Hi. I had a powerbike a dozen years ago for work and it was great. Then it developed problems and I could not get spares so it went to the tip. Am retired now and want bike to get around and save the car. I bought a secondhand IZIP with the view to modifying it with the spare batteries in the back box, lower seat, bigger bars, and a proper throttle . Unfortunately cannot use it because of controller? problem. Looks like I will have to buy new again as I cannot find a parts supplier. Really enjoy riding along with no effort and the ease of parking. Cannot pedal because of medical probs.