Renogy Core Series User manual

VERSION A0
Deep Cycle Lithium Iron Phosphate Battery
RENOGY Core Series
12.8V 100Ah
RBT12100LFP-US
USER MANUAL

Before Getting Started
The user manual provides important operation and maintenance instructions for Renogy Core Series 12.8V
100Ah Deep Cycle Lithium Iron Phosphate Battery (hereinaer 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.
zRenogy ensures the accuracy, suiciency, and the applicability of information in the user manual at
the time of printing due to continual product improvements that may occur.
zRenogy assumes no responsibility or liability for personal and property losses, whether directly and
indirectly, caused by the user’s failure to install and use the product in compliance with the user
manual.
zRenogy is not responsible or liable for any failure, damage, or injury resulting from repair attempts by
unqualified personnel, improper installation, or inappropriate operation.
zThe illustrations in the user manual are for demonstration purposes only. Details may appear slightly
dierent depending on product revision and market region.
zRenogy reserves the right to change the information in the user manual 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 © 2023 Renogy. All
rights reserved.
RENOGY and are registered trademarks of Renogy.
zAll 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.
zThe registered trademarks in the user manual are the property of Renogy. The unauthorized use of the
trademarks is strictly prohibited.
Online Manual
User Manual

Symbols Used................................................................................................................................ 1
Introduction.................................................................................................................................. 1
Key Features.................................................................................................................................. 1
SKU .............................................................................................................................................. 1
What’s In the Box?.......................................................................................................................... 2
Required Tools & Accessories .......................................................................................................... 2
Get to Know Deep Cycle Lithium Iron Phosphate Battery ................................................................... 3
Dimensions ................................................................................................................................... 3
How to Size Battery Adapter Cables?................................................................................................ 4
Fix the Battery to a Position (Optional) ............................................................................................ 4
Step 1. Plan a Mounting Site............................................................................................................ 5
Step 2. Wear Insulating Gloves ........................................................................................................ 5
Step 3. Remove the Dust Cover. ....................................................................................................... 6
Step 4. Check the Battery................................................................................................................ 6
Step 5. Run the Battery Adapter Cables Through the Insulating Sleeves .............................................. 6
Step 6. Install Battery Terminals...................................................................................................... 7
Step 7. Install the Insulating Sleeves................................................................................................ 7
Step 8. Connect the Battery to Other Devices.................................................................................... 8
How to Connect Renogy Core Batteries in Series or Parallel ............................................................... 9
Calculate Voltage and Current in Series and Parallel Connections .................................................................9
Balance Batteries Prior to Connection..............................................................................................................9
Series Connection vs. Parallel Connection — Installation Steps ...................................................................10
Battery Cell Balancing......................................................................................................................................12
Charging/Discharging Parameter Settings...................................................................................... 12
Battery Charging and Discharging Logic......................................................................................... 13
Charging Logic..................................................................................................................................................13
Discharging Logic.............................................................................................................................................14
How to Estimate the Battery SOC? ................................................................................................. 14
Battery Management System ........................................................................................................ 14
Troubleshooting .......................................................................................................................... 15
Specifications.............................................................................................................................. 16
General .............................................................................................................................................................16
Operation Parameters......................................................................................................................................16
Table of Contents

Maintenance & Storage................................................................................................................. 17
Inspection.........................................................................................................................................................17
Cleaning............................................................................................................................................................17
Checking Voltage..............................................................................................................................................17
Storage..............................................................................................................................................................17
Important Safety Instructions....................................................................................................... 18
General .............................................................................................................................................................18
Battery Safety...................................................................................................................................................18
Renogy Support........................................................................................................................... 19

— 1 —
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 for the drop-in
replacement of deep-cycle lead-acid batteries with its standard Battery Council International (BCI) group size.
Weighing only half of the 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. In addition, the reliable Battery
Management System (BMS) provides comprehensive protection to the battery.
Key Features
zUnparalleled Performance
Features a greater energy density, a deeper discharge capability, a higher round-trip eiciency, and a
faster charging speed in a smaller size over counterparts in the market.
zUncompromising Quality
Ensures an exceptional lifespan with more than 5000 cycles (80% DOD), a continuous charge/discharge
current of 100A, and a wide range of operating temperatures with the automotive grade battery cells.
zReliable Protection Mechanisms
Designed with a sturdy internal structure for RV use, and includes multiple levels of protection such as
low temperature cut-o and precise balancing through the battery management system.
zHigher Capacity than Competitors
106Ah instead of 100Ah, for a longer-lasting application.
zEasy to Expand
Upgrades to lithium batteries seamlessly with the standard BCI group sizes; up to 16 batteries in 4 series
and 4 parallels system connection delivering a maximum of 48V (51.2V) 400Ah with 20.48 kWh.
SKU
Renogy Core Series 12.8V 100Ah Deep Cycle Lithium Iron Phosphate Battery RBT12100LFP-US

— 2 —
What’s In the Box?
VERSION A0
Deep Cycle Lithium Iron Phosphate Battery
RENOGY Core Series
12.8V 100Ah
RBT12100LFP-US
USER MANUAL
Renogy Core Series 12.8V 100Ah Deep Cycle
Lithium Iron Phosphate Battery × 1
User Manual × 1
Long Terminal Bolt × 2Insulating Sleeve × 2
M8*1.25*20 mm
Make sure that all accessories are complete and free of any signs of damage.
Required Tools & Accessories
MultimeterInsulating Gloves
Wrench (7/16 inches) Battery Adapter Cables × 2
M8
10mm
10mm
10mm
Prior to installing and configuring the battery, prepare the recommended tools, components, and
accessories.
For how to size battery adapter cables, refer to “How to Size Battery Adapter Cables?” in this manual.

— 3 —
Get to Know Deep Cycle Lithium Iron Phosphate Battery
Positive Terminal (M8)
Negative Terminal (M8)
Li Handles
Dimensions
10.6 in (260 mm)
8.6 in
(211 mm)
6.9 in (169 mm)
Dimension tolerance: ±0.2 in (0.5 mm)

— 4 —
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 dierent gauge sizes.
Cable Gauge Size Ampacity Cable Gauge Size Ampacity
14 AWG (2.08 mm) 35A 2 AWG (33.6 mm) 190A
12 AWG (3.31 mm) 40A 1 AWG (42.4 mm) 220A
10 AWG (5.25 mm) 55A 1/0 AWG (53.5 mm) 260A
8 AWG (8.36 mm) 80A 2/0 AWG (67.4 mm) 300A
6 AWG (13.3 mm) 105A 4/0 AWG (107 mm) 405A
4 AWG (21.1 mm) 140A
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 to the battery from loose cables and bumps.
Recommended Components
Battery Tray Tie Down Strap Mounting Screws × 4
Alternative mounting methods are allowed to meet the requirements of specific applications.

— 5 —
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.
KEEP DRY FRAGILE VENTILATION
Charge: 32°F–131°F / 0°C–55°C
Discharge: -4°F–140°F / -20°C–60°C
10%–95%
Vent
Vent
Enclosed space
Air
cross-flow
Suicient air flow must be provided to prevent excessive heat build-up and to minimize temperature
variation between the connected batteries.
This user manual takes a battery as an example to illustrate how to install the battery.
Step 2. Wear Insulating Gloves
Insulating Gloves

— 6 —
Step 3. Remove the Dust Cover.
Step 4. 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.
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