Specifications:
Over Charge Voltage:4.25-4.35v±0.05v
Over Discharge Voltage: 2.3-3.0v±0.05v
MAX Operating Current: 5-6A
Max instantaneous current: 10A
Working Temperature: -40~+50 Celsius
Storage Temperature:-40~+80 Celsius
Static current: less than 6uA
Resistance: less than 45mΩ
Charging Voltage: 16.8-17V
Short circuit protection: Can be protected, charge recovery required
Size: 67mm x 16mm x 1mm/ 2.64″ ×0.63″×0.04″(L x W x H)
14.8V (Li-ion 18650 or li-ion battery rated voltage)
16.8V (Li-ion battery full charge voltage)
14.4V ( Lipo battery pack rated voltage)

Attention:
Strictly according to the diagram wiring: B+: connected battery positive, B1: the connect point between battery 1 and battery 2, B2: connect the point between battery2 and battery 3 , B3: Connect the point between battery 3 and battery 4, B-: connect to battery negative end , P+: connection charge / discharge positive, P-: connection charge / discharge negative. Otherwise it will cause damage to the chip.
Do not mix the good battery and poor battery to use.
The internal resistance of 3 battery capacity are closer will be better.

Package inlcuded:
2Pcs 4S 5A lithium Battery Protection Board