Do not attempt repairs if you are not a qualified
professional.
Install and operate the product according to the user manual to
prevent damages or injuries.

Keep the product away from water or moisture to avoid
electrical hazards.

Mounting with Brackets

Follow these steps to mount the charge controller using
brackets:

Identify a suitable location for mounting.
Securely attach the brackets to the mounting surface.

Place the charge controller on the brackets and secure it in
place.
Ensure proper alignment and secure all connections.

Installation

Follow these installation guidelines for the Rover Li Series
MPPT Solar Charge Controller:

Connect the solar panels to the input terminals of the charge
controller.

Connect the battery to the output terminals, observing correct
polarity.
Follow any additional wiring instructions provided in the user
manual.

Power on the charge controller and monitor for proper
operation.

Technical Support

If you encounter any issues or have questions about the product,
contact Renogy’s technical support for assistance.

FAQ

Q: Can I use the Rover Li Series MPPT Solar Charge Controller
with a 12V battery?

A: Yes, the charge controller is compatible with both 12V and
24V batteries.

Q: Is it necessary to ground the charge controller during
installation?

A: Grounding is recommended for safety reasons. Follow the
grounding instructions in the user manual for proper
installation.

Q: What should I do if I encounter a fault code on the
display?

A: Refer to the user manual for information on fault code
meanings and troubleshooting steps. Contact technical support if
needed.

“`

View Fullscreen

Rover Li Series
M PPT Solar Charge Cont roller
12V/ 24V 20 A/ 30 A/ 40 A

VERSION A6

USER M ANUAL

Applicability
The user manual applies to the following products: z Rover Li 12V/24V 20A MPPT Solar Charge Controller (RNG-CTRL-RVR20) z Rover Li 12V/24V 30A MPPT Solar Charge Controller (RNG-CTRL-RVR30) z Rover Li 12V/24V 40A MPPT Solar Charge Controller (RNG-CTRL-RVR40)
Disclaimer
z Renogy ensures the accuracy, sufficiency, and the applicability of information in the user manual at the time of printing due to continual product improvements that may occur.
z Renogy assumes no responsibility or liability for personal and property losses, whether directly and indirectly, caused by the user’s failure to install and use the product in compliance with the user manual.
z Renogy is not responsible or liable for failures, damages, or injuries resulting from repair attempted by unqualified personnel, improper installation and operation.
z The illustrations in the user manual are for demonstration purposes only. Details may appear slightly different depending on product revision and market region.
z Renogy reserves the right to change the information in the user manual without notice. For the latest user manual, visit renogy.com.
Copyright
Rover Li Series MPPT Solar Charge Controller User Manual © 2022 Renogy. All rights reserved. All information in the user manual is subject to copyright and other intellectual property rights of Renogy and its licensors. The user manual may not be modified, reproduced, or copied, in whole or in part, without the prior written permissions of Renogy and its licensors.
Trademark
The following are registered trademarks of Renogy:

RENOGY

The registered trademarks in the user manual are the property of Renogy. The unauthorized use of the trademarks is strictly prohibited.

January 2023, Revision A6

Date and Revision

Table of Contents
Important Safety Information ………………………………………………………………………………………….01 Symbols Used ………………………………………………………………………………………………………….01 General Safety Information ………………………………………………………………………………………..01
Introduction ………………………………………………………………………………………………………………….03 General Information ………………………………………………………………………………………………….03 Key Features ……………………………………………………………………………………………………………03
Charging and Activation Logic ………………………………………………………………………………………..04 MPPT Technology …………………………………………………………………………………………………….04 Four Charging Stages ……………………………………………………………………………………………….05 Lithium Battery Activation …………………………………………………………………………………………..07
Package Contents ………………………………………………………………………………………………………..08 Optional Accessories …………………………………………………………………………………………………….09 Product Overview …………………………………………………………………………………………………………10 Wiring Diagram…………………………………………………………………………………………………………….11 Recommended Cable and Fuse Sizing ……………………………………………………………………………12
Recommended Cable Sizing………………………………………………………………………………………12 Recommended Fuse Sizing ……………………………………………………………………………………….13 Components & Tools …………………………………………………………………………………………………….14 Preparation ………………………………………………………………………………………………………………….15 Inspection ………………………………………………………………………………………………………………..15 Environment …………………………………………………………………………………………………………….15 Placement ……………………………………………………………………………………………………………….16 Checking Battery ………………………………………………………………………………………………………17 Checking Solar Panel………………………………………………………………………………………………..18 Mounting ……………………………………………………………………………………………………………………..20 Wall-mounted …………………………………………………………………………………………………………..20

Mounting with Brackets ……………………………………………………………………………………………..22 Installation …………………………………………………………………………………………………………………..24
Battery Wiring…………………………………………………………………………………………………………..24 Solar Wiring……………………………………………………………………………………………………………..27 Load Wiring (Optional) ………………………………………………………………………………………………30 Temperature Sensor ……………………………………………………………………………………………………..33 Bluetooth Module (Optional)…………………………………………………………………………………………..34 Battery Type ………………………………………………………………………………………………………………..36 Setting the Battery Type …………………………………………………………………………………………….36 Battery Charging Parameters……………………………………………………………………………………..37 User Mode……………………………………………………………………………………………………………….38 System Voltage…………………………………………………………………………………………………………….45 Monitoring ……………………………………………………………………………………………………………………47 Monitoring Menu ………………………………………………………………………………………………………47 Checking Parameters………………………………………………………………………………………………..51 Load Control ………………………………………………………………………………………………………………..52 Turning Load On / Off………………………………………………………………………………………………..52 Switching Load Mode ………………………………………………………………………………………………..52 LED Indicators ……………………………………………………………………………………………………………..55 Solar Panel LED Indicator ………………………………………………………………………………………….55 Battery LED Indicator ………………………………………………………………………………………………..56 Load LED Indicator …………………………………………………………………………………………………..56 System Error LED Indicator ……………………………………………………………………………………….56 Troubleshooting ……………………………………………………………………………………………………………57 Common Faults ………………………………………………………………………………………………………..57 Error Codes ……………………………………………………………………………………………………………..59 Technical Specifications ………………………………………………………………………………………………..62 MPPT Conversion Efficiency ………………………………………………………………………………………….64

Dimensions ………………………………………………………………………………………………………………….65 RNG-CTRL-RVR20 …………………………………………………………………………………………………..65 RNG-CTRL-RVR30 or RNG-CTRL-RVR40 ………………………………………………………………….66
Maintenance ………………………………………………………………………………………………………………..67 Inspection ………………………………………………………………………………………………………………..67 Cleaning ………………………………………………………………………………………………………………….67 Storage ……………………………………………………………………………………………………………………67
Emergency Responses …………………………………………………………………………………………………68 Fire …………………………………………………………………………………………………………………………68 Flooding ………………………………………………………………………………………………………………….68 Smell ………………………………………………………………………………………………………………………68 Noise ………………………………………………………………………………………………………………………68
Technical Support …………………………………………………………………………………………………………69

Important Safety Information

Symbols Used
Important Safety Information

General Safety Information

The user manual provides important installation, operation, and maintenance instructions for
Rover Li Series Solar Charge Controller (hereinafter referred to as charge controller). Read the
user manual carefully before installation and operation and save it for future reference. Failure to observe the instructions or precautions in the user manual can result in electrical shock, serious injury, or death, or can damage the charge controller, potentially rendering it inoperable. The installation and service of the charge controller might require knowledge of electricity and is recommended to be carried out by qualified personnel.

Symbols Used
The following symbols are used throughout the user manual to highlight important information:

Indicates a potentially dangerous condition which could result in WARNING injury or death
Indicates a critical procedure for safe and proper installation and CAUTION operation

NOTE

Indicates an important step or tip for optimal performance

INFO

Indicates that more information is available in other documents relating to the subject

General Safety Information
WARNING
z Do not puncture, drop, crush, penetrate, shake, strike, or step on the charge controller. z Do not open, dismantle, repair, tamper with, or modify the components of the charge
controller. z Install the charge controller on a vertical surface indoors protected from direct sunlight, high
temperature, and water. Make sure there is good ventilation. z Do not immerse the charge controller or its components in water or other fluids. z Keep the charge controller away from heating equipment. z Do not insert foreign objects into the charge controller. z Risk of explosion! Never install the charge controller in a sealed enclosure with flooded
batteries! Do not install in a confined area where battery gases can accumulate. z Confirm the polarities of the devices before connection. A reverse polarity contact will result
in abnormalities. z Refer to Recommended Cable and Fuse Sizing in this user manual, and select the
appropriate cables and fuses according to the usage. z Keep the charge controller out of the reach of children.

