http://www.pinkbike.com/buysell/693038/ Might get it if its still available. Free if picked up. Probably going to switch to a gas engine because the motor doesn't work anyways. Get rid of some of the lights, flames etc.
if its charging, i would check with a Multimeter to see if there is voltage getting to the motor
controllers are under 20.00, if its the controller. if its the throttle its like 9.00
i seen a motor go. on a mini moto pocket bike. multimeter read 37 volts to the motor, so i took it apart and the brushes were all cracked, and a magnet broke off the housing.
funny how it says trades welcome but its free... lol give him a lollipop.