Renogy Core Series Deep Cycle Lithium Iron Phosphate Battery

Before Getting Started

This user manual provides important operation and maintenance instructions for the Renogy Core Series 12.8V 100Ah Deep Cycle Lithium Iron Phosphate Battery (referred to as 'battery'). Please read it carefully before operation and save it for future reference. Failure to observe instructions or precautions may result in electrical shock, serious injury, or death, or damage to the battery.

Renogy ensures the accuracy and applicability of information at the time of printing, but product improvements may occur. Renogy is not liable for losses caused by failure to install or use the product according to the manual, or for issues arising from unauthorized repairs, improper installation, or operation.

Illustrations are for demonstration purposes and may vary slightly. Renogy reserves the right to change manual information without notice. For the latest version, visit renogy.com.

Disclaimer

Renogy Core Series 12.8V 100Ah Deep Cycle Lithium Iron Phosphate Battery User Manual © 2023 Renogy. All rights reserved. RENOGY and its logo are registered trademarks of Renogy. All content is subject to copyright and intellectual property rights of Renogy and its licensors. Unauthorized reproduction or copying is prohibited.

Online Manual

Scan the QR code to access the online user manual.

[Illustration of a person holding a smartphone displaying a QR code labeled 'User Manual'.]

Table of Contents

The table of contents outlines the sections within this manual, including Symbols Used, Introduction, Key Features, SKU, What's In the Box, Required Tools & Accessories, Battery Details, Dimensions, Cable Sizing, Mounting, Installation Steps, Series/Parallel Connections, Charging/Discharging, Troubleshooting, Specifications, Maintenance & Storage, Safety Instructions, and Renogy Support.

Symbols Used

• WARNING: Indicates a potentially dangerous condition that 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 of the same BCI group size. It is half the weight of lead-acid counterparts, can be safely discharged to 100% Depth of Discharge (DOD), and offers twice the energy. Manufactured with automotive-grade cells, it features high safety standards and an extended 5000+ cycle life, supported by a reliable Battery Management System (BMS) for comprehensive protection.

Key Features

• Unparalleled Performance: Higher energy density, deeper discharge capability, improved round-trip efficiency, and faster charging in a compact size.
• Uncompromising Quality: Exceptional lifespan (>5000 cycles at 80% DOD), 100A continuous charge/discharge current, and wide operating temperature range due to automotive-grade cells.
• Reliable Protection Mechanisms: Sturdy internal structure for RV use, with multiple protection levels including low-temperature cut-off and precise balancing via the BMS.
• Higher Capacity than Competitors: Offers 106Ah capacity for extended application duration.
• Easy to Expand: Seamlessly integrates with standard BCI group sizes. Supports system expansion up to 16 batteries (4 series, 4 parallels) for a maximum of 48V (51.2V) 400Ah and 20.48 kWh.

SKU

What's In the Box?

The package includes:

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

[Illustration showing the battery, user manual, two insulating sleeves, and two long terminal bolts.]

NOTE: Ensure all accessories are complete and free of damage.

Required Tools & Accessories

The following tools and accessories are recommended for installation:

• Wrench (7/16 inches or 10mm)
• Battery Adapter Cables × 2
• Insulating Gloves
• Multimeter

[Illustration of a 10mm wrench, two battery adapter cables (red and black), a pair of insulating gloves, and a multimeter.]

NOTE: Prepare all recommended tools, components, and accessories before installation. Refer to "How to Size Battery Adapter Cables?" for cable sizing guidance.

Get to Know Deep Cycle Lithium Iron Phosphate Battery

The battery features:

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

[Diagram of the Renogy Core Series 12.8V 100Ah battery showing its positive and negative terminals (M8) and lift handles.]

Dimensions

The battery dimensions are:

• Length: 10.6 inches (260 mm)
• Width: 6.9 inches (169 mm)
• Height: 8.6 inches (211 mm)

[Diagram showing the battery's length, width, and height measurements.]

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

How to Size Battery Adapter Cables?

Use appropriately sized Battery Adapter Cables based on the expected load. The table below provides copper cable ampacities for different gauge sizes:

These values are from NEC Table 310.17 for copper cables rated at 194°F (90°C) and ambient temperatures up to 86°F (30°C). Cables longer than 13 feet (4000 mm) may require thicker wires to prevent excessive voltage drop.

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 × 4

[Illustrations of a battery tray, tie-down strap, and mounting screws.]

[Diagram illustrating the use of a battery tray, tie-down strap, and mounting screws to secure the battery.]

NOTE: Alternative mounting methods are permitted to meet specific application requirements.

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, which can cause leakage, self-discharge, or short-circuiting.

[Diagram showing a battery in an enclosed space with arrows indicating air cross-flow for ventilation. Icons represent 'KEEP DRY', 'FRAGILE', and 'VENTILATION'.]

