18650 Battery Charge and Discharge Protection BMS PCB PCM 4S 20A Li-ion Battery Charger Protection Board 

Product Description:

20A 4S Protection Board

• FOR Li-POLYMER LiMnO Protect Parameter (3.6V / 3.7V)
• Single Cell overcharge protect voltage: 4.23-4.28V
• Single Cell overcharge rotect recover voltage: 4.08-4.18
• overcharge protect delay: 0.5-1.5S
• Single Cell over-discharge protect voltage: 2.72-2.88V
• Single Cell over-discharge rotect recover voltage: 2.9-3.1V
• overcharge protect current: 60A
• over-discharge protect current: 60A
• over-discharge protectdelay: 0.5-1.5S
• temperature protect: YES
• disconnect protect: YES
• shortage protect: YES
• shortage delay: 100-600μS
• shortage protect recover: YES
• Charging current: 25A
• discharging current: 25A
• charging voltage: 12.6V for 3S, 16.8V for 4S, 21V for 5S BMS board