20A instruction as below: 3 string 12.6V 20A lithium battery protection board (comes with recovery function-AUTO Recovery) Scope: Nominal voltage of 3.6V, 3.7V lithium battery (including 18650,26650, polymer lithium battery) Product Size: 59 * 20 * 3.4mm Product weight: 4.3g Charging voltage: 12.6V - 13.0V Continuous discharge current (upper limit): 20A (if the cooling environment is not good, please reduce the load current use) Continuous charge current (upper limit): 10A Enhanced version: for starting current below 60A, for the drill power below 100 W Note 1: The successful start of the drill requires three 15C-20C power battery, or six 10C-15C power battery (ordinary 18650 can not start the drill!!). Note 2: strictly according to map wiring 0V, 4.2V, 8.4V, 12.6V, do not deliberately short circuit. Caution 3: When carrying a load of a brush motor, it is necessary to connect a non-polar capacitor (withstand voltage above 25V, 10uF-100uF) in parallel to the positive and negative terminals of the motor to prevent the reverse spike from the motor from interfering with the protection board or Break the MOS tube. Note 4: 3 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 in series. The The Discharge test, the voltage drop faster battery that group is poor battery.
1.Strictly according to the diagram wiring: 0V/4.2V/8.4V/12.6V,Otherwise it will cause damage to the chip.
2.After connection,it need to first charge activation, then will have the output.
Do not mix the good battery and poor battery to use.
The internal resistance of 3 battery capacity are closer will be better.
Please buyers know the professional knowledge of this module before buying