PGYBMS Hardware Protection Board PGY151 100A 4S LiFePO4 Power Management & Protection Module

The PGY-151 is a high-performance 4-series (4S) LiFePO₄ Battery Management System (BMS) designed for rechargeable lithium iron phosphate battery packs.
It supports a continuous charge and discharge current of up to 100A and adopts a common port design for charging and discharging.

This BMS integrates comprehensive protection functions, cell balancing, and temperature monitoring to ensure battery safety, stability, and long service life. It is suitable for energy storage and power battery applications.

Key Features:
Support for 4S LiFePO₄ battery packs
100A continuous charge & discharge current
Common port (charge and discharge share the same port)
Over-charge, over-discharge, over-current, and short-circuit protection
Dual temperature protection (external NTC + internal thermal switch)
Cell balancing function to improve battery consistency
Low power consumption design
High reliability MOSFET configuration (8 charge + 8 discharge MOSFETs)

Electrical Specifications (Typical):
Battery Type: LiFePO₄ (Lithium Iron Phosphate)
Series Configuration: 4S
Nominal Pack Voltage: 12.8V
Max Charging Voltage: 14.6V (CC-CV)
Continuous Charge Current: 100A
Continuous Discharge Current: 100A
Cell Balancing Voltage: 3.525V (typ.)
Balancing Current: 70mA (typ.)
Internal Resistance (Rds): ≤ 35 mΩ
Quiescent Current: ≤ 100 µA

Applications:
LiFePO₄ energy storage systems
Power battery packs
Backup power systems
Industrial lithium battery solutions