Important Safety Information
Symbols Used General Safety Information
z Wear proper protective equipment and use insulated tools during installation and operation. z Do not touch the connector contacts when the charge controller is in operation. z Disconnect all connectors from the charge controller before maintenance or cleaning. z Do not dispose of the charge controller as household waste. Comply with local, state, and
federal laws and regulations and use recycling channels as required. z In the event of fire, use fire extinguishers suitable for electrical equipment. z If the charge controller is installed improperly on a boat, it may cause damage to the
corrosive agents of the boat. Please have the charge controller by a qualified electrician. CAUTION
z Do not expose the charge controller to flammable or harsh chemicals or vapors. z Ensure that there is no water source including downspouts, sprinkles, or faucets above or
near the charge controller. z Ensure that the battery pack is properly connected before installation.
02

Introduction

General Information
Introduction

Key Features

General Information
Rover Li Series MPPT Solar Charge Controller can serve various off-grid solar systems. With the adoption of intelligent MPPT (Maximum Power Point Tracking) algorithm, the charge controller can maximize the energy from the solar panel to charge the battery in a more efficient way. At the same time, it monitors the status of the battery in real time and prevents the battery from overcharge and overdischarge, thus extending the battery life and improving the performance of the system.
Rover Li Series MPPT Solar Charge Controller provides intelligent self-diagnosis and multiple input protecion mechanisms, which can prevent damage caused by installation errors or system failures.

Key Features
z Auto Battery Voltage Detection
The charge controller detects 12V or 24V DC system voltages for non-lithium batteries and programmability for lithium batteries. z MPPT Technology
The charge controller supports advanced MPPT technology with tracking efficiency up to 99% and peak conversion efficiency of 98%. z High Battery Compatibility
The charge controller is compatible with AGM, SLD, flooded, gel, lithium, and user-defined batteries. z Full System Protection
The full system protection is meant to safeguard your system, and the self-diagnostic capability can assess and protect against reverse polarity, battery overcharging, battery overdischarging, overload, short-circuiting, and reverse current. z Multiple Input Protection Features
The charge controller offers reverse polarity protection, overvoltage protection, short circuit protection, and reverse charging protection at night for solar panels. z Diverse Load Control
You can connect DC appliances directly to the optional Load Terminals and monitor consumption or set up timer controls directly from the charge controller.

Charging and Activation Logic

MPPT Technology
Charging and Activation Logic

Four Charging Stages

Lithium Battery Activation

MPPT Technology
Based on MPPT technology, the charge controller can extract maximum power from the solar panel. With an automatic tracking algorithm, the MPPT technology can track the voltage of the maximum power point that changes with weather conditions, ensuring the harvest of the maximum power throughout the day. Current Boost
Generally, the charge controller will “boost” the current in the solar system. The power generated in the solar panel is the same as the power delivered to the battery pack. Power is the product of voltage (V) x amperage (A). Therefore, assuming 100% efficiency:

Power In = Power Out Volts In * Amps In = Volts Out * Amps Out

The efficiency of the charge controller is about 95%. As the maximum power point voltage of the solar system is greater than the battery pack voltage, the potential difference is proportional to the current boost. The voltage of the solar panel needs to be stepped down to a rate at which the battery can be charged in a stable manner. Compared with traditional charge controllers, the charge controller does not waste the stepped down voltage. It is entirely possible to have the solar module input 8 amps of current into the charge controller, and have the charge controller
output 10 amps of current to the battery pack. The following shows a graphic point about the output of MPPT technology.

Current vs.Voltage (12V System)

Output Power (12V System)

Typical Battery Maximum Voltage Range Power Point

Traditional Controller Operating Range

Maximum Power Point

Current Power

10 15 17 Voltage

Limiting Effectiveness
High temperature is the natural enemy of solar panels. With the increase of ambient temperature, the operating voltage (Vmp) of the solar panel decreases, which limits the power generation of the solar panel. The charge controller encounters an inevitably decrease in charging performance even with the MPPT technology. In this case, it is better to use solar panels with higher nominal voltage, so that the battery can still get current boost even if the voltage drops proportionally.

Charging and Activation Logic
MPPT Technology Four Charging Stages Lithium Battery Activation

Four Charging Stages

Rover Li Series MPPT Solar Charge Controller has a four-stage battery charging algorithm for a rapid, efficient, and safe battery charging. The stages include: Bulk Charging, Boost Charging, Float Charging, and Equalization.

Battery Voltage
Equalization charging voltage

Fast charging Constant voltage charging

C
Float charging

Boost charging voltage

Float charging voltage Charging return voltage

Charging Current

Maximum current

Constant pressure time: 2hr (Range:10-600 min)
Cumulative Time: 2hr

Time

Time
Bulk Charging: This algorithm is used for day to day charging. It uses 100% of available solar power to recharge the battery and is equivalent to constant current. In this stage the battery voltage has not yet reached constant voltage (equalization or boost), the charge controller operates in constant current mode, delivering its maximum current to the batteries (MPPT Charging). Constant Charging: When the battery reaches the constant voltage set point, the charge controller will start to operate in constant charging mode, where it is no longer MPPT charging. The current will drop gradually. The charge stages (equalization and boost) are not carried out constantly in a full charge process to avoid too much gas precipitation or overheating of the battery. Boost Charging: Boost stage maintains a charge for 2 hours by default. The user can adjust
the constant time and preset value of boost per their demand. Float Charging: After the constant voltage stage, the charge controller will reduce the battery voltage to a float voltage set point. Once the battery is fully charged, there will be no more chemical reactions
05

Charging and Activation Logic
MPPT Technology Four Charging Stages Lithium Battery Activation
and all the charge current would turn into heat or gas. Because of this, the charge controller will reduce the voltage charge to smaller quantity, while lightly charging the battery. The purpose for this is to offset the power consumption while maintaining a full battery storage capacity. In the event that a load drawn from the battery exceeds the charge current, the charge controller will no longer be able to maintain the battery to a Float set point and the charge controller will end the float charging stage and refer back to bulk charging. Equalization: Equalization is carried out every 30 days of the month. It is intentional overcharging of the battery for a controlled period of time. The charge controller charges the battery at a level higher than the voltage that it is typically charged to remove sulfate crystals that build up on the plates over time and balance the voltage of each cell. Periodic equalization charging is beneficial to certain types of batteries because it helps ensure the battery capacity and maintain its runtime.
CAUTION z It is recommended to use only non-sealed, vented, flooded, and wet cell lead acid batteries
in the equalization stage. z Do not equalize VRLA type AGM, gel, and lithium cell batteries unless permitted by battery
manufacturer.
WARNING z Once equalization is active in the battery charging, the charge controller will not exit this
stage unless there is an insufficient source of charging current from the solar panel. There should be NO load on the batteries when in equalization charging. z Overcharging and excessive gas precipitation may damage the battery plates and activate material shedding on them. Too high of an equalization charging or too long of one may cause damage. Review the specific requirements of the battery used in the system carefully. z Equalization may increase battery voltage to a level that damages to sensitive DC loads. Ensure that allowable input voltages of all loads are greater than the set voltage during equalization charging.
06

Charging and Activation Logic
MPPT Technology Four Charging Stages Lithium Battery Activation

Lithium Battery Activation

The charge controller can activate sleeping lithium batteries in most cases. Lithium batteries need to be activated when the built-in battery protection is breached, which is usually when lithium batteries are overdischarged. To awaken lithium batteries, the controller will provide a constant voltage and after successful activation, can continue charging like normal.

During activation, the LCD will display

. If

diaplays for more than 2 days, it means the

charge controller needs to undergo further troubleshooting. Read Troubleshooting in the user

manual.

12V

24V

NOTE
z After connecting the charge controller with the lithium battery, set the battery type and the system voltage. For more instructions, read Setting the Battery Type and System Voltage of the user manual.
Operation Conditions
1. Set the battery type of the charge controller to Li. Set the correct nominal voltage of the lithium battery manually.
2. For 12V lithium batteries, the incoming solar voltage should be greater than or equal to 16V DC and for 24V lithium batteries, the incoming solar voltage should be greater than or equal to 30V DC.
Working Logic
1. In lithium battery mode, the charge controller automatically enables the activation function and provides a constant voltage of over 13.2V to activate the lithium battery.
2. After the charge controller activates the lithium battery with a constant voltage of 13.2V for 10s, the charge controller will pause for 5s and detect the battery voltage.
If the battery voltage is greater or equal to 11V, the charge controller will exit the lithium battery activation mode.
If the battery voltage is less than 11V, the charge controller will continue to activate the lithium battery.

