Custom 3S 4S 40A 60A Li-ion Lithium Battery Charger Protection Board 18650 BMS For Drill Motor 11.1V 12.6V/14.8V 16.8V With Balance

Scope of application: Suitable for nominal voltage 3.7V, full voltage 4.2V lithium battery (including 18650, 26650, polymer lithium battery, no size restrictions)

Product size: 41*55*3.4mm(enhanced version)

Weight: 8.8g (enhanced version)

Charging voltage: 12.6V-13.6V

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

Continuous charging current (upper limit) : 20A

Enhanced version: Suitable for starting current below 80A, power below 130W electric drill.

Note 1: Successfully start the drill requires three 15C-20C power batteries, or six 10C-15C power batteries (ordinary 18650 can not start the drill! ! !) ; For 0V and 12.6V connections, use copper wires of more than 3mm square (no nickel sheets! ! !) .

Note 2: Wire 0V, 4.2V, 8.4V, 12.6V strictly according to the diagram, do not intentionally short circuit.

Note 3: When charging the battery, it is normal for the "430" resistance to heat, indicating that the equalization circuit is working; If the "430" resistor is also hot without charging, check whether it is connected to the wrong line.

For some customers with poor electronic foundation, please explain: do not mix good batteries with poor batteries! The closer the capacity/internal resistance of the 3 batteries, the better! (The use effect of 2 good batteries +1 poor battery = the use effect of 3 poor batteries).

4 series 16.8V 40A lithium battery protection board (with Recovery function -AUTO Recovery)

This shop is a balanced version

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

Product size: 46*60*3.4mm(balanced version)

Product weight: 10.3g(balanced version)

Charging voltage: 16.8V-18.1V

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

Continuous charging current (upper limit) : 20A

Standard version: Suitable for electric drill with starting current below 60A and power below 100W.

Enhanced version: Suitable for starting current below 80A, power below 135W electric drill.

Balanced version: suitable for starting current below 80A, power below 135W electric drill.

Note 1: Successfully start the drill requires 4 15C-20C power batteries, or 8 10C-15C power batteries (ordinary 18650 can not start the drill! ! !) .

Note 2: Wire 0V, 4.2V, 8.4V, 12.6V, 16.8V strictly according to the diagram, do not intentionally short circuit.

Note 3: With the load of the brush motor, try to parallel a non-polar capacitor (voltage 25V or more, capacity 10uF-100uF) at the positive and negative terminals of the motor to prevent the reverse peak voltage generated by the motor from interfering with the protection board or breakdown of the MOS tube.

Note 4: When connecting 4 groups of batteries in series, please ensure that the voltage of each group of batteries is the same, if not, please fill each group of batteries separately and then use them in series. In the discharge test, the group of batteries whose voltage drops faster is the differential battery.

For some customers with poor electronic foundation, the balance charge is only an auxiliary function, try not to mix the good battery with the bad battery! The closer the capacity/internal resistance of the 4 batteries, the better! (Use effect of 3 good batteries +1 poor battery = use effect of 4 poor batteries).