4S 100A 12Volt LFB (LiFePO4) BMS PCB Board

The protection board offers high-current capability with reliable performance and built-in balance function. It supports same port and different port configurations, making it flexible for multiple use cases. Built with 15 ultra-low resistance MOSFETs (8 for discharge, 7 for charging), it can handle up to 60A in same port mode and up to 80A discharge in different port mode.

Note: This board is only compatible with LiFePO4 cells (3.2V). Do not use with Li-ion, LCO (3.7V), or ternary lithium batteries.

Features:

•  Compact and Lightweight

•  Ideal for LiFePO4 battery packs

• Easy to install and connect

•  Low standby power consumption

•  Supports balance charging

•  Flexible for both same port and different port use

•  High current MOS protection design

Specifications:

• Battery Type: LiFePO4 (3.2V per cell)

• Configuration: 4S (12.8V)

• Charge Voltage: 14.6V

• Overcharge Protection Voltage (Single Cell): 3.61 – 3.69V

• Overcharge Recovery Voltage: 3.5 – 3.6V

• Overcharge Delay: 1.5 – 2.5 seconds

• Over-discharge Protection Voltage: 2.27 – 2.43V

• Over-discharge Recovery Voltage: 2.45 – 2.65V

• Over-discharge Delay: 0.5 – 1.5 seconds

• Overcharge Current Protection: 100A

• Over-discharge Current Protection: 100A

• Temperature Protection: Yes (temperature interface available)

• Disconnect Protection: Yes

• Short Circuit Protection: Yes

• Short Circuit Delay: 100 – 600 µs

• Short Circuit Recovery: Auto off-load release

• Discharge Current (Contact): 80A

• Discharge Current (Continuous): 60A

• Charge Current: 60A

• Balance Function: Yes (Passive)

• Balance Current: Approx. 50mA

• Balance Voltage Accuracy: 3.355 – 3.455V

Applications:

• Bike Self Start
• DIY LiFePO4 battery packs
•  Solar storage systems
• E-bikes, scooters, tools
• Small off-grid power backups
• Inverter battery systems