PGYBMS Hardware Protection Board PGY035 15A 4S LiFePO4 Power Management & Protection Module

The PGY035 4S 20A BMS protection board is designed for monitoring and protecting 4-series LiFePO₄ battery packs.
It provides stable and reliable protection functions to prevent battery damage caused by overcharge, over-discharge, over-current, and short circuit, ensuring safe operation and extended battery life.

Electrical Specifications:
Battery Configuration: 4S (LiFePO₄)
Nominal Pack Voltage: 12.8V
Maximum Charge Voltage: 14.6V
Continuous Discharge Current: 20A
Recommended Charge Current: ≤8A
Cell Nominal Voltage: 3.2V

Port Configuration:
Common Port Design: Charge and discharge share the same negative terminal
Cell Voltage Monitoring: Individual cell sensing via balance connector
Control Method: Hardware protection IC solution
Mechanical & Environmental Specifications
PCB Dimensions: 60 × 32 × 1.6 mm
Operating Temperature: -20°C to +65°C
Storage Temperature: -40°C to +90°C

Application Scenarios:
LiFePO₄ battery packs (12.8V systems)
Energy storage systems
Backup power systems
Electric mobility and industrial equipment
DIY battery pack projects