My Hoveround MPV5 chair bought through Medicare will shut off very unexpectedly. I have been tossed on the ground about 5 times. Hoveround maintenance man said it can't be fixed. The problem is built in. I would like to trade it for a Jazzy. I don't recommend anyone buying a Hoveround unless they don't mind being thrown to the ground.It also has sharp edges that stick out and damage walls, doorways and furniture. Call me and i will tell you more. Tb