Renogy Pro Series 12.8V 100Ah Smart Lithium Iron Phosphate Battery User Manual

Before Getting Started

The user manual provides important operation and maintenance instructions for the Renogy Pro Series 12.8V 100Ah Smart Lithium Iron Phosphate Battery (hereinafter referred to as battery). Read the user manual carefully before 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 battery, potentially rendering it inoperable.

• [Warning] Indicates a potentially hazardous condition that could result in personal injury or death.
• [Caution] Indicates a critical procedure for safe and proper installation and operation.
• [Note] Indicates an important step or tip for optimal performance.

Disclaimer

Renogy Pro Series 12.8V 100Ah Smart Lithium Iron Phosphate Battery User Manual © 2023 Renogy. All rights reserved. RENOGY and RENOGY are registered trademarks of Renogy.

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

Online Manual: User Manual

Introduction

The Renogy Pro Series 12.8V 100Ah Smart Lithium Iron Phosphate Battery adopts a proprietary battery housing material in a smaller size for RV applications. Weighing only half of lead-acid counterparts, the battery can be safely discharged to 100% Depth of Discharge (DOD), delivering twice the energy. Manufactured with automotive-grade battery cells, the battery features the highest safety standards and an extended 5000+ cycle life. The smart Battery Management System (BMS) provides comprehensive protection to the battery.

Key Features

• Unparalleled Performance: Features greater energy density, deeper discharge capability, higher round-trip efficiency, and faster charging speed in a smaller size compared to market counterparts.
• Uncompromising Quality: Ensures an exceptional lifespan with more than 5000 cycles (80% DOD), a continuous charge or discharge current of 100A, and a wide range of operating temperatures with automotive-grade battery cells.
• Reliable Protection Mechanisms: Designed with a sturdy internal structure for RV use, including over 60 protections and alarms through the smart battery management system.
• Real-time Monitoring Through DC Home App: Easily access battery information through the DC Home App at any time.
• Intelligent Self-Heating Function & More Stable Performance: The built-in heater operates automatically at low temperatures to keep the battery charging, ensuring performance and increasing battery lifespan.
• Active Safety Protection with Self-Control Fuse: Unlike ordinary passive fuses, the self-control fuse effectively prevents battery overcurrent and overvoltage failures.
• Best-in-Class Capacity and Easy Expansion: Provides a maximum capacity of over 105Ah for longer applications. Supports up to 8 batteries in parallel, delivering a maximum of 12.8V 800Ah at 10.24kWh.

SKU

Renogy Pro Series 12.8V 100Ah Smart Lithium Iron Phosphate Battery RBT12100LFP-BT

What's In the Box?

• Renogy Pro Series 12.8V 100Ah Smart Lithium Iron Phosphate Battery x 1
• User Manual x 1
• Terminal Bolts x 2 (M8*1.25*12 mm)
• Long Terminal Bolts x 2 (M8*1.25*16 mm)

[Note] Make sure that all accessories are complete and free of any signs of damage.

Required Tools & Accessories

• Wrench (13mm / 17/32 in)
• Battery Adapter Cables x 2 (5/16 in / M8)
• Insulating Gloves
• Multimeter

[Note] Prior to installing and configuring the battery, prepare the recommended tools, components, and accessories.

[Note] For how to size battery adapter cables, refer to "How to Size Battery Adapter Cables?" in this manual.

Get to Know Smart Lithium Iron Phosphate Battery

Top View

The top of the battery features a Positive Terminal (M8), Lift Handles, and a Negative Terminal (M8).

Bottom View

The bottom of the battery includes Mounting Holes for a Battery Fix Bracket.

Dimensions

Dimensions: 10.6 in (268 mm) x 7.6 in (193 mm) x 8.1 in (205 mm)

Weight: 26.9 lbs. (12.2 kg)

[Note] Dimension tolerance: ±0.2 in (0.5 mm)

How to Size Battery Adapter Cables?

Use appropriately sized Battery Adapter Cables (sold separately) based on expected load. Refer to the table below for copper cable ampacities with different gauge sizes.

[Note] The above values are from the NEC Table 310.17 for copper cables rated at 194°F (90°C), operating at an ambient temperature of no more than 86°F (30°C). Cables longer than 13 feet (4000 mm) may require thicker gauge wires to prevent excessive voltage drop in undersized wiring.

Secure the Battery (Optional)

Securing the battery prevents damage to the battery from loose cables and bumps.

Recommended Components & Tools

Components include: Battery Fix Bracket (with 8 M4*10 mm Fix Bolts), Mounting Screws x 8, Phillips Screwdriver (#2).

[Note] Recommended components marked with "*" are available on renogy.com.

[Note] Alternative mounting methods are allowed to meet the requirements of specific applications.

