9.6V Nickel-Metal Hydride mini battery with 1500mAh capacity and a peak discharge rate of 30Amps. Definitely high performance! Also fits many different applications like the M4A1, MP5-A5 and SD6, G36C, P90 and more! Comes standard with mini-Tamiya connector.WARNING! ONLY CHARGE WITH A PEAK DETECTION CHARGER RATED FOR NiMH BATTERIES! NEVER USE A WALL CHARGER TO CHARGE NiMH BATTERY PACKS! DOING SO MAY CAUSE IRREVERSABLE DAMAGE TO THE BATTERYTrickle Charge Rate: 100mA MAXPeak Charge Rate: 600mA MAX