4S 50A Lithium Battery BMS Balance Module

The 4S 50A Lithium Battery BMS Balance Module is a high-performance device engineered to offer robust protection and balancing for lithium battery packs. This module is equipped with an array of safety features and thermal management capabilities to ensure optimal performance.

Protection Parameters:

• Cell Overcharge Protection Voltage: 4.25V ± 0.025V per cell
• Cell Overcharge Recovery Voltage: 4.15V ± 0.05V per cell
• Overcharge Protection Delay: 1 second ± 200 ms
• Cell Over-discharge Protection Voltage: 2.7V ± 0.05V per cell
• Cell Over-discharge Recovery Voltage: 3.0V ± 0.1V per cell
• Over-discharge Protection Delay: 1 second ± 200 ms
• Discharge Over-current Protection: 70A
• Discharge Over-current Protection Delay: 100 ms ± 50 ms
• Short Circuit Protection: Yes
• Short Circuit Protection Delay: 250 μs ± 50 μs
• Short Circuit Recovery Mode: Disconnects output voltage to recover from short circuits

Current Specifications:

• Discharge Current: 50A (For currents exceeding 20A, add a passive cooler and fan to the back of the PCB to increase current transition capacity.)
• Charge Current: 50A (For currents exceeding 20A, add a passive cooler and fan to the back of the PCB to increase current transition capacity.)

Balancing Function:

• Balancing Function: Yes
• Balancing Activation Voltage: 4.18V ± 0.025V
• Balancing Current: 55mA

Temperature Protection:

• Power Failure Protection: Yes
• Temperature Protection: Yes (Requires external 10K ohm NTC thermistor)
• Charge Low Temperature Protection: -7°C
• Charge High Temperature Protection: 50°C
• Discharge Low Temperature Protection: 70°C