Operating Temperature Ranges:

• Charge: 32°F - 131°F (0°C - 55°C)
• Discharge: -4°F - 140°F (-20°C - 60°C)
• Relative Humidity: 10% - 95%

CAUTION: Sufficient airflow is crucial to prevent excessive heat build-up and minimize temperature variations between connected batteries.

NOTE: This manual uses a battery as an example for installation illustration.

Step 2. Wear Insulating Gloves

Always wear insulating gloves when working with the battery.

[Illustration of a hand wearing insulating gloves next to a Renogy battery.]

Step 3. Remove the Dust Cover.

[Diagram showing the battery with its dust cover, and an arrow pointing to the battery with the dust cover removed.]

Step 4. Check the Battery

Inspect the battery for visible damage such as cracks, dents, or 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. If contact occurs with skin or eyes, flush immediately with clean water and seek medical attention.

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

[Diagram showing battery adapter cables being threaded through insulating sleeves.]

Step 6. Install Battery Terminals

Install the battery terminals using the provided Long Terminal Bolts, Spring Washer, and Flat Washer.

[Diagram showing the components for terminal installation: Long Terminal Bolts, Spring Washer, Flat Washer, Battery Adapter Cable, and the battery terminals.]

Torque Specification: 10 N·m

[Diagram illustrating the installation of the battery terminal with washers and bolt, showing the torque specification.]

CAUTION: Ensure the cable lug and terminal surface are in contact. Do not place washers between the lug and terminal to avoid high resistance and heating.

WARNING: Avoid short-circuiting battery terminals to prevent irreversible damage.

CAUTION: Verify polarity before wiring to prevent damage from polarity reversal.

NOTE: Follow manufacturer's recommended torque specifications. Over-tightening can cause breakage; loose connections can lead to meltdown or fire. Use Long Terminal Bolts for multiple cable lugs on a single terminal.

Step 7. Install the Insulating Sleeves

[Diagram showing the installation of insulating sleeves over the battery terminals after connection.]

Step 8. Connect the Battery to Other Devices

CAUTION: Use appropriately sized circuit breakers, fuses, or disconnects installed by a certified electrician or licensed installer to protect all electrical equipment.

For a Single Battery

[Diagram showing a single Renogy battery connected via a battery fuse to an inverter, DC-DC charger, DC distribution panel, and charge controller.]

For Batteries in Parallel

[Diagram showing multiple Renogy batteries connected in parallel via battery fuses to an inverter, DC-DC charger, DC distribution panel, and charge controller.]

For Batteries in Series

[Diagram showing multiple Renogy batteries connected in series via battery fuses to an inverter, DC-DC charger, DC distribution panel, and charge controller.]

How to Connect Renogy Core Batteries in Series or Parallel

Calculate Voltage and Current in Series and Parallel Connections

Parallel Connection (Example: 12V(12.8V) 400Ah)

[Diagram illustrating four 12.8V 100Ah batteries connected in parallel: positive terminals connected together, and negative terminals connected together.]

• System Voltage: 12.8V
• System Current: Sum of individual battery currents

Series Connection (Example: 48V(51.2V) 100Ah)

[Diagram illustrating four 12.8V 100Ah batteries connected in series: positive of one to negative of the next.]

• System Voltage: Sum of individual battery voltages
• System Current: 100A

WARNING: Do not connect batteries of different chemistries, capacities, voltages, brands, or models in parallel or series. This can cause damage and safety risks.

CAUTION: Avoid connecting batteries purchased more than six months apart, as performance may degrade over time.

NOTE: Ensure cables between batteries are of equal length for balanced operation. Up to 8 batteries can be connected in parallel, or 4 in series.

Balance Batteries Prior to Connection

Balancing reduces voltage differences and optimizes performance. Follow these steps:

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

[Diagram showing a single Renogy battery connected to a DC-DC charger and charge controller via a battery fuse, illustrating the charging step.]

Step 2: Use a voltmeter to measure the voltage of each battery. Keep the voltage difference below 0.1V.

[Illustration showing a multimeter measuring a battery's voltage, displaying 13.5V.]

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

[Diagram showing multiple batteries connected in parallel, with a timer icon indicating 12-24 hours.]

NOTE: Periodically rebalance battery voltages every six months. Slight differences may occur due to chemistry, capacity, temperature, or usage.

Series Connection vs. Parallel Connection — Installation Steps

Use suitable busbars for series and parallel connections to handle high currents and distribute power efficiently. Connection methods are for reference; optimal approach depends on specific factors.

Parallel Connection

[Diagram showing two batteries connected in parallel using busbars.]

Series Connection

[Diagram showing two batteries connected in series using busbars.]

Parallel & Series Connection

[Diagram showing multiple batteries connected in parallel and series configurations.]

