Renogy 51.2V 105Ah Lithium Iron Phosphate Battery

Introduction

The Renogy 51.2V 105Ah Lithium Iron Phosphate Battery is a high-capacity lithium battery designed for modern electric vehicles like golf carts and club carts. It offers unmatched performance, reliability, and convenience, combining high power output, exceptional longevity (5,000 cycles), and a lightweight, compact form factor. Key features include a built-in Battery Management System (BMS), fast charging capabilities, and real-time monitoring for seamless operation.

Key Features

• Superb Performance & Built-in BMS: Delivers 5.376kWh of usable energy capacity with a 220A BMS, allowing continuous 210A discharge and 400A peak discharge for up to 30 seconds.
• Exceptional Longevity and Long Range: Offers over 5,000 cycles (80% DOD) and high capacity on a single charge. It is 50% lighter than lead-acid batteries of similar capacity, making it easier to handle and install.
• Fast Charging Capability: Comes with a 58.4V 20A dedicated 48V battery charger, supporting fast charging from 0% to 100%.
• Real-Time Monitoring: Provides visibility and control of battery status (voltage, current, temperature) via the included battery indicator or the DC Home app through Bluetooth.
• Low-Temperature Protection: Features low-temperature charging and discharging protection for reliable performance in cold weather.

What's In the Box?

The package includes:

• Renogy 51.2V 105Ah Lithium Iron Phosphate Battery x 1
• User Manual x 1
• Insulation Sleeves x 2
• Terminal Bolts x 2 (M8*15 mm)
• Battery Fixing Bolts (with nuts) x 4 (M8*30 mm)
• Battery Indicator (with a support bracket and two fixing nuts) x 1
• Battery Indicator Communication Cable (3m) x 1
• Battery Extension Cables (0.72m) x 2
• Battery Charger x 1
• AC Input Cable (3m) x 1
• Additional Charger Indicator (with a 1.45m cable) x 1

Ensure all accessories are complete and free of any signs of damage.

Get to Know Lithium Iron Phosphate Battery and Charger

Battery Overview

The battery features:

• On/Off Switch
• Battery Indicator Port
• Negative Terminal (M8)
• Bluetooth Antenna
• Fixing Holes
• Lift Handles
• Explosion-Proof Valve Vent
• Positive Terminal (M8)

Battery Charger Overview

The battery charger includes:

• Charger LED Indicator
• Mounting Hole
• AC Connector
• Explosion-Proof Valve Vent
• Additional Charger Indicator Connector
• DC Negative Terminal
• DC Positive Terminal

Explosion-Proof Valve Vent

This component ensures safety during operation by releasing internal gas pressure. The valve opens when pressure reaches a threshold and closes when it drops, maintaining an optimal sealed state.

Dimensions

Battery Dimensions: 15.55 in (395 mm) x 12.99 in (330 mm) x 10.63 in (270 mm)

Battery Weight: 106.92 lbs (48.5 kg)

Battery Charger Dimensions: 11.1 in (282 mm) x 5.75 in (146 mm) x 11.81 in (300 mm)

Dimension tolerance: ±0.2 in (0.5 mm)

Required Tools & Accessories

• Insulating Gloves
• Multimeter
• Wrench (17/32 in)
• Self-tapping Screws x 4 (ST7 mm)
• Phillips Screwdriver (#2)
• Insulation Tape

Prepare recommended tools and accessories before installation. Choose proper mounting screws specific to your installation site.

Installation

This manual focuses on golf cart applications. Typically, the battery is installed under the seat or on the cart's chassis. Similar rules apply to other scenarios if safety and performance requirements are met.

Step 1. Wear Insulating Gloves

Wear insulating gloves before proceeding.

Step 2. Check the Battery and Battery Charger

Inspect both for any visible damage (cracks, dents, deformation). Ensure all connector contacts are clean, dry, and free of corrosion.

WARNING: Do not touch exposed electrolyte or powder if the battery is damaged.

WARNING: Connecting the battery in series or parallel is NOT allowed.

Step 3. Remove Legacy Batteries

Ensure your golf cart's rated voltage is 48V. Follow the golf cart's user manual to remove the old battery/batteries.

WARNING: Installing this battery in a non-48V system is prohibited and may void the warranty.

If unsure about the voltage, use a multimeter. Do not dispose of old batteries as household waste; use proper recycling channels.

Step 4. Fix the Battery and Battery Charger

Install the battery vertically with lift handles on top. For optimal performance, install in a clean, cool, dry, and well-ventilated location, away from water, oil, or dirt.

