3pcs DC 14.8V / 16.8V 20A 4S Lithium Battery Protection Board BMS PCM Module For 18650 Lithium LicoO

Description: 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; 4S Li-ion18650, LiCoO2, LiMn2O4, Li(NiCoMn)O2 rechargeable batteries; 4S Lipo rechargeable batteries; High-accuracy voltage detection circuit; Terminal of the charger using high voltage device; Built-in three-stage over-current detection circuit (over-current 1, over-current 2, or load short circuit); MOS transistor can control the battery charge and discharge; Low standby current consumption. Parameter: Over charge voltage: DC 4.25-4.35V ± 0.05V Over discharge voltage: DC 2.3-3.0V ± 0.05V Max working current:10A Max peak current: 20A Working temperature: -40a - +50a Storage temperature:-40a - +80a Small current: 6uA Life cycle: 50000hours Resistance: 45m Short cut protection: protectable ,change for repair Size: 35*35*3.0mm Package Included: 3 x 4S lithium battery protection board