CYMA 7.2V 500mAh Ni-MH Micro Battery for CM-030 CM-121 CM-122 CM-123 AEP Airsoft CYMA 7.2V 500mAh Ni-MH Electric Airsoft Pistol Battery 7.2 Volts 500 mah Made For Airsoft Electric Pistols Nickel Metal Hydride construction