After almost a year of trying to contact them, they finally answer. I sent them a picture of my old one with the serial number and they had the controller. Bought it and gave it to friend who was trying to repair it. The back wheel with the motor needed to be replaced with an original from swagtron so I call them again but they don't have the wheel. My friend who is an electrician is going to get some wire and try to fix the wheel. I told him "Go ahead because I am buying a lectric 2.0 step thru" don't buy a SWAGTRON!