Bear the Max weight of 75KGS. Max allowed(safest)MPH: 20Kms/H. Distance for one time charge up: More than 50Kms. Power of the engine:350W. Type of the engine:Without brush. Power of the accumulator:48V,14AH. Type of the accumulator: Aliminate airproof (needn't maintenance). Time for charge up the accumulator:3-8Hours. Size of the tyre bone:3.0'' Place the hub brake both in front and back.