RENOGY Core Series

Before Getting Started

The user manual provides important operation and maintenance instructions for the Renogy Core Series 12.8V 100Ah Deep Cycle 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.

• Renogy ensures the accuracy, sufficiency, and applicability of information in the user manual at the time of printing due to continual product improvements.
• Renogy assumes no responsibility or liability for personal and property losses caused by the user's failure to install and use the product in compliance with the user manual.
• Renogy is not responsible or liable for any failure, damage, or injury resulting from repair attempts by unqualified personnel, improper installation, or inappropriate operation.
• Illustrations are for demonstration purposes only; details may appear slightly different depending on product revision and market region.
• Renogy reserves the right to change information without notice. For the latest user manual, visit renogy.com.

Disclaimer

Renogy Core Series 12.8V 100Ah Deep Cycle Lithium Iron Phosphate Battery User Manual © 2024 Renogy. All rights reserved.

RENOGY and its logo are registered trademarks of Renogy.

• All information is subject to copyright and intellectual property rights of Renogy and its licensors. The user manual may not be modified, reproduced, or copied without prior written permission.
• Registered trademarks are the property of Renogy. Unauthorized use is strictly prohibited.

Symbols Used

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

[!] WARNING: Indicates a potentially dangerous condition which could result in 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.

Introduction

The Renogy Core Series 12.8V 100Ah Deep Cycle Lithium Iron Phosphate Battery is designed as a direct replacement for deep-cycle lead-acid batteries with its standard Battery Council International (BCI) group size. Weighing half of lead-acid counterparts, it can be safely discharged to 100% Depth of Discharge (DOD), delivering twice the energy. Manufactured with automotive-grade battery cells, it features high safety standards and an extended 5000+ cycle life. The reliable Battery Management System (BMS) provides comprehensive protection.

Key Features

• Unparalleled Performance: Greater energy density, deeper discharge capability, higher round-trip efficiency, and faster charging speed in a smaller size.
• Uncompromising Quality: Exceptional lifespan with over 5000 cycles (80% DOD), continuous charge/discharge current of 100A, and wide operating temperature range.
• Reliable Protection Mechanisms: Sturdy internal structure for RV use, with multiple levels of protection including low temperature cut-off and precise balancing via the BMS.
• Higher Capacity than Competitors: 106Ah instead of 100Ah for longer applications.
• Easy to Expand: Seamless upgrades with standard BCI group sizes; up to 16 batteries in 4 series and 4 parallel system connections, delivering a maximum of 48V (51.2V) 400Ah with 20.48 kWh.

SKU

What's In the Box?

The package includes:

• Renogy Core Series 12.8V 100Ah Deep Cycle Lithium Iron Phosphate Battery x 1
• User Manual x 1
• Insulating Sleeve x 2
• Long Terminal Bolt x 2

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

Required Tools & Accessories

• Wrench (7/16 inches)
• Battery Adapter Cables x 2
• 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 Deep Cycle Lithium Iron Phosphate Battery

The battery features:

• Positive Terminal (M8)
• Negative Terminal (M8)
• Lift Handles

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

Dimensions

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.

Fix the Battery to a Position (Optional)

Securing the battery prevents damage from loose cables and bumps.

Recommended Components

• Battery Tray
• Tie Down Strap
• Mounting Screws x 4

[NOTE] Alternative mounting methods are allowed to meet specific application requirements.

It is recommended to install the battery on the bottom. However, it can also be mounted on all sides except the top side with the terminals.

Installation Steps

Step 1. Plan a Mounting Site

For optimal performance, install the battery in a clean, cool, and dry location, free from water, oil, or dirt accumulation. Such materials can lead to current leakage, self-discharge, and short-circuiting.

Ensure adequate airflow for cooling and to minimize temperature variation between connected batteries.

