4S 20A Battery Charging + Protection Module

Features:

• 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.

• 4s Li-ion BMS parameters:

• overcharge voltage:4.25-4.35v ±0.05v

• over-discharge voltage: 2.3-3.0V 0.05v

• max working Current:10a

• max peak current:20A

• working temperature:-40---+50°C

• storage temperature:-40-- +80°C

• small Current:6ua

• life cycle:50000 hours

• resistance:45m

• shortcut protection: yes, change for repair

• size:35*35*3.0mm

Specification:

• Charging voltage range:: 16.8V

• Over-discharge recovery voltage: 2.5v ± 0.05v, over-discharge-delay-time: 144ms

• Maximum Peak current: 20A, Maximum Working current: 10A, Static current: less than 8uA

• Resistance: less than 4mΩ; 4 series 18650 battery 16.8V 16V 14.8V 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)

• Short circuit protection: protect and automatic recovery, Over discharge protection: yes, over-current-protection: yes

  
  

BMS solder instruction:

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 4sLi-ion 18650, licoo2, limn2o4, li(NiCoMn)o2   rechargeable batteries 4s lipo rechargeable batteries.