ITEM NAME:3S 40A 18650 Li-Ion Lithium Battery Charger Protection Board For Drill MotoYUSE 100% Brand New and High Quality ! Material:PCB Size:41*55*3.4mm Charging voltage: 12.6V - 13.6V Color:As Pictures Package Included:1 * Lithium Battery Protection Board Note 1: The successful start of the drill requires three 15C-20C power battery, or six 10C-15C power battery (ordinary 18650 can not start the drill !!). Note 2: strictly according to map wiring 0V, 4.2V, 8.4V, 12.6V, do not deliberately short circuit. Note 3: When the load of the motor brush is used, try to connect to the non-polar capacitor (withstand voltage above 25V, capacity 10uF-100uF) to the motor's positive and negative terminals to prevent the reverse spike from the motor. Break the MOS tube. Note 4: 3 groups of batteries in series, please ensure that the voltage of each group of batteries, if not the same, please fill each battery separately and then use in series. The The Discharge test, the voltage drop faster battery that group is poor battery.Note 1: The successful start of the drill requires three 15C-20C power battery, or six 10C-15C power battery (ordinary 18650 can not start the drill !). Break the MOS tube.