【4S40A】4S 40 A 18650 Lithium Li-ion Battery Protection Board; 【Design compact】Charging Voltage: 16.818; 1V; Continuous Discharge Current upper limit: 40AIf the cooling environment is not good, please reduce the use of load current; ;Continuous Charge Current upper limit: 20A;Size: About 45x55x3.4mm/1.8x2.2x0.13;Scope: Nominal voltage of 3.6V, 3.7V lithium batteryincluding 18650, 26650, lithium polymer battery;
【Easy operation-1】 1; Please allow tiny size deviations due to human measurement; 2; This item is an enhanced version BMS PCB without any equalized charging;
3; The successful start of the drill requires four 10C-20C power battery, or eight 5C-10C power batteryordinary 18650 can not start the drill; 【Easy operation-2】4; Strictly according to wiring guide 0V, 4.2V, 8.4V, 12.6V, 16.8V, do not touch any components on the board while soldering the wire to avoid short circuit;
5; When soldering the battery for the first time or when charging, as long as a single battery exceeds 4.2V, the 430 resistor will heat up and discharge stopping heating when discharged to 4.19V or so; If the 430 resistor is severely heated it's too hot to touch, please check if the wrong line is connected; 【Easy operation-3】6;
When connecting 4 groups of batteries in series, please ensure that the voltage of each group of batteries is the same; If they are different, please charge each group of batteries individually and reconnect it in series; In the discharge test, the battery with a faster voltage drop is a poor battery.
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