Package Contents
Package Contents
Rover Li Series MPPT Solar Charge Controller × 1
Renogy Temperature Sensor × 1 (Model: RTSCC)

User Manual × 1

Rover Li Series
M PPT Solar Charge Cont roller
12V/ 24V 20 A/ 30 A/ 40 A

VERSION A6

USER M ANUAL
Mounting Bracket × 4

Mounting Bracket Screws × 4

Optional Accessories
Optional Accessories
NOTE z You can buy the following optional accessories from renogy.com.
Battery Fuse RNG-CTRL-RVR20: 25A to 30A RNG-CTRL-RVR30: 30A to 40A RNG-CTRL-RVR40: 40A to 50A The battery fuse protects the charge controller, cables and batteries from overcurrent.
Solar Panel Fuse Solar panel fuse provides single circuit protection for solar panels, preventing damage caused by high currents.
Fuse Cable The cable is integrated with copper rings at both ends, enabling the charge controller to be connected with an external fuse.
Renogy BT-1 Bluetooth Module (sold separately) Pair the Bluetooth Module with Renogy DC Home app to monitor and change parameters through a smartphone or tablet. Download the app by scanning the QR Code on the last page of the user manual.
09

POWER LINK
1
Bluetooth Module

Product Overview
Product Overview
1 2 3 4 56789

Temp.
PV+ PVBAT+ BATLOAD+ LOAD- RS232

10 11 12 13 14 15 16 17

No.

Part & Description

No.

Part & Description

1 Return to the Previous Menu

10 Temperature Sensor Port

2 Page Down / Decrease Parameter Value 11 Positive Solar Terminal (PV+)

3 Page Up / Increase Parameter Value 12 Negative Solar Terminal (PV-)

Enter Sub Menu / Save Parameter 4 Value / Turn Load On or Off in Manual
Mode

13 Positive Battery Terminal (BAT+)

5 LCD

14 Negative Battery Terminal (BAT-)

6 System Error LED Indicator

15 Positive DC Load Terminal (LOAD+)

7 Load LED Indicator

16 Negative DC Load Terminal (LOAD-)

8 Battery LED Indicator

17 RS232 Port (optional)

9 Solar LED Indicator

18 Mounting Holes

Wiring Diagram
Wiring Diagram

Solar Panel Fuse

Battery Fuse

+ +

–

Solar Panel

Battery

DC Load

Positive Negative

Recommended Cable and Fuse Sizing

Recommended Cable Sizing
Recommended Cable and Fuse Sizing

Recommended Fuse Sizing

Recommended Cable Sizing

Model

Rated Current

Cable

Rover Li 12V/24V 20A MPPT Solar Charge
Controller (RNG-CTRL-RVR 20)

Solar (input)
20A
Battery (output)

Rover Li 12V/24V 30A MPPT Solar Charge
Controller (RNG-CTRL-RVR 30)

Solar (input)
30A
Battery (output)

Rover Li 12V/24V 40A MPPT Solar Charge
Controller (RNG-CTRL-RVR 40)

Solar (input)
40A
Battery (output)

Cable Length (ft) / (m)
010 ft (03 m) 1120 ft (36 m) 2130 ft (69 m) 010 ft (03 m) 1120 ft (36 m) 2130 ft (69 m) 010 ft (03 m) 1120 ft (36 m) 2130 ft (69 m) 010 ft (03 m) 1120 ft (36 m) 2130 ft (69 m) 010 ft (03 m) 1120 ft (36 m) 2130 ft (69 m) 010 ft (03 m) 1120 ft (36 m) 2130 ft (69 m)

Recommended Cable Size 12 AWG 10 AWG 8 AWG 12 AWG 10 AWG 8 AWG 10 AWG
8 AWG to 10 AWG 8 AWG 10 AWG
8 AWG to 10 AWG 8 AWG 8 AWG
6 AWG to 8 AWG 6 AWG 8 AWG
6 AWG to 8 AWG 6 AWG

NOTE
z The cable specifications listed above account for critical, less than 3% voltage drop and may not account for all configurations.
z The size of the fuse cable is consistent with that of the corresponding cable connecting to the output terminal of the charge controller.

Recommended Cable and Fuse Sizing
Recommended Cable Sizing Recommended Fuse Sizing

Recommended Fuse Sizing
For your safety, it is recommended to install fuses at both the input and output ends of the charge controller to ensure safe operations.
NOTE z Choose appropriate fuses according to the specifications of the solar panel and the charge
controller.
Fuse from Solar Panel to Charge Controller

Max. Current of Solar Panel to Solar Controller Fuse = Total Amps of Solar Panel (Array) * 1.56

Solar Panels in Series
Total Amps I: I1=I2=I3 Fuse = I1 * 1.56

Solar Panels in Parallel
Total Amps I: I1+I2+I3 Fuse = (I1+I2+I3) * 1.56

NOTE
z In the formula, I represents the maximum output current of the solar panel, and 1, 2 or 3 represents the solar panel number, respectively.
INFO
z Read the user manual of the solar panel to obtain working voltage parameters, and calculate the corresponding fuse current according to the formula.

Components & Tools

NOTE
z The adapter cable used in this manual can be made by yourself or purchased from renogy. com according to the names in Recommended Components.
Recommended Components

Battery

Battery Adapter
Cable (Ring Terminal Adapter Cable)

Solar Panel

Solar Panel Extension Cables

+
–

3 4 5 6

Required Tools Phillips Screwdriver (#2)

10mm

Wrench (10 mm)
10 mm

10mm

Measuring Tape

Insulation Tape

Wrench (14 mm) 14 mm

14mm

Self-tapping Bolts

5.2 mm RVR-20: 0.2 inch

RVR-30/40:

4.5 mm 0.17 inch

9 mm RVR-20: 0.35 inch

RVR-30/40:

10 mm 0.39 inch

Preparation

Inspection
Preparation

Environment

Placement

Checking Battery

Checking Solar Panel

Inspection
1. Inspect the charge controller for any visible damage including cracks, dents, deformation, and other visible abnormalities. All connector contacts shall be clean, dry, and free of dirt and corrosion.

WARNING z Do not use the charge controller if it has any visible damage.
Environment
Install the charge controller indoors and prevent its components from being exposed to direct sunlight. Prevent water from entering the charge controller. Make sure there is good ventilation.
Make sure that the charge controller is installed with ambient temperature range from -4°F to 140°F or -20°C to 60°C. To ensure optimal working efficiency, it is recommended to keep the ambient temperature range from -4°F to 113°F or -20°C to 45°C. Make sure that the charge controller is installed in an environment with relative humidity between 0% and 95% and no condensation.
NOTE z Install the charge controller as close to the battery as possible to avoid voltage drops due to
long cables.
WARNING z Risk of explosion! Never install the charge controller in a sealed enclosure with flooded
batteries!

Preparation
Inspection Environment Placement Checking Battery

Checking Solar Panel

Placement
The charge controller can be fixed vertically (terminals facing down) to a wall or horizontally to the floor.

Temp. PV+ PVBAT+ BATLOAD+ LOAD- RS232
6 in / 150 mm

Temp. PV+ PVBAT+ BATLOAD+ LOAD- RS232
1. Ensure that there is enough space to install the cable. The charge controller requires at least 6 inches (150 mm) of clearance above and below for proper air flow. Ventilation is highly recommended if it is mounted in an enclosure.

6 in / 150 mm

2. Measure the length of the cables connecting to the battery

–

and the solar panel to make sure that they can be connected

to the charge controller.

Preparation
Inspection Environment Placement Checking Battery

Checking Solar Panel

NOTE
z If the Battery Adapter Cable or Solar Panel Extension Cable is not long enough, you can use more extension cables or reselect the installation site.
z Read the Recommended Cable and Fuse Sizing in this manual, and select appropriate cables according to the usage.

+
–

Checking Battery
1. Inspect the battery for any visible damage including cracks, dents, deformation, and other visible abnormalities. All connector contacts shall be clean, dry, and free of dirt and corrosion.

INFO z Read the user manual of the battery carefully before installation.
NOTE z Make sure the battery is working normally. z The charge controller can only be applied to deep-cycle gel, flooded, SLD, AGM and Li
batteries. z Be sure to wear protective goggles. If getting electrolyte in your eyes, flush your eyes with
clean water immediately.
CAUTION z Do not dispose of batteries as household waste. Comply with local, state, and federal laws
and regulations and use recycling channels as required.
WARNING z Do not use the battery if it has any visible damage. z Do not touch the exposed electrolyte or powder if the battery housing is damaged. z The battery may produce explosive gases when being charged. Make sure there is good
ventilation.
17

Preparation
Inspection Environment Placement Checking Battery

Checking Solar Panel

System Voltage

Battery or Battery Pack System Voltage = System Voltage U

Batteries in Series

Batteries in Parallel

System Voltage U: U1+U2+U3 System Voltage U: U1=U2=U3

2. Combine the batteries in parallel or series as needed. This charge controller supports a maximum system voltage of 32V. Read the user manual for battery voltage parameters, and calculate the voltage of the battery or battery pack system according to the formula to ensure that it does not exceed 32V.

