3 Series 40A 18650 Lithium Battery Protection Board 11.1V 12.6V with Balance for Drill Motor Lipo Cell Module

3 Series 40A 18650 Lithium Battery Protection Board 11.1V 12.6V with Balance for Drill Motor Lipo Cell Module

The 3 Series 40A 18650 Lithium Battery Protection Board (11.1V / 12.6V) with Balance for Drill Motors and LiPo Cell Modules offers an automatic recovery function and features integrated 10 low-resistance MOSFETs.

This board supports a continuous discharge current of up to 40A, with a 100mA balancing current, making it ideal for use in devices like electric drills, sprayers, LED lights, and low-power inverters. (Note: If the cooling environment is suboptimal, it is recommended to reduce the load current.)

Designed for 3.6V or 3.7V lithium batteries (such as 18650, 26650, and polymer Li-ion batteries), the board’s charging voltage range is 16.8V to 18.1V. It supports a continuous charge current of up to 20A, and the balanced version can handle startup currents below 80A, with a maximum power output of 135W for drills (with balancing enabled).

The module is compact, measuring approximately 46 x 60 x 3.4 mm, making it easy to install either in a tight space or directly onto the battery pack itself.

Features:

3S 11.1V 12.6V 40A 18650 lithium battery protection board (comes with recovery function-AUTO Recovery).

Application: Nominal voltage of 3.6V, 3.7V lithium battery (including 18650.26650, a polymer lithium battery).

Continuous discharge current (upper limit): 40A (if the cooling environment is not good, please reduce the load current use).

Continuous charge current (upper limit): 20A.

Suitable for the drills with starting current below 80A, power 135W below.

Specifications:

Package Includes:

1 x 3 Series 40A 18650 Lithium Battery Protection Board.

Note:

The Successful start of the drill requires a three 15C-20C power battery, or six 10C-15C power battery (ordinary 18650 cannot start the drill!!).

Strictly according to map wiring 0V, 4.2V, 8.4V, 12.6V, 16.8V, do not deliberately short circuit.

When the load of the brush motor is used, try to connect a non-polar capacitor (withstand voltage above25V, capacity 10uF-100uF) to the motor’s positive and negative terminals to prevent the reverse spike from the motor. Break the MOS tube.

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 it in series. The Discharge test, the voltage drop faster battery that group is a poor battery.