RISK OF EXPLOSION: Do not install in a sealed space. Ensure proper ventilation.

Ensure sufficient airflow to prevent heat buildup. Consider the 1.3-meter DC cable length of the charger when positioning.

Fix the Battery

Use the included battery fixing bolts (with nuts) to secure the battery through any four of the seven fixing holes on each side. If the holes do not align, drill 8mm holes.

CAUTION: Ensure the battery is securely installed to prevent loosening or falling.

Fix the Battery Charger

Use self-tapping screws (not included) to secure the battery charger in a proper position.

CAUTION: Ensure the battery charger is securely installed to prevent loosening or falling.

Step 5. Battery Wiring

1. Connect the negative battery terminal and the charger's DC negative terminal to the battery's negative terminal using a terminal bolt.
2. Connect the positive battery terminal and the charger's DC positive terminal to the battery's positive terminal using the other terminal bolt.

Ensure direct contact between terminals. Use extension cables if needed. Wrap connection points with insulation tape. Verify polarity before wiring.

Step 6. Install the Battery Indicator (Optional)

Connect the CAN connector of the battery indicator communication cable (3m) to the battery indicator port.

1. Choose an installation location for the indicator, ensuring it's within 9.84 ft (3m) of the battery. Drill a 1.97-inch (50 mm) hole for the indicator.
2. Secure the indicator with the provided support bracket and nuts.
3. Connect the other end of the communication cable to the indicator.
4. Connect the bare wire of the communication cable to the negative end of the golf cart's electric door lock for automatic power-on. Refer to the golf cart manual or manufacturer for details. Ensure connections are wrapped with insulating tape.

Step 7. Install the Additional Charger Indicator (Optional)

Connect the charger indicator to the charger indicator connector on the battery charger.

Step 8. AC Input Wiring

Connect the AC input cable (3m) to the AC connector on the battery charger.

Step 9. Install Insulation Sleeves

Install insulation sleeves over the terminals.

Operation

Power On/Off

• Power On: Press and hold the On/Off Switch for 1 second. The switch LED will light up.
• Power Off: Press the On/Off Switch. After 1 second, the switch LED will turn off.

How to Charge the Battery?

The battery may be received at a partial state of charge (SOC). Fully charge it before initial use using the included battery charger. Connect the AC input cable to a power outlet; the charger will begin charging. Monitor charging status via the charger's LED indicator, the battery indicator, the additional charger indicator, or the DC Home app.

Monitoring

Monitor battery and charger status through:

• Charger LED indicator
• Included battery indicator
• Additional charger indicator
• DC Home app (free of charge)

Charger LED Indicator

• Charging: Flickering red at an interval of 1s.
• Charge completed: Solid green.

The LED indicator also provides fault alerts:

Battery Indicator

Monitor battery data such as Present Battery Voltage, Battery Type, Battery SOC, and Battery Charge/Discharge Current.

DC Home app

Monitor battery performance remotely via Bluetooth using the Renogy DC Home app. Ensure Bluetooth is enabled on your phone. Keep the phone within 10 feet (3 m) of the battery for optimal performance. Download and log in to the app, then tap '+' to search for new devices and confirm to add the battery.

Battery Charging/Discharging Logics

Charging Logic

The battery charger operates at up to 20A and 58.4V, with a built-in temperature sensor for reliable performance in extreme temperatures (-40°F to 122°F or -40°C to 50°C). The IP66 design ensures waterproof performance.

Charging Profile

The charging process follows three stages:

• Stage 1: Constant current of 5.5A, voltage limit 51.2V until battery voltage reaches 51.2V.
• Stage 2: Constant current of 20A, voltage limit 56.8V. If voltage doesn't reach 56.8V, transit to Stage 3 after 10 hours.
• Stage 3: Constant voltage of 58.4V, current limit 20A. Charging ends when current drops to 0.8A or after 5 hours if it doesn't reach 0.8A.

Safe charging requires battery temperatures between 32°F and 113°F (0°C and 45°C).

Discharging Logic

The battery discharges at a constant current of 105A until the voltage drops to 40V. Recommended battery temperature for safe discharging is between -4°F (-20°C) and 131°F (60°C).

Pair with discharge equipment featuring a low voltage disconnect (LVD) function. Do not exceed the maximum continuous discharge current (105A).

Protections

Battery Management System

The BMS provides warnings and protections against overvoltage, undervoltage, overcurrent, short circuit, high temperature, and low temperature conditions.

