4S 40A 14.8V 16.8V BMS Battery Management System PCM PCB for 4 Packs Lithium LicoO2 Limn2O4 18650 Battery - with Balancer for Drill or Motors

Description:

• This board is suitable for high power electronic tools, like screwdrivers and drills.

• The above 3A device, means the battery discharge rate is more than 3C. 1C rated battery, 2000mah equals 2ah*1=2A max working current. 3C rated battery means 2ahx3=6A Max working current.

• High-accuracy voltage detection circuit; 

• The terminal of the charger using a high voltage device;

• Built-in three-stage over-current detection circuit (over-current 1, over-current 2, or load short circuit); 4) MOS transistor can control the battery charge and discharge; 5) low standby current consumption. 4S LI-ION BMS Parameters:

Specification:

• Over Charge Voltage:4.25-4.35v±0.05v

• Over-Discharge Voltage: 2.3-3.0v±0.05v

• Max working current:20A

• Max Peak Current:40A

• Working Temperature:-40°C+50°C

• Storage Temperature:-40°C +80°C

• Small current:6uA

• Life cycle:50000hours

• Resistance:45mΩ

• Short cut Protection: yes, change for repair

• Charging voltage range:: 16.8V - 18.1V with Balancing function

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

• Continuous discharge current (upper limit): 40A (if the cooling environment is not good, please reduce the load current use) Continuous charge current (upper limit): 20A 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