NOTE
z In the formula, U represents the battery voltage, and 1, 2 or 3 represents the battery number respectively.

WARNING
z Do not use the charge controller if the battery or battery pack system voltage exceeds 32V. Doing so will cause damage to the charge controller.

Checking Solar Panel
1. Inspect the solar panel for any visible damage including cracks, dents, deformation, and other visible abnormalities. All connector contacts shall be clean, dry, and free of dirt and corrosion.

INFO z Read the user manual of the solar panel carefully before installation.
NOTE z The solar panels can be combined in parallel or in series as needed. z Identify the polarities (positive and negative) on the cables used for solar panels. A reverse
polarity contact may damage the charge controller.
18

Preparation
Inspection Environment Placement Checking Battery

Checking Solar Panel

WARNING z Do not use the solar panel if it has any visible damage.

Maximum Output Power

Maximum Output Power of Solar Panel or Solar Panel Array = Maximum Solar Input Power W

Solar Panels in Series

Solar Panels in Parallel

Maximum Output Power W: Maximum Output Power W:

W1+W2+W3

2. Read the user manual of the solar panel, and calculate the maximum output power of the solar panel or the solar panel array according to the formula.

NOTE
z In the formula, W represents the maximum output power of the solar panel, and 1, 2 or 3 represents the solar panel number, respectively.

Model

RNG-CTRL-RVR 20 RNG-CTRL-RVR 30 RNG-CTRL-RVR 40

Rated Solar Input Power

12V @ 260W 24V @ 520W

12V @ 400W 24V @ 800W

12V @ 520W 24V @ 1040W

Working Voltage

Working Voltage of Solar Panel or Solar Panel Array = Working voltage U

Solar Panels in Series

Solar Panels in Parallel

Working Voltage U: U1+U2+U3 Working Voltage U: U1=U2=U3

3. Read the user manual of the solar panel, and calculate the working voltage of the solar panel or the solar panel array according to the formula.

NOTE
z In the formula, U represents the working voltage of the solar panel, and 1, 2 or 3 represents the solar panel number, respectively.
WARNING z Ensure that the working voltage of the solar panel or the solar panel array does not exceed
100V.

Mounting

Wall-mounted
Mounting

Mounting with Brackets

The charge controller can be mounted on a vertical surface with mounting holes or provided brackets.

NOTE z Make sure that the charge controller is installed firmly to prevent it from falling off.

Wall-mounted
Required Tools Installation Template (Letter Size)

Marker Pen

238 mm 9.38 in

172 mm 6.78 in

1. Mark the four mounting holes on a piece of paper.

2. Tape the paper to the desired location for installation.

Mounting

Wall-mounted

Mounting with Brackets

3. Install the screws according to the mounting holes marked on the paper. Do not overtighten the bolt.

NOTE
z Choose appropriate screws according to the mounting holes of the charge controller, and leave some gap between the screw and the surface. 4. Tear off the paper.

5. Hang the charge controller onto the wall and verify all screw heads are in the mounting holes.

Mounting

Wall-mounted

Mounting with Brackets

6. Release the charge controller and slide it down into place. Tighten the screws.

7. If the screws are not secure, tighten them clockwise with a suitable wrench.

NOTE z If the gap between the charge controller and the mounting surface is too large and the
screws cannot be tightened with a wrench, remove the charge controller and adjust the screws. Ensure that there is no gap between the charge controller and the surface.
Mounting with Brackets
1. Secure the Mounting Brackets on the mounting holes of the charge controller with the Mounting Bracket Screws.

Mounting

Wall-mounted

Mounting with Brackets

2. Place the charge controller against a flat surface and secure it with screws.

NOTE z Choose appropriate screws according to the mounting holes of the charge controller.

Installation

Battery Wiring
Installation

Solar Wiring

Load Wiring (Optional)
Battery Wiring
1. Rotate the cable retainer of the BAT-, and BAT+ terminals counterclockwise with a screwdriver.

Temp.
PV+ PVBAT+ BATLOAD+ LOAD- RS232

RS232

Temp.

PV+

PV-

BAT+

BAT-

LOAD+

LOAD-

2. Make sure the cable retainer is completely open.

Open

3. Insert the bare ends of the Battery Adapter Cables into the corresponding BAT+ and BAT-.

Temp. PV+ PVBAT+

BAT-

LOAD+

LOAD-

RS232

NOTE
z Strip off some of the protective sheath of cables and insert the bare ends of the cables into the screw terminals.

Installation

Battery Wiring

Solar Wiring

Load Wiring (Optional)

Temp. PV+ PVBAT+

BAT-

LOAD+

LOAD-

RS232

Temp. PV+ PVBAT+

BAT-

LOAD+

LOAD-

RS232

4. Rotate the screws clockwise to clamp the wire down and close the cable retainer.

NOTE
z The torque of the cable retainer is 1.2 N·m (10.53 lb-inch). Do not overtighten the cable retainer screws. Otherwise it will lead to stripped screws or screw bending.
5. Make sure all connections are tight and secure.

Temp. PV+ PVBAT+

BAT-

LOAD+

LOAD-

RS232

BAT-

– 12

–
+

6. Attach the Battery Adapter Cable connecting to the BAT- of the charge controller to the negative terminal of the battery, and tighten the bolt with a wrench.

NOTE
z Select a suitable wrench according to the specifications of the positive and negative wire fixing bolts of the battery.
z Make sure all connections are tight and secure.
WARNING z Identify the polarities (positive and negative) on the cables used for the batteries. A reverse
polarity contact may damage the charge controller.
25

Installation

Battery Wiring

Solar Wiring

Load Wiring (Optional)

BAT+

+
+
–

7. For your safety, it is recommended to use a battery fuse. Connect the Battery Adapter Cable connecting to the BAT+ to one end of the battery fuse, and then connect the other end to the fuse cable.
8. Attach the Battery Adapter Cable connecting to the BAT+ of the charge controller to the positive terminal of the battery, and tighten the bolt with a wrench.

9. Once the tray cables are connected to the battery, the LCD and the Battery LED Indicator will light up, and the charge controller enters nighttime mode.

Installation

Battery Wiring

Solar Wiring

Load Wiring (Optional)

Solar Wiring
1. Rotate the cable retainer of the PV-, and PV+ terminals counterclockwise with a screwdriver.

Temp.
PV+ PVBAT+ BATLOAD+ LOAD- RS232

RS232

Temp.

PV+

PV-

BAT+

BAT-

LOAD+

LOAD-

2. Make sure the terminal hatch is completely open.

Open

3. Insert the bare ends of the Solar Panel Extension Cables into the corresponding PV+ and PV-.

Temp. PV+ PVBAT+

BAT-

LOAD+

LOAD-

RS232

NOTE
z Strip off some of the protective sheath of cables and insert the bare ends of the cables into the screw terminals.
z Connect the male connector of the Solar Panel Extension Cable to the PV- and the female connector to the PV+.

Installation

Battery Wiring

Solar Wiring

Load Wiring (Optional)

4. Rotate the screws clockwise to clamp the wire down and close the cable retainer.

Temp. PV+ PVBAT+

BAT-

LOAD+

LOAD-

RS232

Temp. PV+ PVBAT+

BAT-

LOAD+

LOAD-

RS232

NOTE z The torque of the cable retainer is 1.2 N·m (10.53 lb-inch). Do not overtighten the cable
retainer screws. Otherwise it will lead to stripped screws or screw bending.
5. Make sure all connections are tight and secure.

Temp. PV+ PVBAT+

BAT-

LOAD+

LOAD-

RS232

6. Connect the Solar Panel Extension Cable connecting to PV-

–

of the charge controller to the negative terminal of the solar

panel.

PV-

NOTE z Make sure all connections are tight and secure.
28

Installation

Battery Wiring

Solar Wiringr

Load Wiring (Optional)

+
PV+

7. For your safety, it is recommended to use a battery fuse and a solar panel fuse. Connect the Solar Panel Extension Cable connecting to the PV+ to one end of the solar panel fuse, and then connect the other end of the fuse to the positive terminal of the solar panel.

NOTE
z Read the Recommended Cable and Fuse Sizing in this manual, and select appropriate solar panel fuses according to the usage.
z Remove the cover of the solar panels or place them face up after connection.
8. Once the Solar Panel Extension Cables are connected to the solar panels, the Solar LED Indicator will light up, and the charge controller enters daytime mode.

The charge controller needs troubleshooting if any of the following errors occur: z The LCD does not light up. z The battery voltage is not displayed on the LCD. z The Battery LED Indicator or the Solar LED Indicator does not light up.
Read Troubleshooting in the user manual. For more instructions, contact our customer service through renogy.com/contact-us/.

