Manuals+

RENOGY Core Series Deep Cycle Lithium Iron Phosphate Battery

Model: RBT12100LFP-US

Voltage: 12.8V

Capacity: 100Ah

Version: A0

USER MANUAL

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. Read carefully before operation and save for future reference. Failure to observe instructions may result in electrical shock, serious injury, or death, or damage to the battery.

Disclaimer

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

An online manual is available.

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 standard Battery Council International (BCI) group sizes. Weighing half of lead-acid counterparts, it safely discharges 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

SKU

Renogy Core Series 12.8V 100Ah Deep Cycle Lithium Iron Phosphate Battery RBT12100LFP-US

What's In the Box?

The package includes:

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

Illustration: A diagram showing the Renogy Core Series battery, the user manual booklet, two red and black insulating sleeves, and two long terminal bolts.

Required Tools & Accessories

Tools and accessories required for installation:

ℹ️ Prior to installing and configuring the battery, prepare the recommended tools, components, and accessories.

ℹ️ For sizing battery adapter cables, refer to "How to Size Battery Adapter Cables?" in this manual.

Illustration: Diagrams of a wrench (14mm), M8 battery adapter cables, insulating gloves, and a multimeter.

Get to Know Deep Cycle Lithium Iron Phosphate Battery

Illustration: A diagram of the Renogy Core Series battery, labeling the Positive Terminal (M8), Negative Terminal (M8), and Lift Handles.

Dimensions

Illustration: Diagrams showing the battery's dimensions: 10.24 in (260 mm) length, 8.31 in (211 mm) height, and 6.65 in (169 mm) width. Dimension tolerance: ±0.2 in (0.5 mm).

How to Size Battery Adapter Cables?

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

Cable Gauge Size Ampacity Cable Gauge Size Ampacity
14 AWG (2.08 mm²)35A2 AWG (33.6 mm²)190A
12 AWG (3.31 mm²)40A1 AWG (42.4 mm²)220A
10 AWG (5.25 mm²)55A1/0 AWG (53.5 mm²)260A
8 AWG (8.36 mm²)80A2/0 AWG (67.4 mm²)300A
6 AWG (13.3 mm²)105A4/0 AWG (107 mm²)405A
4 AWG (21.1 mm²)140A

ℹ️ Values are from NEC Table 310.17 for copper cables at 194°F (90°C) and ambient temp ≤ 86°F (30°C). Cables longer than 13 feet (4000 mm) may need thicker wires to prevent voltage drop.

Fix the Battery to a Position (Optional)

Securing the battery prevents damage from loose cables and bumps.

Recommended Components

Illustration: Diagrams showing a battery tray, a tie-down strap, and mounting screws (x4).

Illustration: A diagram showing the battery being secured in a tray with a tie-down strap.

ℹ️ Alternative mounting methods are allowed to meet specific application requirements.

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

Illustration: Diagram showing ventilation airflow around the battery in an enclosed space, with labels for "Vent" and "Air cross-flow".

Icons: ?? KEEP DRY, ? FRAGILE, ?️ VENTILATION.

Operating Temperature Ranges:

Humidity: 10%-95%

⚠️ Sufficient airflow is crucial to prevent excessive heat build-up and minimize temperature variation between connected batteries.

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

Step 2. Wear Insulating Gloves

Illustration: A Renogy battery and a pair of orange insulating gloves.

Step 3. Remove the Dust Cover.

Illustration: Two diagrams showing the battery with dust covers on the terminals, and then with the dust covers removed.

Step 4. Check the Battery

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

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

⚠️ If electrolyte or powder contacts skin or eyes, flush immediately with clean water and seek medical attention.

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

Illustration: Two diagrams showing battery adapter cables being threaded through red and black insulating sleeves.

Step 6. Install Battery Terminals

Illustration: Diagram showing battery adapter cables connected to battery terminals using long terminal bolts, spring washers, and flat washers, with a torque specification of 10 N·m.

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

⚠️ Avoid short-circuiting battery terminals to prevent irreversible damage.

ℹ️ Verify polarity before wiring to prevent damage from polarity reversal.

ℹ️ Follow manufacturer's torque specifications for safe and reliable operation. Over-tightening can cause terminal 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

Illustration: Diagram showing the insulating sleeves being placed over the connected battery terminals.

Step 8. Connect the Battery to Other Devices

⚠️ Use circuit breakers, fuses, or disconnects appropriately sized by a certified electrician, licensed installer, or regional code authorities to protect electrical equipment.

For a Single Battery

Illustration: 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

Illustration: Diagram showing two Renogy batteries connected in parallel, via a battery fuse, to an Inverter, DC-DC Charger, DC Distribution Panel, and Charge Controller.

For Batteries in Series

Illustration: Diagram showing two Renogy batteries connected in series, via a battery fuse, 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

Illustration: Diagram showing four 12.8V 100Ah batteries connected in parallel, resulting in a 12.8V 400Ah system.

System VoltageSystem current
12.8VSum of the individual battery currents

Series Connection

Illustration: Diagram showing four 12.8V 100Ah batteries connected in series, resulting in a 48V (51.2V) 100Ah system.

System VoltageSystem current
Sum of the individual battery voltages100A

⚠️ Do not connect batteries with different chemistries, capacities, voltages, brands, or models in parallel or series, as this can damage batteries, devices, and pose safety risks.

⚠️ Avoid connecting batteries purchased more than six months apart, as performance may degrade.

ℹ️ Cables between batteries should be of equal length for optimal performance.

ℹ️ You can connect up to 8 batteries in parallel or 4 batteries in series.