3S 20A Li-ion Lithium Battery 18650 Charger Protection Board PCB BMS 12.6V

3S 20A Li-ion Lithium Battery 18650 Charger Protection Board PCB BMS 12.6V

Product Code: ML-2090
Availability: In Stock
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Product Description

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


100% Brand new !

3 string 20A lipo battery protective board, comes with recovery function-auto recovery.

Enhanced version, applicable to electric drills/drill motor with starting current below 60A, power below 100W, resistive Load below 250W(with anti-interference function).

Ideal 3S 20A 3S20A li-ion lithium battery 18650 charger protection board BMS PCB 12.6V cell charging protecting module.


Charging Voltage: 12.6V~13.6V

Continuous Discharge Current (upper limit): 20A(If the cooling environment is not good, please reduce the use of load current.)

Continuous Charge Current (upper limit): 10A

Size: About 59x20x3.4mm/1.97x0.79x0.13"

Scope: Nominal voltage of 3.6V, 3.7V lithium battery(including 18650, 26650, lithium polymer battery)


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 three 10C-20C power battery, or six 5C-10C power battery(ordinary 18650 can not start the drill!!).

4. Strictly according to wiring guide 0V, 4.2V, 8.4V, 12.6V. For 0V and 12.6V cables, use copper wire of 2 square millimeters or more. Do not use nickel plates!

5. When connecting 3 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 battery group individually and reconnect it in series.

6. Do not mix good batteries with bad ones.

7. The closer the internal resistance of the three battery capacities is the better.

The product has two colors(green and blue), and the colors are delivered randomly. Same function, does not affect use.

Package Included

1 x 3S 20A Protection Board

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