DollaTek 4S 16.8V 40A 18650 Charger PCB BMS Protection Board Li-ion Lithium Battery Charger Lipo Cell Module for Drill Motor with Balancer

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  • For connecting cables, use copper wire over 3 square millimeters, the shorter the better (can not use nickel plate!!!).
  • MOS transistor can control the battery charge and discharge, low standby current consumption.

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