This product features a set of two OV2588 Tamiya radio-controlled car batteries from brand Overlander. The batteries generate 7.2V and have a charge of 3,300mAh. They are Ni-MH type batteries and come in a rechargeable pack, allowing Overlander users to maintain their vehicles' charge for as long as needed. They have a compatible scale of 1:12 and provide a reliable store of charge for cars, boats, or planes.