Battery Management SystemChina 1s 3A Circular PCM BMS for 3.6V 3.7V 18650 18500 Li-ion/Lithium/ Li-Polymer 3V 3.2V LiFePO4 Battery Pack Size Φ 16.6mm (PCM-L01S03-965), Find details about China PCB Circuit Board, PCB from 1s 3A Circular PCM BMS for 3.6V 3.7V 18650 18500 Li-ion/Lithium/ Li-Polymer 3V 3.2V LiFePO4 Battery Pack Size Φ 16.6mm (PCM-L01S03-965)