Protection Mechanisms

Warnings

Troubleshooting

For further assistance, contact Renogy technical support at renogy.com/contact-us.

Specifications

Battery Specifications

Battery Charger Specifications

Maintenance & Storage

Inspection

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

Corrosion on terminals can increase resistance. Apply insulation grease to terminals for a moisture-resistant seal.

Cleaning

• Disconnect the battery and charger from the system.
• Clear debris from the battery and charger.
• Clean with a soft, lint-free cloth, dampened with water or mild soap and water if very dirty.
• Do not touch device terminals when cleaning with water. Avoid water flowing into the charger's cooling fan.
• Dry with a soft, lint-free cloth.
• Keep the area around the battery and charger clean.
• Reconnect the battery and charger to the system.

Checking Voltage

Periodically check battery voltage. If the battery is unable to be activated with a charge/discharge current greater than 1A, or if activated with a resting voltage below 40V, it may be severely overdischarged. Stop using until the fault is corrected and the battery can be charged.

Storage

• Charge the battery to 30%-50% SOC.
• Disconnect from the system.
• Store in a well-ventilated, dry, clean area between 41°F and 113°F (-5°C to 45°C).
• Avoid direct sunlight, moisture, or precipitation.
• Handle carefully to avoid impacts or pressure on the housing.
• Charge every 3-6 months to prevent overdischarge.
• Fully charge when taking out of storage.

Failure to follow storage instructions may void the warranty.

Important Safety Instructions

Renogy is not liable for damage caused by:

• Force majeure (fire, typhoon, flood, earthquake, war, terrorism).
• Misuse, abuse, neglect, improper maintenance, or use under abnormal conditions.
• Improper installation, operation, or peripheral device malfunction.
• Contamination with hazardous substances or radiation.
• Alterations to the product without Renogy's written consent.

General Safety

• Wear protective equipment and use insulated tools during installation and operation.
• Do not wear jewelry or metal objects near the battery and charger.
• Keep the battery and charger out of reach of children.
• Dispose of batteries and chargers according to local, state, and federal laws, using recycling channels.
• Use FM-200 or CO2 fire extinguisher for fires.
• Do not expose to flammable or harsh chemicals or vapors.
• Clean regularly.
• Keep away from strong electrostatic fields, magnetic fields, or radiation.
• Keep away from water, heat sources, sparks, and hazardous chemicals.
• Do not place in areas exposed to rain or water.
• Do not puncture, drop, crush, burn, penetrate, shake, strike, or step on the battery and charger.
• Do not open, dismantle, repair, tamper with, or modify the battery and charger.
• Do not touch terminals or connectors.
• Do not insert foreign objects into terminals.

Battery Safety

• Do not open or damage batteries. Released electrolyte is harmful and may be toxic.
• Ensure the battery charger is not connected to a power outlet before operating the battery.
• Do not place tools on top of the battery.
• Use suitable handling equipment for safe transportation.
• Do not connect the battery in series or parallel.

Battery Charger Safety

• Ensure the charger is properly grounded.
• The charger contains high-voltage components; do not disassemble or repair without authorization.
• Do not block the charger's cooling fans.
• Always disconnect the power cable and charging plug before moving the charger.
• The battery voltage must match the charger's rated voltage.

Renogy Support

For inaccuracies or omissions, visit or contact Renogy:

• Website: renogy.com/support/downloads
• Email: contentservice@renogy.com

For solar system possibilities, visit the Renogy Learning Center at renogy.com/learning-center.

For technical questions in the U.S., contact support via renogy.com/contact-us or call 1(909)2877111.

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

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

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FCC Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to two conditions: (1) no harmful interference, and (2) acceptance of any received interference. Changes not expressly approved by the responsible party may void the user's authority to operate the equipment.

This equipment has been tested and complies with limits for a Class B digital device, providing reasonable protection against harmful interference in residential installations. It generates and can radiate radio frequency energy. If not installed and used per instructions, it may cause harmful interference to radio communications. There is no guarantee that interference will not occur. If interference occurs, try correcting it by:

• Reorienting or relocating the receiving antenna.
• Increasing separation between equipment and receiver.
• Connecting to a different circuit.
• Consulting a dealer or experienced technician.

FCC Radiation Exposure Statement

This equipment complies with FCC radiation exposure limits for an uncontrolled environment. It should be installed and operated with a minimum distance of 20cm between the radiator and your body.

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