[Note] Choose proper mounting screws specific to your installation site. This manual takes self-tapping screws for wooden walls as an example.

[Caution] Do not install batteries sideways or upside down.

Step 1: Install the battery fix bracket through the mounting holes on the battery.

Diagram description: Install the battery fix bracket through the mounting holes on the battery, securing with fix bolts at 14.16 in·lbs (1.6 N·m).

Step 2: Mount the battery on a flat surface.

Diagram description: Mount the battery on a flat surface, securing with mounting screws on the left and right sides at 14.16 in·lbs (1.6 N·m).

Installation Steps

Step 1. Plan a Mounting Site

For optimal battery performance, it is recommended to install the battery in a clean, cool, and dry location, free from any accumulation of water, oil, or dirt. Accumulation of such materials on the battery can lead to current leakage, self-discharge, and even short-circuiting.

Environmental Requirements:

• [Keep Dry]
• [Fragile]
• [Ventilation]

Operating Temperature Ranges:

• Charge: -4°F to 131°F / -20°C to 55°C
• Discharge: -4°F to 140°F / -20°C to 60°C

Operation Relative Humidity: 10% to 95%

[Note] Sufficient airflow must be provided to prevent excessive heat build-up and to minimize temperature variation between the connected batteries.

[Note] This user manual takes a battery as an example to illustrate how to install the battery.

Step 2. Wear Insulating Gloves

Wear insulating gloves for safety during installation.

Step 3. Check the Battery

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

[Caution] Do not touch the exposed electrolyte or powder if the battery is damaged.

[Caution] If uncovered electrolyte or powder contacts your skin or eyes, flush it out immediately with plenty of clean water and seek medical attention.

Step 4. Install Battery Terminals

Diagram description: Install terminal bolts, spring washer, and flat washer onto the battery terminals, connecting the battery adapter cable. Torque specification: 70.8 in·lbs (8 N·m).

[Note] Ensure the cable lug and the top surface of the terminal are in contact, and place the washers on top of the lug. Do not place the washers between the battery terminal and the cable lug to avoid high resistance and excessive heating.

[Caution] Avoid short-circuiting the battery terminals to prevent irreversible damage to the system and battery caused by current bursts.

[Caution] Verify polarity before wiring to avoid irreversible battery damage due to polarity reversal.

[Caution] Do not touch the positive and negative terminals of the battery with your hands.

[Note] To ensure safe and reliable operation of the system, please follow the torque specifications recommended by the manufacturer when securing cable connections. Over-tightening can result in terminal breakage, while loose connections can lead to terminal meltdown or fire. When securing multiple cable lugs on a single battery terminal, use the included Long Terminal Bolts.

Step 5. Connect the Battery to Other Devices

[Caution] Please use circuit breakers, fuses, or disconnects appropriately sized by a certified electrician, licensed installers, or regional code authorities to protect all electrical equipment.

For a Single Battery

Diagram description: Connection of a single battery to an inverter, DC-DC charger, DC distribution panel, and charge controller via a battery fuse.

For Batteries in Parallel

Diagram description: Parallel connection of multiple batteries to the same devices.

How to Connect Renogy Pro Batteries in Parallel?

Calculate Voltage and Current in Parallel Connections

Diagram description: Parallel connection of four 12.8V 100Ah batteries to achieve a 12.8V 400Ah system. The system voltage remains 12.8V, and the system current is the sum of individual battery currents.

[Note] This battery is designed for parallel use only.

[Note] Long terminal bolts (M8 * 1.25 * 16 mm) should be used to secure the battery adapter cables. The recommended torque is 70.8 in·lbs (8 N·m).

[Caution] Do not connect batteries with different chemistries, rated capacities, nominal voltages, brands, or models in parallel or in series. This can result in potential damage to the batteries and the connected devices, and can also pose safety risks.

[Caution] Avoid connecting batteries that have been purchased for more than half a year. Over time, batteries can degrade and their performance may decrease, which can affect their ability to deliver reliable power and may lead to safety hazards.

[Note] The cables between each connected battery should be of equal length to ensure that all batteries can work equally together.

Balance Batteries Prior to Connection

Before connecting batteries in parallel, it is important to balance them to reduce voltage differences and optimize their performance. Follow these three steps:

Step 1: Charge each battery individually to its full capacity using a suitable charger.

Diagram description: Individual battery charging setup.

Step 2: Use a voltmeter to measure the voltage of each battery. It is best to keep the voltage difference of each battery less than 0.1V.

Diagram description: Measuring battery voltage with a voltmeter.

Step 3: Connect all the batteries in parallel and allow them to rest together for 12 to 24 hours.

Diagram description: Parallel connection of batteries and resting period (12-24h).