Installation

Battery Wiring

Solar Wiring

Load Wiring (Optional)

Load Wiring (Optional)
You can choose to connect the charge controller to a DC load (20A) on demand. Recommended Accessories
Bare Wire

NOTE
z DC load operating current needs to be less than or equal to 20A. z Select appropriate cables based on the DC load operating current. z The DC load is powered by batteries, so ensure that the DC load is compatible with
the battery voltage. If a 12V DC load is installed in a 24V battery system, the incorrect connection will damage the charge controller and void the warranty.
1. Rotate the cable retainer of the LOAD-, and LOAD+ terminals counterclockwise with a screwdriver.

Temp.
PV+ PVBAT+ BATLOAD+ LOAD- RS232

RS232

Temp.

PV+

PV-

BAT+

BAT-

LOAD+

LOAD-

2. Make sure the cable retainer is completely open.

Open

Installation

Battery Wiring

Solar Wiring

Load Wiring (Optional)

3. Insert the bare ends of the cables into both LOAD- and LOAD+ terminals.

Temp. PV+ PVBAT+

BAT-

LOAD+

LOAD-

RS232

NOTE
z Strip some insulation off bare wires according to the depth of the installation hole.
4. Rotate the screws clockwise to clamp the wire down and close the cable retainer.

Temp. PV+ PV-

BAT+ BAT-

LOAD+

LOAD-

RS232

Temp. PV+ PVBAT+

BAT-

LOAD+

LOAD-

RS232

Installation

Battery Wiring

Solar Wiring

Load Wiring (Optional)

DC Load

LOAD+ LOAD-

6. Connect the cable at the LOAD- terminal to the negative terminal of the load and connect the cable at the LOAD+ terminal to the positive terminal of the load.

Temperature Sensor

The temperature sensor can detect the temperature of the battery and send the temperature to the charge controller for charging voltage calibration, ensuring that the charge controller (with operating temperature ranging from -35°C to 45°C or -31°F to 113°F) can charge the battery normally.

CAUTION

z Do not use the temperature sensor on a LiFePO4 (LFP) battery which comes with a battery management system (BMS).

1. Insert the green connector of the Temperature Sensor to the

Temp.

Temperature Sensor Port of the charge controller.

Temp. PV+ PVBAT+

BAT-

LOAD+

LOAD-

RS232

+
–

2. Adhere the sensor on the top or side of the battery with the insulation tape.

Bluetooth Module (Optional)

Bluetooth Module (Optional)
With a Renogy BT-1 Bluetooth Module, the charge controller can be connected to the DC Home app for remote device monitoring. You can monitor and modify parameters of the charge controller through the DC Home app.
INFO z Read the user manual of the Renogy BT-1 Bluetooth Module carefully before connection.

NOTE

z Make sure that the charge controller is turned on before the connection.

z Scan the QR code on the last page of the uesr manual to download the DC Home app.

Load LOAD- RS232

1. Connect the Bluetooth Module to the RS232 port on the charge controller.

Temp. PV+ PVBAT+

BAT-

LOAD+

LOAD-

RS232

2. Place the Bluetooth module in a suitable site.

My Renogy

25%

No device yet… 1

Device

Community

Personal

3. Open the DC Home app. Tap + to search for new devices.
34

Bluetooth Module (Optional)

My Renogy
25%

Device Battery
RBT12400LFPL-…
25 % 0A

Controller
RCC60RVRU A
0W 0

Device

Scene

Community

HUB Mode

Add Devices RCC60RVRU

Cancel

Confirm

4. Tap Confirm to add the newly found charge
controller to the device list.

5. Tap the charge controller to check paraneters of the charge controller. To modify parameters, see User Mode in the user manual.

Battery Type

Setting the Battery Type
Battery Type

Battery Charging Parameters

User Mode

Setting the Battery Type
Set the battery type immediately after installing the charge controller. If the charge controller has been connected to a Renogy BT-1 Bluetooth Module, you can also set the battery type from the DC Home app. For more details, see User Mode in this manual.

WARNING
z Refer to technical specifications of the battery provided by the manufacturer when choosing a preset battery. Incorrect battery type selection resulting in damage will not be covered by warranty.

NOTE

z To cancel the setting and exit, press

1. Press and hold

on the charge controller for about 3

seconds unti is lit up and the battery type icon starts flashing.

3s 2. Press or to select the desired battery type.

3. After the battery type has been selected, press and hold for about 3 seconds to save the settings.
3s
36

Battery Type
Setting the Battery Type Battery Charging Parameters

User Mode

Battery Charging Parameters
If your battery is not compatible with the preset charging configuration of the charge controller, enter the user mode to program battery parameters. If the charge controller has been connected to a Renogy BT-1 Bluetooth Module, you can also program battery parameters through the DC Home app. For more instructions, read the User Mode in this manual.

WARNING
z Before modifying battery parameters, check the table below first. Incorrect parameter setting will damage the charge controller and void the warranty.

Battery Type Parameters

AGM / SLD

Overvoltage Shutdown

16.0V

Equalization Volatge

—

Gel Flooded Li (LFP) User Mode

16.0V 16.0V 16.0V* [16.0V]

14.6V 14.8V

—

14.4V

User Recommended
—
9.0-17.0V

Boost Voltage 14.2V 14.4V 14.6V 14.4V*

14.4V

9.0-17.0V

Float Voltage 13.8V 13.8V 13.8V

Boost Return Voltage
Undervoltage Warning
Undervoltage Return

13.2V 12.0V 12.2V

Low Voltage Disconnect

11.0V

Low Voltage Reconnect

12.6V

Equalization Duration

—

2 hours 2 hours

Boost Duration

2 hours 2 hours 2 hours

— 13.2V 12.0V 12.2V 11.0V 12.6V
— —

14.4V [13.2V] [12.0V] [12.2V] [11.1V] [12.6V] [0-300 min] 0-300 min

9.0-17.0V — —
9.0-17.0V 9.0-17.0V 9.0-17.0V
— 10-300 min

NOTE
z The parameters listed in the table above apply to 12V batteries. For the 24V batteries, double the number of the parameters.
z Parameters in square brackets ([ ]) are automatically adjusted according to the relevant settings, and cannot be set directly.
37

Battery Type
Setting the Battery Type Battery Charging Parameters

User Mode

z * By default, Boost Voltage and Overvoltage Shutdown values are set to 14.4V and 16.0V respectively for lithium batteries. Manual modification on Boost Voltage for lithium batteries may trigger Overvoltage Shutdown alarms. Therefore, the Rover Li charge controller automatically sets the Overvoltage Shutdown parameter to a value of Boost Voltage plus 2 to ensure normal battery charging.
z For the default values of User Mode, refer to the DC Home App.
User Mode

WARNING
z Before modifying battery parameters in user mode, check the table below and consult the battery manufacturer to check whether modification is allowed. Incorrect parameter setting will damage the charge controller and void the warranty.

Parameters

Description

Rover Li 12V/24V 20A MPPT Solar Charge Controller (RNG-CTRL-RVR20)

Model

Rover Li 12V/24V 30A MPPT Solar Charge Controller (RNG-CTRL-RVR30)

Rover Li 12V/24V 40A MPPT Solar Charge Controller (RNG-CTRL-RVR40)

The default protection voltage is 16V. Improper setting may affect Overvoltage Shutdown safe use of the battery. Please consult the battery manufacturer
and check if this voltage value needs to be modified.

Boost Voltage

This value affects whether the battery can be fully charged. Please consult the battery manufacturer and set the value properly.

Float Voltage Equalization Voltage

This value affects whether the battery can be fully charged. Please consult the battery manufacturer and set the value properly.
1. For lead-acid batteries, please consult your battery manufacturer to obtain the voltage value and then complete the settings according to the feedback.
2. If no equalization is required, set it to the same voltage as Boost.

Undervoltage Warning Low Voltage Shutdown Low Voltage Reconnect

This voltage value affects the life of the battery. Consult the battery manufacturer and check if this voltage value needs to be set.

Battery Type
Setting the Battery Type Battery Charging Parameters

User Mode

Parameters Boost Duration Equalization Duration Equalization Interval

Description
Please consult the battery manufacturer if it is necessary to set these values.

Setting via the Charge Controller

NOTE

z To cancel the setting and exit, press

1. Press and hold

on the charge controller for about 3

seconds until is lit up and the battery type icon starts flashing.

3s 2. Press or to select

3. Press to set the system voltage.

Battery Type
Setting the Battery Type Battery Charging Parameters

User Mode

4. Press or to select 12V or 24V system voltage according to the usage.

5. Press

to set the equalization voltage.

