My neighbor got con'd into buying this. Only one of two batteries will take a charge. So the only one that takes a charge has a issue with one light beep, no movement, and a chirp when Joy stick is moved. So for 3 grand I feel this is not worth it when there is better rated one on amazon for 500 or less. So the book says with one light beep it is a low battery or joystick issue.... well we can rule out the battery and So now what? Pay for a service technician to come and replace broken new parts...