3S 20A BMS 11.1V to 12.6V Li-ion 18650 Lithium Battery Charger Protection Board
Specifications
Charging voltage: 12.6 V-13 V
Overvoltage range: 4.25-4.35 V 0.05 V
Overvoltage range: 2.3-3.0 V 0.05 V
Maximum operating current: 5A-6A
Upper instantaneous current limit: 8A
Current: less than 30uA
Internal resistance: less than 45 M
Service life: more than 50000 hours
Operating temperature: -40 to + 50 degrees
Storage conditions: -40 to + 80 degrees
Size: 50 * 16 * 1 mm
Protection against short circuit: protection, self-healing delay
Features:
Suitable range: For nominal voltage 3.6V 3.7V lithium battery(Including 18650,26650, lithium polymer batteries)
Product Size: 64mmx20mmx3.4mm
Material: Metal
Charging voltage: 12.6V
Maximum output current: 20A
Maximum output power/charging power: 252W
Note:

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 needs to first charge activation, then will have the output.
3. Do not mix the good battery and poor battery to use. The internal resistance of the 3 battery capacity is closer will be better. Please, buyers, know the professional knowledge of this module before buying.