[Note] It is recommended to periodically rebalance the battery voltages every six months when connecting multiple batteries as a battery system. Slight voltage differences can occur among batteries over time due to factors like battery chemistry, capacity, temperature, and usage patterns.

Parallel Connection – Installation Steps

[Caution] You can choose suitable busbars in parallel connections. Busbars help handle high currents and are typically arranged in a parallel or stacked configuration to distribute electrical power efficiently.

[Note] Note that the cable connection methods provided below are for reference purposes only, as the optimal approach may vary depending on the specific situation. It is essential to consider various factors, such as the cable size, equipment used, and environmental conditions.

Diagram description: Parallel connection configurations.

Battery Cell Balancing

The battery employs a bypass circuit to maintain balance between each battery cell group. Each battery cell group is connected with a bypass resistor and a switch in parallel. During the charging process, if the highest-voltage battery cell group reaches the set balancing starting voltage, and the voltage difference between the highest-voltage and the lowest-voltage battery cell group exceeds the set voltage difference, the switch connected to the highest-voltage battery cell group will be closed. This action shunts the charge current around the highest-voltage battery cell group through the bypass resistor until the voltage difference drops below the set value.

To avoid excessive energy loss, the battery cell balancing is only performed during the charging process.

Remote, 24/7 Monitoring via DC Home App

Step 1: Download the DC Home app. Login to the app with your account.

Description: Download the DC Home app from the Google Play Store or Apple App Store. Log in with your account credentials.

Step 2: Pair the battery with the DC Home app. Monitor and modify the parameters of the battery via the app.

Description: Pair your battery with the DC Home app by following the on-screen instructions. Once paired, you can monitor and modify battery parameters.

Charging/Discharging Parameter Settings

Charge

Discharge

Battery Charging and Discharging Logic

The battery may be received at a partial state of charge (SOC) depending on the time between manufacturing and shipping. It is crucial to fully charge the battery before its initial use. In case the battery shuts off due to low SOC, promptly disconnect it from loads and charge it to prevent irreversible damage. Follow the instructions in this user manual for proper charging and usage to ensure optimal battery performance and longevity.

Charging Logic

The standard charging process involves charging at a constant current of 50A until the battery voltage reaches 14.4V, followed by charging at a constant voltage of 14.4V while tapering the charge current. The process is complete when the charge current is less than 5A (tail current).

The standard charging process typically takes 2.5 hours and requires battery temperatures between 32°F and 131°F (0°C and 55°C) for safe charging. Leaving the battery on float will continue to balance the battery cells without damage.

Diagram description: Graph showing Current tapering from 50A to 5A during Constant Current phase, then holding at 5A during Constant Voltage phase at 14.4V.

[Note] Lithium batteries are compatible with various charging methods, including MPPT charge controller, AC charger, and DC-DC charger. The crucial parameter setting for these chargers is to set the charge voltage, boost voltage, or bulk voltage at 14.4V (±0.2V).

[Caution] Do not overcharge or overdischarge the battery.

[Caution] Do not discharge the battery at high temperatures above 140°F (60°C).

[Caution] Only charge the battery with a compatible battery charger or charge controller for lithium iron phosphate batteries.

[Caution] Do not exceed the maximum continuous charge current (100A) of the battery.

Discharging Logic

During standard discharging, the battery is discharged at a constant current of 50A until the voltage drops to 10V. For safe discharging, the battery temperature should be between -4°F (-20°C) and 131°F (60°C).

[Note] To ensure safe and optimal battery usage, it is recommended to pair the battery with discharge equipment that features a low voltage disconnect (LVD) function.

[Caution] Do not connect large loads to the battery when it is running low.

[Caution] Do not exceed the maximum continuous discharge current (100A) of the battery.

How to Estimate the Battery SOC?

The SOC values listed below are estimated based on the open circuit voltage when the battery is at rest for 30 minutes, not in charging or discharging state.

[Note] The table above is for reference only because slight variations in battery voltage may occur among different batteries.

Self-Heating Function

The normal operation of the self-heating function requires a stable charge current greater than 4A for each battery in the parallel battery bank. The self-heating function starts automatically when the battery temperature drops below 41°F (5°C) and stops when the temperature rises above 50°F (10°C). The temperature rise rate is approximately 51.8°F (11°C) per hour when running at full power of 55W (4A).

Battery Management System

This smart battery management system has more than 60 fault alarms and protections to fully protect your battery safety. Below are some common faults and protections for reference.

Troubleshooting

[Note] For further assistance, contact Renogy technical support service at https://www.renogy.com/contact-us.

Specifications

General

Operation Parameters

Maintenance & Storage

Inspection

Please perform regular inspections following the steps below:

• Examine the external appearance of the battery. The housing and terminals of the battery shall be clean, dry, and free of corrosion.
• Check battery cables and connections. Replace any damaged cables and tighten any loose connections.

