ITEM NAME:New upgrade 4s/40a bms 14.8v/16.8v 18650 lithium battery protection board BX 4S 16.8V 40A lithium battery protection board (comes with recovery function-AUTO Recovery) Charging voltage: 16.8V - 18.1V Continuous charge current (upper limit): 20A Board Size: 46*60*3.4mm Continuous discharge current (upper limit): 40A (if the cooling environment is not good, please reduce the load current use) Scope: Nominal voltage of 3.6V, 3.7V lithium battery (including 18650,26650, polymer lithium battery) Upgrade version: for starting current below 80A, power 135W below the drill. Note 1: The successful start of the electric drill requires four 15C-20C power batteries, or eight 10C-15C power batteries (ordinary 18650 can not start drill! ! !). Note 2: Connect 0V, 4.2V, 8.4V, 12.6V, and 16.8V in strict accordance with the diagram. Do not intentionally short circuit. Note 3: When the battery is charged, “430†resistance heating is a normal phenomenon, indicating that the equalizing circuit is working; if the “430†resistance is also heating in the state of not charging, please check whether the wrong line is connected. Note 4: 4 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. Package: 1* 4S 4A Balance Version Protection Board.Note 1: The successful start of the electric drill requires four 15C-20C power batteries, or eight 10C-15C power batteries (ordinary 18650 can not start drill! 1 4S 4A Balance Version Protection Board. ).
