Volton Alation ST350 Step-through 36v11Ah Battery in Frame. Unique Battery in Frame Design. Superior Performance and Build Over the Competition - at a Lower Price!. Components from Shimano, Truvativ, Tektro Disc Brakes, Suspension Fork, Fenders and Safety Light. 36V11Ah Samsung Powered Motor, Backlit LCD Control. 5-speed Pedal Assist System and Pedal-Free Throttled Motor Power.