This 7.4v rechargeable li-ion batteries is made of 2 balanced 2600mAh Power Cells for a total of 7.4V 2600mAh capacity! The cells are connected in tandem and spot-welded to a protection circuit that provides over-voltage, under-voltage and over-current protection. Each cell can provide 3C of current, so all together the peak current you can draw is over 7.8 Amps. This a battery pack can provide strong power for 8.4V power tools, mobile speaker and other mobile devices. 7.4v rechargeable li-ion batteries, The battery comes with a XH2.54mm 2-pin plug, 7.4v 19.24wh rechargeable battery. The battery pack built-in lithium-ion battery protection chip,and equipped with parallel high-power MOS, it can provide safety guarantee for the high current output of the battery pack. PLEASE NOTE: Before using, please contrast with the old battery and check the polarity of the battery. Red wire connection power positive " +" , Black wire connect power negative pole "-". 2600mAh 7