Electric bike E-8100 Toplife Electric city bike Toplife E-8100. Frame: 28 “aluminum. Telescopic fork. Transmission: Rear derailleur and Shimano revolving handle. Electrical equipment: Central motor in 250 W crankset. 36V / 13 Ah Samsung cell battery. 5 levels of assistance with starting assistance up to 6 km / h Charging time: 4 h – Number of charge and discharge cycles: 500. Weight: 25.3 kg.