4S 40A Lithium Ion Lithium Battery Pack 18650 PCB Charger BMS Protection Board With Balance For Motor For Drilling Machine 14.8V 16.8V Lipo Module Cell4S 40A Li-ion Lithium Battery Protection Board 18650 PCB Charger BMS For Drilling Machine Motor 14.8V 16.8V Amplification Diy Electronic ModuleSpecifications:Scope of application: nominal voltage 3.6V, 3.7V lithium battery (including 18650, 26650, lithium polymer battery)Product Size: 45*55*3.4mm/1.77*2.17*0.13" (Standard Version)Product Weight: 9.8g (Standard)Charging Voltage: 16.8V - 18.1V Continuous Discharge Current (Upper Limit): 40A (If the cooling environment is not good, please reduce the load current)Continuous Charging Current (Upper Limit): 20A Weight:1. Successful commissioning of the drill bit requires four 10C-20C batteries or eight 5-10C batteries, 0V 12.6V cable and more than 3 square millimeters of copper wire (nickel cannot be used).2. Strictly follow the 0V, 4.2V, 12.6V, 16.8V wiring, do not touch any components when welding the wire, do not deliberately short circuit. Notes:1. Due to the different monitor and light effect, the actual color of the item may be slightly different from the color showed on the pictures. Thank you!2. Please allow slight measurement deviation due to manual measurement.1 X Lithium Battery Charger Protective Board[Relateproductdetail/]