5pcs BMS 4S 25A 16.8V Battery Protection Board for Lithium Battery Protection Circuit Charging Board Module Integrated Circuits.

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
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
18650 Lithium Battery Protection Board:Charging Current: 25A;Charging Voltage : 16.8V for 4S BMS Board.
Overcharge protect current: 60A;Over-discharge protect current: 60A;Over-discharge protectdelay: 0.5 – 1.5S.
Before installing the protection board,the voltage difference between each battery is not higher than 0.05V, the internal resistance is not more than 5mΩ, the difference of the capacitance is less than 30mAh
When connecting 2 sets of batteries in series, please ensure that the voltage of each set of batteries is the same. If they are different, please fill each set of batteries separately and use them in series.
Noted:This Protective Plate Cannot be used for Lithium Iron Phosphate Batteries. Lithium Battery Protection Board is Strictly Prohibited to be Used in Series.