3S 20A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board 12.6V Cell 59x20x3.4mm Module

3S 11.1V 12V 12.6V 18650 lithium battery charging protection board

BMS 3-series 12.6V 20A lithium battery protection board (with built-in recovery function-AUTO Recovery)

This product is an enhanced version: suitable for electric drills with a starting current of less than 60A.

3S 12.6V 20A lithium battery protection board (with built-in recovery function-AUTO Recovery)

● Scope of application: lithium batteries with nominal voltage of 3.6V and 3.7V (including 18650, 26650, polymer lithium batteries)

● Product size: 59*20*3.4mm

● Product weight: 4.3g

● 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

● Standard version: suitable for electric drills with starting current below 40A and power below 65W.

● Enhanced version: suitable for electric drills with starting current below 60A and power below 100W.

Note 1: To successfully start the electric drill, you need 3 15C-20C power batteries, or 6 10C-15C power batteries (ordinary 18650 cannot start the electric drill!!!)

Note 2: Strictly follow the wiring diagram for 0V, 4.2V, 8.4V, and 12.6V, and do not deliberately short-circuit.

Note 3: When there is a load such as a brush motor, a capacitor (10uF-1000uF) must be connected in parallel to 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 down the MOS tube.

Note 4: When connecting 3 groups of batteries in series, please ensure that the voltage of each group of batteries is the same. If not, please fully charge each group of batteries separately and then use them in series. . .

During the discharge test, the group of batteries with a faster voltage drop is a poor battery.

         For some customers with poor electronic foundation, please note: Never mix good batteries with bad batteries! The closer the capacity/internal resistance of the three groups of batteries, the better! (The effect of using 2 good batteries + 1 bad battery = the effect of using 3 bad batteries).