Power AdaptorChina 2s 4A PCM BMS for 7.2V 7.4V Li-ion/Lithium/ Li-Polymer 6V 6.4V LiFePO4 Battery Pack with I2c Protocol Size L39*W12*T3mm (PCM-L02S04-996), Find details about China Li-ion Battery BMS, Li-ion Battery PCM from 2s 4A PCM BMS for 7.2V 7.4V Li-ion/Lithium/ Li-Polymer 6V 6.4V LiFePO4 Battery Pack with I2c Protocol Size L39*W12*T3mm (PCM-L02S04-996)