Scope of application: Lithium batteries with nominal voltage of 3.6V and 3.7V (including 18650, 26650, polymer lithium batteries) 3S 20A Li-ion Lithium Battery Protection Board 18650 26650 Charger PCB BMS Protection Board 12.6V Cell Module-AUTO Recovery Charging voltage: 12.6V - 13.0V Continuous discharge current (upper limit): 20A (if the heat dissipation environment is not good, please reduce the load current), continuous charging current (upper limit): 10A Applicable electric drill: It is suitable for electric drills with starting current below 40A and power below 65W.

Note:

1. Successful start of the drill requires three 15C-20C power batteries, or six 10C-15C power batteries (ordinary 18650 can not start the drill)

2. The 0V and 12.6V connecting wires use copper wires of 2mm2 or more, and the shorter the length, the better. Strictly follow the diagram wiring 0V, 4.2V, 8.4V, 12.6V, do not intentionally short circuit.

3. When using a brush motor type load, a capacitor (10uF-1000uF) must be connected in parallel with the positive and negative terminals of the motor to prevent the reverse spike voltage generated by the motor from interfering with the protection board or breaking through the MOS tube.

4. When connecting 3 sets of batteries in series, please ensure that the voltage of each set of batteries is the same. If they are different, please fill each set of batteries separately and use them in series. In the discharge test, the battery with a faster voltage drop is a poor battery.

5. Do not mix good battery and poor battery. The capacity/internal resistance of the three groups of batteries is as close as possible! (The effect of 2 good batteries + 1 poor battery = 3 poor battery usage)

Package Includes: 

5 * 3S 20A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board