3S 100A LiFePO4 BMS Circuit Board is a high-current battery management system designed for 3 series Lithium Iron Phosphate (LiFePO4) battery packs. This module provides reliable protection for 9.6V nominal battery systems used in electric vehicles, solar storage, power tools, robotics, and high-power DIY applications. Available in Bangladesh from BDTronics, this BMS ensures safe charging, discharging, and balanced operation of LiFePO4 battery packs.

This 3S 100A BMS module is specifically designed for 3.2V LiFePO4 cells, not for 3.6V or 3.7V lithium-ion batteries. BDTronics offers this BMS solution for engineers and makers who require stable high-current battery protection in Bangladesh.

Features:

• Designed for 3S LiFePO4 battery pack (9.6V nominal)

• Supports high current up to 100A for charge and discharge

• Overcharge protection for each individual cell

• Over-discharge protection to prevent deep discharge damage

• Built-in cell balancing for improved battery life

• Short circuit protection with ultra-fast response

• Temperature protection for safe operation

• Disconnect protection for system safety

• High current MOSFET design for stable performance

• Suitable for EV battery packs, solar systems, and power tools

• Long cycle life support for LiFePO4 batteries

• Reliable performance for high load applications

• Available from BDTronics Bangladesh for electronics and battery projects

Specifications:

• Battery type: LiFePO4 (Lithium Iron Phosphate)

• Configuration: 3S (3 cells in series)

• Nominal voltage: 9.6V (3.2V × 3)

• Charging voltage: 10.95V (3.65V × 3)

• Overcharge protection voltage (per cell): 3.61V – 3.69V

• Overcharge protection delay: 1.5 – 2.5 seconds

• Over-discharge protection voltage (per cell): 2.27V – 2.43V

• Over-discharge recovery voltage: 2.45V – 2.65V

• Maximum charge current: 60A

• Maximum discharge current: 100A

• Overcurrent protection: 100A

• Balance current: 50mA

• Balance voltage accuracy: 3.355V – 3.455V

• Short circuit protection: Yes

• Short circuit delay: 100 – 600 µS

• Short circuit recovery: Load disconnect required

• Temperature protection: Yes

• Disconnect protection: Yes

How to Use:

• Connect battery cells in series (3S configuration)

• Connect B- to battery negative terminal

• Connect B1, B2 taps to intermediate cell junctions

• Connect B+ to battery positive terminal

• Connect P+ and P- to load and charger terminals

• Ensure correct wiring before powering the system

• Use only with LiFePO4 3.2V cells, not lithium-ion 3.7V cells

• Charge battery pack using appropriate 10.95V LiFePO4 charger

• Avoid exceeding rated current limits for safe operation

Application Areas:

• Electric vehicle battery packs (e-bike, e-rickshaw)

• Solar energy storage systems

• High power battery backup systems

• Power tools battery packs

• Robotics and automation systems

• RC hobby battery systems

• DIY battery pack projects

• Industrial battery management systems

Package Include:

• 1x 3S 100A LiFePO4 BMS Battery Protection Module

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