Battery Cell Balancing

The battery uses a bypass circuit for cell balancing. During charging, if the highest-voltage cell group reaches the balancing start voltage and exceeds the set voltage difference with the lowest-voltage group, a switch closes to shunt current around the highest-voltage group via a bypass resistor until the difference is reduced. Cell balancing occurs only during charging to minimize energy loss.

Charging/Discharging Parameter Settings

Charge

Discharge

NOTE: Parameters apply to 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 arrive with a partial State of Charge (SOC). It is crucial to fully charge it before initial use. If the battery shuts off due to low SOC, disconnect loads and charge it immediately to prevent irreversible damage. Follow manual instructions for optimal performance and longevity.

Charging Logic

The standard charging process involves constant current (50A) until voltage reaches 14.4V, followed by constant voltage (14.4V) with tapering current. Charging is complete when current drops below 5A (tail current). This process typically takes 2.5 hours and requires temperatures between 32°F and 131°F (0°C - 55°C). Float charging helps balance cells.

[Graph illustrating Constant Current and Constant Voltage charging phases, showing current (I/A) vs. voltage (U/V) with key values 5A, 50A, and 14.4V.]

NOTE: Lithium batteries are compatible with MPPT, AC, and DC-DC chargers. Set charge/boost/bulk voltage to 14.4V (±0.2V).

WARNING: Do not overcharge or overdischarge. Do not charge below 32°F (0°C) or discharge above 140°F (60°C). Use only chargers compatible with LiFePO4 batteries. Do not exceed the maximum continuous charge current (100A).

Discharging Logic

During standard discharge, the battery delivers a constant current of 50A until voltage drops to 10V. Safe discharging requires battery temperatures between -4°F (-20°C) and 131°F (60°C).

NOTE: Pair the battery with equipment featuring a Low Voltage Disconnect (LVD) function for optimal usage.

WARNING: Do not connect large loads when the battery is low. Do not exceed the maximum continuous discharge current (100A).

How to Estimate the Battery SOC?

The State of Charge (SOC) is estimated based on resting voltage after 30 minutes of inactivity. Values are approximate and may vary slightly between batteries.

Battery Management System

The BMS provides warnings and protections against overvoltage, undervoltage, overcurrent, short circuit, high temperature, and low temperature conditions. Refer to the table for trigger and recovery conditions:

Troubleshooting

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

Specifications

General

Operation Parameters

Maintenance & Storage

Inspection

Perform regular inspections:

• Examine the battery housing and terminals for cleanliness, dryness, and absence of corrosion.
• Check battery cables and connections; replace damaged cables and tighten loose connections.

NOTE: Corrosion around terminals can increase resistance. Apply insulation grease to terminals for moisture resistance.

Cleaning

Clean the battery at regular intervals:

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

Checking Voltage

Periodically check battery voltage. If the battery cannot be activated with a current >1A or shows a resting voltage <10V, it may be severely overdischarged. Stop use until corrected and charged.

Storage

Ensure good condition during storage:

• Charge the battery to 30% - 50% SOC.
• Disconnect from the system.
• Store in a well-ventilated, dry, clean area between -13°F (-25°C) and 149°F (65°C).
• Avoid direct sunlight, moisture, or precipitation.
• Handle carefully to prevent impacts or pressure on the housing.
• Charge every 3-6 months to prevent overdischarge.
• Fully charge when taking out of storage.

Important Safety Instructions

General

• Wear protective equipment and use insulated tools during installation/operation. Remove jewelry.
• Keep the battery out of reach of children.
• Dispose of batteries according to local, state, and federal regulations; use recycling channels.
• Use FM-200 or CO2 fire extinguisher for fires.
• Do not expose to flammable chemicals or vapors.
• Clean the battery regularly.
• Cable length should not exceed 10 meters to avoid voltage drop.
• Cable specifications in quick guides account for <3% voltage drop and may not cover all configurations.
• Avoid strong electrostatic fields, magnetic fields, or radiation.

Battery Safety

• Keep 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 terminals or connectors.
• Ensure charger/controller is disconnected before working on the battery.
• Disconnect loads before connecting/disconnecting terminals.
• Do not place tools on the battery.
• Use suitable handling equipment for transportation.
• Do not insert foreign objects into terminals.

Renogy Support

For inaccuracies or omissions, visit renogy.com/support/downloads or contact contentservice@renogy.com.

For technical questions in the U.S., contact Renogy technical support at renogy.com/contact-us or call 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 two conditions: (1) it may not cause harmful interference, and (2) it must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and complies with Class B digital device limits, designed for reasonable protection against harmful interference in residential installations. It generates radio frequency energy and may cause interference if not installed per instructions. If interference occurs, try orienting/relocating the antenna, increasing separation, using a different circuit, or consulting a technician.

FCC Radiation Exposure Statement

This equipment complies with FCC radiation exposure limits for uncontrolled environments. Install and operate with at least 20cm separation between the radiator and your body.

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Renogy reserves the right to change the contents of this manual without notice.

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