V
EQUATIZE

6. Press or to adjust the equalization voltage according to the usage.
V
EQUATIZE

CAUTION z Overcharging and excessive gas precipitation may damage the battery plates and activate
material shedding on them. Too high of an equalization charging voltage or too long of equalization charging may damage the battery. Review the specific requirements of the battery used in the system carefully. z It is recommended to use only non-sealed, vented, flooded, and wet cell lead acid batteries in the equalization stage. z Do not equalize VRLA type AGM, gel, and lithium cell batteries unless permitted by battery manufacturers. z If no equalization is required, set it to the same voltage as Boost.
40

Battery Type
Setting the Battery Type Battery Charging Parameters

User Mode

7. Press

to set the boost voltage.

BOOST

8. Press or the usage.

to adjust the boost voltage according to

BOOST

9. Press

to set the float voltage.

V
FLOAT

10. Press or usage.

adjust the float voltage according to the

V
FLOAT

Battery Type
Setting the Battery Type Battery Charging Parameters

User Mode

11. Press to set the overdischarge return voltage.

12. Press or adjust the overdischarge return voltage according to the usage.
V

13. Press to set the overdischarge voltage.
V

14. Press or to adjust the overdischarge voltage according to the usage.
V

Battery Type
Setting the Battery Type Battery Charging Parameters

User Mode

15. After the settings are completed, press and hold for about 3 seconds to save the settings.

Setting via the DC Home app
If the charge controller has been connected to a Renogy BT-1 Bluetooth Module, add the charge controller to the DC Home app first. For more instructions, see the Bluetooth Module (Optional) in the user manual.

NOTE

z Make sure the Bluetooth of your phone is turned on.

z Make sure the Renogy BT-1 Bluetooth Module is powered on.

z Illustrations of the DC Home app in this user manual are for reference only. Follow the instructions based on the current app version.

My Renogy

1. Tap the charge controller to enter the device details interface.

25%

Device Battery
RBT12400LFPL-…
25 % 0A

Controller
RCC60RVRU BT-TH-66EA3932
A 0W 0

Device

Scene

Community

RCC60RVRU BT-TH-66EA3932

RCC60RVRU

2. Tap ··· in the upper-right corner.

NOT CHARGING

PV Screen

History

Solar Volts

Solar Amps

Total Energy Produced

PV Watts

0 V

0 A

0.052 kwh 0 W

Battery Charging Volts Battery Charging Amps Battery Type Sealed

13.2 V 0 A
Battery Temperature 77 oC o F

Battery Type
Setting the Battery Type Battery Charging Parameters

User Mode

RCC60RVRU
Settings i About

NOT CHARGING

PV Screen

History

Solar Volts

Solar Amps

Total Energy Produced

PV Watts

0 V

0 A

0.052 kwh 0 W

Battery Charging Volts Battery Charging Amps Battery Type Sealed

13.2 V 0 A
Battery Temperature 77 oC o F

Settings

3. Tap Settings to enter the mode selection interface.

RCC60RVRU

General Parameters System Voltage(v) Battery Type

12V Sealed

Advanced Parameters

Equalization Voltage (9.0~17.0)

0 v

Boost Voltage (9.0~17.0)

14.6 v

Float Voltage (9.0~17.0)

13.8 v

Low Voltage Reconnect (9.0~17.0) 12.6 v

Low Voltage Warning (9.0~17.0)

12 v

Low Voltage Disconnect (9.0~17.0) 11.1 v

Boost Duration

120 min

4. In this interface, you can customize multiple parameters of the battery. When the parameters are modified, Setting Success appears on the interface, indicating that the
parameter setting is completed.

System Voltage

The charge controller is simple and easy to use. For common AGM, SLD, gel, and flooded batteries, the charge controller can automatically identify the 12V/24V system voltage.
For the lithium battery, set the system voltage manually.

NOTE

z To cancel the setting and exit, press

1. Press and hold

in the main interface for about 3

seconds until is lit up and the battery type icon starts

flashing.

3s 2. Press or to select .

3. Press to set the system voltage.

System Voltage

4. Press or to select 12V or 24V system voltage according to the usage.

5. After the settings are completed, press and hold for about 3 seconds to save the settings.
3s

Monitoring

Monitoring Menu
Monitoring

Checking Parameters

The charge controller is equipped with a LCD and 4 buttons. You can check the status of the charge controller and set parameters with the buttons.

Charging Solar Panel
Daytime Nighttime
Charging Stage
System Voltage Settings
Serial Port
Icon

Monitoring Menu

Battery Discharging
Load

MPPT BOOST FLOAT EQUATIZE

12V 24V

COM

Parameter

VC
kWAh
USE FLD GEL SLD Li

Parameter Value Unit Battery Type

Abnormality Bluetooth

Description

Daytime Mode

The voltage of the solar panel is greater than or equal to 10V.

Nighttime Mode The voltage of the solar panel is less than 10V.

Charging

· Dynamic: The charge controller is charging the

(The arrow between battery.

the solar panel and · Static: The charge controller is not charging the

the battery)

battery.

Discharging

· Dynamic: The charge controller is powering the

(The arrow between load.

the battery and the · Static: The charge controller is not powering the

load)

load.

Monitoring

Monitoring Menu

Checking Parameters

Icon

Parameter

Description Indicates four levels of the battery power (based on the battery voltage):
0-24%

Battery

25~49% 50~75% 75~100%

MPPT BOOST FLOAT EQUATIZE

Load

The load is powered off or the charge controller is not charging the load.
The load is powered on.

Charging Status

· MPPT: The charge controller charges the battery with all the energy from the solar panel.
· BOOST: When the battery is charged to the set point of the constant voltage, the charge controller will operate in the constant charging mode. The charging current gradually decreases.
· FLOAT: The charge controller charges the battery with a small current to prevent the battery from self-discharging.
· EQUATIZE: The charge controller charges the battery at a level higher than the voltage that it is typically charged to remove sulfate crystals that build up on the plates over time and balance the voltage of each cell. Periodic equalization charging is beneficial to certain types of batteries because it helps ensure the battery capacity and maintain its runtime.

Monitoring

Monitoring Menu

Checking Parameters

Icon
VC
kWAh
12V 24V

Parameter

Description

Value / Unit

V C
Kw A Ah

Indicates the parameters of the solar panel or the battery
Indicates the voltage of the solar panel or the battery
Indicates the temperature of the charge controller or the temperature sensor (if connected)
Used by the manufacturer for testing
It lights up for a short time when the charge controller is powered on.
Indicates the charging / discharging current of the battery
Indicates the charging / discharging current of the battery in an hour

System Voltage

For non-lithium batteries, the charge controller automatically identifies the voltage (12V or 24V). For lithium batteries, you need to set the voltage in the charge controller manually. For details, see System Voltage.
12V The system voltage is 12V.

24V The system voltage is 24V.

COM

Setting Serial Port Bluetooth

Lights up when setting parameters
Used by the manufacturer for testing It lights up for a short time when the charge controller is powered on.
Used by the manufacturer for testing It lights up for a short time when the charge controller is powered on.

Monitoring

Monitoring Menu

Checking Parameters

Icon

Parameter Abnormality
Battery Type

Description
Fault Check the error code on the LCD.
User-defined battery Flooded battery Gel battery Sealed lead-acid battery Lithium battery

Monitoring

Monitoring Menu

Checking Parameters

Checking Parameters
Press or to check parameters.

Main monitoring interface Solar panel voltage
V

Charging current
A

Error code

Battery voltage
V

Load mode

Load current
A

Temperature

Discharge capacity

C Ah

Charge capacity
Ah

Load Control

Turning Load On / Off
Load Control

Switching Load Mode

Turning Load On / Off

OFF

If the charge controller is

connected to the DC load,

press or off.

to turn the load on

Switching Load Mode

You can set the way to turn on / off the DC load.

NOTE

z To cancel the setting and exit, press

1. Press or

to select the load mode.

NOTE z This interface displays the current load mode.
2. Press and hold

for about 3 seconds until is lit up.

3s
52

Load Control

Turning Load On / Off

Switching Load Mode

3. Press or to adjust the value. Different values indicate the corresponding load modes. You can select the mode according to the table below.

Value 0
114 15 16 17

Mode Automatic mode
Timing mode Manual mode No delay mode 24-hour mode

Description

When the voltage of the solar panel is less than 10V for 5 minutes, the charge controller will automatically supply power to the load.
The charge controller will automatically stop supplying power to the load until the solar panel voltage is greater than or equal to 10V or the battery triggers the undervoltage warning.

This parameter indicates the supply duration in hours. For example,1 indicates that the charge controller supplies power to the load for an hour.
When the solar panel voltage is less than 10V, the charge controller automatically supplies power to the load for 1-14 hours (the time depends on the voltage).
If the solar panel voltage is greater than or equal to 10V or the battery triggers the undervoltage warning, the charge controller automatically stops supplying power to the load.