[Note] In certain application scenarios, corrosion may occur around the terminals. Corrosion can cause increased resistance and poor contact. It is recommended to regularly apply insulation grease to each terminal. Insulation grease can form a moisture-resistant seal and protect the terminals from corrosion.

Cleaning

Please clean the battery at regular intervals following the steps below:

• Disconnect the battery from the system.
• Clear the leaves and debris from the battery.
• Clean the battery with a soft, lint-free cloth. The cloth can be dampened with water or mild soap and water if the battery is extremely dirty.
• Dry the battery with a soft, lint-free cloth.
• Keep the area around the battery clean.
• Reconnect the battery to the system.

Checking Voltage

Please check the battery voltage periodically to assess battery health. If the battery is unable to be activated with a charge/discharge current greater than 1A or the battery is activated with a open circuit voltage below 10V, the battery may have been severely overdischarged due to self-discharge or parasitic loads. Please stop using the battery until the fault can be corrected and the battery can be charged.

Storage

Please follow the tips below to ensure that the battery emerges from storage in a good condition:

• Charge the battery to 30% to 50% SOC.
• Disconnect the battery from the system.
• Store the battery in a well-ventilated, dry, clean area with temperatures between -13°F (-25°C) and 149°F (65°C).
• Do not expose the battery to direct sunlight, moisture, or precipitation.
• Handle the battery carefully to avoid sharp impacts or extreme pressure on the battery housing.
• Charge the battery at least once every 3~6 months to prevent it from overdischarge.
• Fully charge the battery when it is taken out of storage.

Important Safety Instructions

Renogy accepts no liability for any damage caused by:

• Force majeure including fire, typhoon, flood, earthquake, war, and terrorism.
• Intentional or accidental misuse, abuse, neglect or improper maintenance, and use under abnormal conditions.
• Improper installation, improper operation, and malfunction of a peripheral device.
• Contamination with hazardous substances or radiation.
• Alterations to the product without express written consent from the manufacturer.

General

• Wear proper protective equipment and use insulated tools during installation and operation. Do not wear jewelry or other metal objects when working on or around the battery.
• Keep the battery out of the reach of children.
• Do not dispose of the battery as household waste. Comply with local, state, and federal laws and regulations and use recycling channels as required.
• In case of fire, put out the fire with a FM-200 or CO2 fire extinguisher.
• Do not expose the battery to flammable or harsh chemicals or vapors.
• Clean the battery regularly.
• It is recommended that all cables should not exceed 10 meters because excessively long cables result in a voltage drop.
• The cable specifications listed in the quick guide account for critical, less than 3% voltage drop and may not account for all configurations.
• Do not expose the battery to strong electrostatic fields, strong magnetic fields, or radiation.

Battery Safety

• Please keep the battery away from water, heat sources, sparks, and hazardous chemicals.
• Do not puncture, drop, crush, burn, penetrate, shake, strike, or step on the battery.
• Do not open, dismantle, repair, tamper with, or modify the battery.
• Do not touch any terminals or connectors.
• Please make sure any battery charger or charge controller has been disconnected before working on the battery.
• Do not connect or disconnect terminals from the battery without first disconnecting loads.
• Do not place tools on top of the battery.
• Please use suitable handling equipment for safe transportation of the battery.
• Do not insert foreign objects into the positive and negative terminals of the battery.

Renogy Support

To discuss inaccuracies or omissions in this quick guide or user manual, visit or contact us at:

• renogy.com/support/downloads
• contentservice@renogy.com

To explore more possibilities of solar systems, visit Renogy Learning Center at: renogy.com/learning-center

For technical questions about your product in the U.S., contact the Renogy technical support team through:

• renogy.com/contact-us
• 1(909)2877111

For technical support outside the U.S., visit the local website below:

• Canada: ca.renogy.com
• Australia: au.renogy.com
• South Korea: kr.renogy.com
• United Kingdom: uk.renogy.com
• China: www.renogy.cn
• Japan: renogy.jp
• Germany: de.renogy.com
• Other Europe: eu.renogy.com

Battery Recycling

The proper disposal and recycling of batteries are essential for environment protection and circular economy. We encourage correctly disposing of your batteries when they become depleted.

You can dispose your used batteries at any of Call2Recycle or Earth911 locations that accepts Renogy rechargeable Lithium-ion and Lead-acid batteries (AGM&GEL).

• www.call2recycle.org/locator
• search.earth911.com

Enjoy our community's incentive program when you properly dispose of your batteries. You can earn $20 gift cards to purchase any products on our website by participating. It's a simple way to be environmentally responsible and be rewarded for recycling.

• renogy.com/support

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