Charging voltage: 16.8V -18.1V; Continuous discharge current (maximum): 40A (if heat dissipation environment Not good, please reduce the load current to use) continuous charging current (upper limit): 20A ;Standard version (without equalization): suitable for electric drills with starting current below 60A and power below 100W.

Enhanced version (without equalization): suitable for electric drills with starting current below 80A and power below 135W. Balanced version: suitable for starting current below 80A, Electric drills with a power of 135W or less.

Note 1: 3 pcs of 15C-20C are required to successfully start the electric drill power battery, or 6 10C-15C power batteries (ordinary 18650 cannot start the electric drill !!).

Note 2: Wiring 0V, .4.2V, 8.4V, 12.6V, 16.8V, do not deliberately short circuit.

Note 3: When there is a load with a brush motor, try to connect a non-polar capacitor (withstand voltage above 25V, capacity 10uF-100uF) in parallel at 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 4 groups of batteries in series, please ensure that the voltage of each group of batteries is the same, if it is different, please fill each group of batteries separately and then use them in series.