Factory default mode

Press

to turn the on / off the load.

When the solar panel voltage is less than 10V, the charge controller immediately supplies power to the load.
The charge controller will automatically stop supplying power to the load until the solar panel voltage is greater than or equal to 10V or the battery triggers the undervoltage warning.

The charge controller keeps supplying power to the load until the battery triggers the undervoltage warning.

Load Control

Turning Load On / Off

Switching Load Mode

4. After the settings are completed, press and hold for about 3 seconds to save the settings.

LED Indicators

Solar Panel LED Indicator
LED Indicators

Battery LED Indicator

Load LED Indicator

System Error LED Indicator

Indicator

Description Solar Panel LED Indicator

Function
Indicates the charging status of the charge controller

Battery LED Indicator

Indicates the working status of the battery

Indicator

Load LED Indicator

Indicates the working status of the load

System Error LED Indicator

Indicates whether the charge controller is operating normally
When the charge controller is faulty, the indicator lights up.

Solar Panel LED Indicator

Color White

Status ON

Description The solar panel is charging the battery.

White

Slow flash for The charge controller is in the boost

charging stage.

White

Single flash

The charge controller is in the float charging stage.

White

Flash for 0.1s

The charge controller is in the equlization charging stage.

White /

The solar panel is charging the battery Double flash slowly. The current is too low. Make sure
that the solar panel is not covered.

OFF

The voltage of the solar panel is too low or the solar panel is not detected.

LED Indicators
Solar Panel LED Indicator Battery LED Indicator

Load LED Indicator

System Error LED Indicator

Indicator

Battery LED Indicator

Color White

Status ON

Description The battery is operating normally.

White White
/

Slow flash for The battery is overdischarging. Charge the

battery as soon as possible.

The battery voltage is too high. Disconnect Flash for 0.1s the battery from the charge controller and
check whether the battery is damaged.

OFF

No battery is detected.

Indicator

Color White White
/

Load LED Indicator

Status

Description

The load is powered on.

Flash for 0.1s

Overload or short circuit. At the same time, the System Error LED Indicator lights up.
Check the error code for troubleshooting. For more details, see Troubleshooting in the user manual.

OFF

The load is powered off.

Indicator

System Error LED Indicator

Color White
/

Status ON OFF

Description Fault For more details, see Troubleshooting in the user manual.
The charge controller is operating normally.

Troubleshooting

Common Faults
Troubleshooting

Fault Codes

Common Faults

Fault

Troubleshooting

This indicates the solar panel voltage may be too low or the panel cannot be detected by the charge controller. Follow the troubleshooting steps below:

1. Inspect the solar panel for any visible damage and make sure it works normally. If the voltage of the solar panel is too low at night, check it again during the day.

2. Inspect the solar panel and keep it away from the shelter.

The solar panel is connected,
but the LED indicator of the solar panel can not light up.

3. Make sure the voltage of the solar panel is higher than the battery voltage. Otherwise, the solar panel cannot charge the battery.
4. Identify the polarities (positive and negative) on the cables used for the solar panel. A reverse polarity contact will cause the charge controller to work abnormally.

5. Make sure the cables of the solar panel are properly connected to the PV+ and PV- of the charge controller.

6. Inspect the cable of the solar panel for any visible damage.

7. Inspect the fuse of the solar panel for any visible damage.

For technical support, please contact our customer service through renogy.com/contact-us/.

The battery needs troubleshooting if it can not be detected. Follow the troubleshooting steps below:

1. Inspect the battery and replace it with a new one if it has any visible damage.

2. Measure the battery voltage with a multimeter and make

sure the system voltage of the battery is 12V or 24V.

Otherwise, the battery can not be detected by the charge

The battery is connected.

controller.

However, the indicators of the 3. Identify the polarities (positive and negative) on the cables

charge controller LCD and

used for the battery. A reverse polarity contact will cause the

battery LED can not light up. charge controller to work abnormally.

4. Make sure the cable of the battery is properly connected to the BAT+ and BAT- of the charge controller.

5. Inspect the cable of the battery for any visible damage.

6. Inspect the fuse of the battery for any visible damage.

For technical support, please contact our customer service through renogy.com/contact-us/.

Troubleshooting

Common Faults

Fault Codes

Fault

Troubleshooting

The charging current of the charge controller or the solar panel current is lower than
expected

1. The charge controller is in the float charging stage, and the charging current will gradually drop until the battery is fully charged.
2. Inspect the solar panel and keep it away from the shelter.
3. Check whether the sunlight intensity is high enough.
4. If the temperature of the charge controller is too high, the error code will not be displayed. Shut down the charge controller until the temperature drops to a standard value.
5. Select the appropriate cables and fuses according to the Recommended Cable and Fuse Sizing in this manual.
6. The voltage drops because the Solar Panel Extension Cable is too long.

displays over 1 to 2 days

1. Identify the polarities (positive and negative) on the cables used for the battery. A reverse polarity contact will cause the charge controller to work abnormally. Connect the battery first and then the solar panel. Otherwise, the charge controller may be damaged.
2. Measure the voltages of the battery, BAT+, and BAT- of the charge controller with a multimeter. If the voltages are inconsistent, the circuit is interrupted. Inspect the circuit and the battery fuse for any visible damage or incorrect connection.
3. The preset battery voltage is incorrect. Measure the battery voltage with a multimeter, and then reset the system voltage according to the actual use. For details, refer to System Voltage in this user manual. Disconnect the battery from the charge controller and reconnect to it to activate the battery.
4. The discharging speed of the battery is faster than the charging speed. Turn off or disconnect the load of the battery and charge the battery immediately to prevent the lithium battery from triggering BMS protection due to low voltage.
After the voltage of the lithium battery is restored, the battery will automatically exit the activation mode and work normally.

Troubleshooting
Common Faults Fault Codes

Fault

Troubleshooting

The load cannot be powered on after connection.

1. Identify the polarities (positive and negative) on the cables used for the battery. A reverse polarity contact will cause the load to work abnormally.
2. Make sure the load cables are properly connected.
3. Ensure that the load works normally. If the load is damaged, replace it with a new one.
4. Check the load mode. For details, refer to Switching Load Mode in this manual.
5. Check the battery voltage. If the battery voltage is too low, charge the battery immediately.

Error Codes
1. Under normal conditions, the System Error LED Indicator of the charge controller will not light up.

2. Press or enter the fault codes interface.
Perform troubleshooting according to steps listed in the table below.

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Description

Troubleshooting

No fault is detected The charge controller works normally.

Troubleshooting

Common Faults

Fault Codes

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Description

Troubleshooting

Measure the battery voltage with a multimeter. If the Battery overdischarge battery voltage is too low, disconnect the load from
the battery and charge the battery.

Battery overcharge

Measure the battery voltage with a multimeter. If the battery voltage is too high, disconnect the battery from the charge controller and replace the battery with a new one.

Load short circuit

Follow the troubleshooting steps below:
1. Disconnect the load. Measure the load voltage with a multimeter and ensure that the load voltage matches the battery voltage.
2. Make sure the load is properly connected.
3. Inspect the load for any visible damage.
4. Disconnect the battery from the charge controller and restart the charge controller.
5. If the fault code remains, replace the load with a new one.
For technical support, please contact our customer service through renogy.com/contact-us/.

Load overload

1. Check the load voltage. If the system voltage of the charge controller is 12V, the load port can only be connected with the 12V DC load. Otherwise, connect the load port with the 24V DC load.
2. The maximum current of the load port on the charge controller is 20A. Ensure that the rated load charge current does not exceed 20A.

Charge controller overtemperature

Follow the troubleshooting steps below:
1. Short press or to check the temperature. If the temperature is too high, disconnect all devices from the charge controller immediately.
2. Ensure that the charge controller is installed on a flat surface indoors protected from direct sunlight, high temperature, and water.
3. Make sure there is good ventilation.
4. Select the appropriate cables and fuses according to the Recommended Cable and Fuse Sizing in this manual.
5. Reconnect the charge controller after the temperature drops to a standard value.

Troubleshooting
Common Faults Fault Codes

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Description
Solar panel overcurrent
Solar panel overvoltage

Troubleshooting
1. Make sure the solar panel is not short circuited. 2. Ensure that the power of the solar panel does not
exceed the rated power of the charge controller.
The maximum DC input voltage of the charge controller is 100V. Make sure the voltage of the solar panel array is less than or equal to 100V. Otherwise, reduce the number of solar panels.

NOTE z For technical support, please contact our customer service through renogy.com/contact-us/.

