Description

3/4 strings 11.1V/12.6V18650 lithium battery protection board balanced/enhanced startable electric drill 40/60A

 

Graphic details

Product name: 3-series 12.6V 40A lithium battery protection board

Charging voltage: DC 12.6V~13.6V

Continuous discharge current: Maximum 40A (If the heat dissipation environment is not good, please reduce the load current)

Continuous charging current: Up to 20A

Product size: 41*61*4mm

Product size: 41*55*4mm

Applicable options: Applicable to nominal voltage 3.7V, fully charged 4.2V lithium battery

(including 18650, 26650, polymer lithium battery), can drill below 170W

Note 1: Successfully starting the drill requires 3 10C-20C power batteries, or 6 5C-10C power batteries (power battery model recommended: Sony vtc4, vtc4A, vtc5A, vtc6) 0V and 12.6V cables, use 3mm2 or more copper wire (nickel sheet cannot be used)

Note 2: Connect 0V, 4.2V, 8.4V, 12.6V strictly according to the diagram. Do not touch any parts on the circuit board when soldering. Do not intentionally short-circuit.

Note 3: When soldering the battery for the first time or charging, as long as a single battery exceeds 4.2V, the ‘430’ resistor will heat up and discharge (discharge to about 4.19V and stop heating). If the “430” resistor is very hot, check whether the wrong line is connected.

The figure below is a schematic diagram of module discharge. The battery is 3 strings. The connected battery must meet the 40A discharge current. This can be achieved by connecting batteries in parallel or purchasing batteries with large discharge current. For example, if the battery is 2000mAH and the discharge multiple is 10C, then only 3 strings of 2 are required, and the discharge current is 40A.