Operating Temperature Ranges:

• Charge: 32°F-131°F / 0°C-55°C
• Discharge: -4°F-140°F / -20°C-60°C
• Storage: -13°F to 149°F (-25°C to 65°C)

Operation Relative Humidity: 10%-95%

[Keep Dry] [Fragile] [Ventilation]

Step 2. Wear Insulating Gloves

Wear appropriate insulating gloves before handling the battery terminals.

Step 3. Remove the Dust Cover.

Remove the protective dust covers from the battery terminals.

Step 4. Check the Battery

Inspect the battery for any visible damage, including cracks, dents, deformation, or other abnormalities. Ensure all connector contacts are clean, dry, and free of corrosion.

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

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

Step 5. Run the Battery Adapter Cables Through the Insulating Sleeves

Slide the insulating sleeves onto the battery adapter cables before connecting them to the terminals.

Step 6. Install Battery Terminals

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

[!] Avoid short-circuiting the battery terminals to prevent irreversible damage.

[!] Verify polarity before wiring to avoid damage due to polarity reversal.

[NOTE] To ensure safe and reliable operation, follow the manufacturer's recommended torque specifications (10 N·m to 12 N·m or 88.5-106.2 inch-lbs) when securing cable connections. Over-tightening can result in terminal breakage; loose connections can lead to terminal meltdown or fire. Use Long Terminal Bolts when securing multiple cable lugs on a single terminal.

Step 7. Install the Insulating Sleeves

Place the insulating sleeves over the connected terminals for protection.

Step 8. Connect the Battery to Other Devices

[!] 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: Connect the battery to the system via a battery fuse, leading to an Inverter, DC-DC Charger, DC Distribution Panel, and Charge Controller.

For Batteries in Parallel: Connect multiple batteries in parallel, each with a battery fuse, to the system components.

For Batteries in Series: Connect multiple batteries in series, each with a battery fuse, to the system components.

How to Connect Renogy Core Batteries in Series or Parallel

Calculate Voltage and Current in Series and Parallel Connections

Parallel Connection (Example: 4 batteries): Results in 12.8V (12V) and 400Ah. System voltage remains 12.8V, system current is the sum of individual battery currents.

Series Connection (Example: 4 batteries): Results in 48V (51.2V) and 100Ah. System voltage is the sum of individual battery voltages, system current remains 100A.

[CAUTION] Do not connect batteries with different chemistries, capacities, voltages, brands, or models in parallel or series, as this can cause damage and safety risks.

[CAUTION] Avoid connecting batteries purchased more than six months apart, as performance may degrade.

[NOTE] Cables between connected batteries should be of equal length for optimal performance.

[NOTE] You can connect up to 8 batteries in parallel or 4 batteries in series.

Balance Batteries Prior to Connection

Before connecting batteries in series or parallel, balance them to reduce voltage differences and optimize performance.

1. Step 1: Charge each battery individually to its full capacity using a suitable charger.
2. Step 2: Use a voltmeter to measure the voltage of each battery. The voltage difference between batteries should be less than 0.1V.
3. Step 3: Connect all batteries in parallel and allow them to rest together for 12 to 24 hours.

[NOTE] Periodically rebalance battery voltages every six months. Slight voltage differences can occur over time due to battery chemistry, capacity, temperature, and usage patterns.

Series Connection vs. Parallel Connection – Installation Steps

Suitable busbars can be used for series and parallel connections to handle high currents and distribute power efficiently.

[NOTE] Cable connection methods are for reference; optimal approach may vary based on specific situation, cable size, equipment, and environmental conditions.

Battery System Configurations:

Battery Cell Balancing

The battery uses a bypass circuit to maintain balance between each battery cell group. During charging, if the highest-voltage cell group reaches the set balancing voltage and the difference exceeds the set threshold, a switch closes to shunt charge current through a bypass resistor until the voltage difference reduces. Cell balancing is performed only during charging to avoid excessive energy loss.

Charging/Discharging Parameter Settings

Charge Parameters

Discharge Parameters

[NOTE] Parameters are for 12V (12.8V) packs. Multiply by 2 for 24V (25.6V) and by 4 for 48V (51.2V) packs.

