electric bike conversion kits : 1. Brushless hub motor :24v/36v/48v,180w-500w ,speed can according to your request . 2. Contorller:24v/36v/48v. 3. PAS sensor:1:1 intelligent pedal asistant systern. 4. Application Scope: electric bicycle ,electric tricyle and so on . 5. Charger:AC220v60Hz,charging time :6-8hours. 6. Throttle :twist intelligent speed throttle. 7. Alloy brake handle.