1.NiMH rechargeable batteries. 2.voltage: 8.4V capacity: 1100mAh 3.apply for soft gun toy 4, supply the suitable charger. Product DetailsModel ListNo.Battery TypeModelCapacityVoltagePlug ... the rc toys, such as gun, helicopter, and rc car, .2:rechargeable nimh battery,3:working voltage: 8.4V4:ending voltage: 7.0V5 ...