Battery Charging and Discharging Logic

The battery may be received at a partial state of charge (SOC). Fully charge the battery before initial use. If the battery shuts off due to low SOC, disconnect it from loads and charge it to prevent irreversible damage. Follow manual instructions for optimal performance and longevity.

Charging Logic

Standard charging involves constant current of 50A until 14.4V, followed by constant voltage of 14.4V while tapering current. Charging is complete when current drops below 5A (tail current). The process typically takes 2.5 hours and requires battery temperatures between 32°F and 131°F (0°C to 55°C). Float charging helps balance cells without damage.

Charging Curve: Illustrates current tapering from 50A to 5A as voltage rises from initial to 14.4V.

[NOTE] Lithium batteries are compatible with MPPT charge controllers, AC chargers, and DC-DC chargers. Set charge voltage, boost voltage, or bulk voltage at 14.4V (±0.2V).

[!] Do not overcharge or overdischarge the battery.

[!] Do not charge below 32°F (0°C) and discharge above 140°F (60°C).

[!] Only charge with chargers compatible with lithium iron phosphate batteries.

[!] Do not exceed the maximum continuous charge current (100A).

Discharging Logic

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

[NOTE] For safe and optimal usage, pair the battery with discharge equipment featuring a low voltage disconnect (LVD) function.

[!] Do not connect large loads when the battery is running low.

[!] Do not exceed the maximum continuous discharge current (100A).

How to Estimate the Battery SOC?

SOC values are estimated based on resting voltage after 30 minutes of inactivity (not charging or discharging).

[NOTE] This table is for reference only; slight variations in battery voltage may occur.

Battery Management System

The battery is equipped with a Battery Management System (BMS) that provides warnings and protections against overvoltage, undervoltage, overcurrent, short circuit, high temperature, and low temperature conditions. Refer to the table below for triggering and recovery conditions.

Troubleshooting

[NOTE] For further assistance, contact Renogy technical support service at renogy.com/contact-us.

Specifications

General

Operation Parameters

Maintenance & Storage

Inspection

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

[NOTE] Corrosion around terminals can cause increased resistance and poor contact. Apply insulation grease to terminals for a moisture-resistant seal.

Cleaning

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

Checking Voltage

Periodically check battery voltage to assess health. If the battery is unable to activate with a current > 1A or has a resting voltage < 10V, it may be severely overdischarged. Stop using until the fault is corrected and the battery can be charged.

Storage

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

Important Safety Instructions

General Safety

The manufacturer accepts no liability for damage caused by:

• Force majeure (fire, typhoon, flood, earthquake, war, terrorism).
• Intentional or accidental misuse, abuse, neglect, improper maintenance, or use under abnormal conditions.
• Improper installation, operation, or peripheral device malfunction.
• Contamination with hazardous substances or radiation.
• Alterations without written consent.

Safety Precautions

• Wear proper protective equipment and use insulated tools during installation and operation. Do not wear jewelry or metal objects.
• Keep the battery out of reach of children.
• Do not dispose of as household waste; comply with local laws and use recycling channels.
• In case of fire, use a FM-200 or CO2 fire extinguisher.
• Do not expose to flammable or harsh chemicals or vapors.
• Clean the battery regularly.
• Cables should not exceed 10 meters to prevent voltage drop.
• Cable specifications account for critical, less than 3% voltage drop and may not cover all configurations.
• Do not expose to strong electrostatic fields, magnetic fields, or radiation.

Battery Safety

• 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.
• Ensure battery charger or charge controller is disconnected before working on the battery.
• Do not connect or disconnect terminals without first disconnecting loads.
• Do not place tools on top of the battery.
• Use suitable handling equipment for safe transportation.
• Do not insert foreign objects into the positive and negative terminals.

Renogy Support

To discuss inaccuracies or omissions, visit or contact us at:

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

For technical questions in the U.S., contact the Renogy technical support team:

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

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

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

FCC Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (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 20cm between the radiator & your body.

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