Technical Specifications

Parameter

Value

Model

RNG-CTRL -RVR20

RNG-CTRL -RVR30

RNG-CTRL -RVR40

Rated Battery Input Voltage

Non-lithium12V/24V (automatic recognition) Lithium12V/24V (manual setting)

Battery Input Voltage Range

10V to 32V DC

Rated Charge Current

20A

30A

40A

Rated Load Charge Current

20A

Rated Solar Input Power

12V @ 260W 24V @ 520W

12V @ 400W 24V @ 800W

12V @ 520W 24V @ 1040W

Maximum Solar Input Power

520W

800W

1040W

Maximum Solar Input Voltage (Voc)

100V DC

Solar Input Voltage Range (Voc)

15V to 100V DC

Power Consumption

100mA @12V 58mA @24V

MPPT Tracking Efficiency

>99%

Conversion Efficiency

98%

Charger Efficiency

>95%

MPPT Operating Voltage Range

17V to 100V DC

Temperature Compensation

Non-lithium: -3mV / °C / 2V Lithium: 0mV / °C / 2V; no compensation

Charger Algorithm

Lead acid battery: 3-stage charging (Bulk, Boost, and Float) with Equalization
Lithium batteries: 2-stage charging (Bulk and Boost)

Charger Preset

AGM, Gel, Flooded, Li, User-defined

Cable Size

8 AWG to 12 AWG 8 AWG to 10 AWG 6 AWG to 8 AWG

Grounding

Common Negative

Communication

RS232 Modbus

Operating Temperature

-31°F to 113°F / -35 to 45

Technical Specifications

Parameter Storage Temperature
Humidity Maximum Operating Altitude
Cooling Enclosure Rating
Dimensions (L x W x H)
Weight Regulatory and Safety
Specifications

Value

-31°F to 167°F or -35 to 75

0% to 95% RH

3000m

Heat Sink

IP32

8.27 x 5.95 x 2.69 in 210 x 151 x 68 mm

9.38 x 6.78 x 3.05 in 238 x 172 x 77 mm

3.1 lbs / 1.4 kg

4.4 lbs / 2.0 kg

FCC Part 15 Class B, CE, RoHS, RCM

MPPT Conversion Efficiency

MPPT Conversion Efficiency
Light Intensity: 1000W/m2

Temperature: 25°C

96% 95% 94% 93% 92% 91% 90% 89% 88% 87%

MPPT 12V conversion efficiency (12V battery)

20 Vmp 40 Vmp 60 Vmp

75 Vmp

550 525 500 475 450 425 400 375 350 300 250 200 150 100 50

Output powerW

98% 96% 94% 92% 90% 88% 86%
1100

MPPT 24V conversion efficiency (24V battery)
40 Vmp 50 Vmp 60 Vmp 75 Vmp
1000 900 800 600 500 300 100 Output powerW

Dimensions

RNG-CTRL-RVR20
Dimensions

RNG-CTRL-RVR30 or RNG-CTRL-RVR40

RNG-CTRL-RVR20

5.95 in [151 mm]

2.69 in [68 mm]

8.27 in [210 mm]

0.5 in [13.9 mm] RS232 Temp. PV+ PV- BAT+ BAT- LOAD+ LOAD-
5.7 in [143.6 mm]

6.1 in [154 mm]

5.2 in [131 mm]

0.2 in [4.5 mm]

0.4 in [9 mm]

NOTE z Dimension tolerance: ±0.2 in (0.5 mm)

Dimensions
RNG-CTRL-RVR20 RNG-CTRL-RVR30 or RNG-CTRL-RVR40

RNG-CTRL-RVR30 or RNG-CTRL-RVR40

6.78 in [172 mm]

3.05 in [77 mm]

9.38 in [238 mm]

0.7 in [18.0 mm] RS232 Temp. PV+ PV- BAT+ BAT- LOAD+ LOAD-
6.6 in [167.6 mm]

7.0 in [180 mm]

5.8 in [147 mm]

0.2 in [4.5 mm]

0.4 in [10 mm]

NOTE z Dimension tolerance: ±0.2 in (0.5 mm)

Maintenance

Inspection
Maintenance

Cleaning

Storage

Inspection
For optimum performance, it is recommended to perform these tasks regularly. z Check the appearance of the charge controller to make sure it is clean and dry. z Ensure the charge controller is mounted in a clean, dry, and ventilated area. z Ensure there is no damage or wear on the cables. Ensure the firmness of the Anderson
connectors and check if there are any loose, damaged or burnt connections. z Make sure that the indicators are in normal state. z Ensure there is no corrosion, insulation damage, or discoloration marks of overheating or
burning.
NOTE
z In some applications, corrosion may exist around the contacts inside the Anderson connector. Corrosion can loosen springs and increase resistance, leading to premature connection failure. Apply dielectric grease to each connector contact periodically. Dielectric grease repels moisture and protects the connector contacts from corrosion.
WARNING z Risk of electric shock! Make sure that all power is turned off before touching the terminals on
the charge controller.

Cleaning
Follow the steps below to clean the charge controller regularly. z Disconnect all Anderson connectors that are connected to the charge controller. z Wipe the housing and connector contacts with a dry cloth or non-metallic brush. If it is still
dirty, you can use household cleaners. z Dry the charge controller with a clean cloth and keep the area around the charge controller
clean and dry. z Make sure the charge controller is completely dry before reconnecting it to the solar panel
and the battery. z When reconnecting, the battery must be connected first, then the solar panel.

Storage
Follow the tips below to ensure that the charge controller is stored well. z Disconnect all Anderson connectors that are connected to the charge controller. z By applying dielectric grease to each connector contact, the dielectric grease repels
moisture and protects the connector contacts from corrosion. z Store the charge controller in a well-ventilated, dry and clean environment with a
temperature between -13°F and 149°F.
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Emergency Responses
Fire Flooding Smell Noise
Emergency Responses
In the event of any threat to health or safety, always begin with the steps below before addressing other suggestions. z Immediately contact the fire department or other relevant emergency response team. z Notify all people who might be affected and ensure that they can evacuate the area.
WARNING z ONLY perform the suggested actions below if it is safe to do so.
Fire
1. Disconnect all cables connected to the charge controller. 2. Put out the fire with a fire extinguisher. Acceptable fire extinguishers include water, CO2, and
ABC. WARNING
z Do not use type D (flammable metal) fire extinguishers.
Flooding
1. If the charge controller is submerged in water, stay away from the water. 2. Disconnect all cables connected to the charge controller.
Smell
1. Disconnect all the cables from the charge controller. 2. Ensure that nothing is in contact with the charge controller. 3. Ventilate the room.
Noise
1. Disconnect all cables connected to the charge controller. 2. Make sure no foreign objects are stuck in the Anderson connector.
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Technical Support
Technical Support
For additional support, contact the Renogy technical support team through renogy.com/contactus. Have the following information available when contacting Renogy. z Owner name z Contact information z Order number z Purchase channel z Serial number z Brief description of the issue
Renogy offers premium services worldwide:

North America Asia / Pacific Europe

US www.renogy.com UK uk.renogy.com AU au.renogy.com FR fr.renogy.com ES es.renogy.com

CN www.renogy.cn CA ca.renogy.com JP renogy.jp DE de.renogy.com KR kr.renogy.com

FCC Statement
This device complies with Part 15 of the FCC Rules. FCC ID: 2ANPBRSMLP4-G2. Operation is subject to the following two conditions: (1) This device may not cause harmful interference. (2) This device must accept any interference received, including interference that may cause
undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: (1) Orient or relocate the receiving antenna. (2) Increase the separation between the equipment and receiver. (3) Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected. (4) Consult the dealer or an experienced radio / TV technician for help.
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20 cm between the radiator & your body.
70

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Documents / Resources

RENOGY RNG-CTRL-RVR20 Rover Li MPPT Solar Charge Controller [pdf] User Manual
RNG-CTRL-RVR20, RNG-CTRL-RVR30, RNG-CTRL-RVR40, RNG-CTRL-RVR20 Rover Li MPPT Solar Charge Controller, RNG-CTRL-RVR20, Rover Li MPPT Solar Charge Controller, MPPT Solar Charge Controller, Solar Charge Controller, Charge Controller

References

User Manual

RENOGY RNG-CTRL-RVR20 Rover Li MPPT Solar Charge Controller User Manual

RNG-CTRL-RVR20 Rover Li MPPT Solar Charge Controller

Product Information

Specifications

Product Usage Instructions

Important Safety Information

General Safety Information

Mounting with Brackets

Installation

Technical Support

FAQ

Q: Can I use the Rover Li Series MPPT Solar Charge Controller
with a 12V battery?

Q: Is it necessary to ground the charge controller during
installation?

Q: What should I do if I encounter a fault code on the
display?

Documents / Resources

References

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