4S 50A Lithium Battery BMS Balance Module

Product Description:

The 4S 50A Lithium Battery BMS Balance Module provides robust protection and balancing for lithium battery packs. Designed for high-performance applications, this module includes comprehensive safety features and thermal management capabilities.

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