3S 11.1V 12.6V 18650 Li-ion Li-ion Battery BMS PCB 25A Protection Board Balance

3S Lithium Battery Protection Board 25A. Lithium Battery Protection Board 25A. 3S Lithium Battery Capacity Indicator. 1PCS 3S Lithium Battery Capacity Indicator Module. 1PCS PCB Protection Board. The internal resistance of 3 battery capacity are closer will be better.

eBay