Digital Energy 9.6V, 2000mAh Flat NiMH High Power RC Battery Pack for RC Cars and RC Vehicles Delivers 9.6 volts with a capacity of 2000mAh This NiMh battery takes 6-8hrs to completely charge. Compatible with Tyco, Nikko, Fast Lane, Toys R US, New Bright, Radioshack, Polaris and more. *CAUTION* - Not to be used with Lionel Train Sets