Operation Weak Bladder More Condition_symptoms I Need Info On Electric Wheelchair Repair And Operation?

I need info on electric wheelchair repair and operation? - operation weak bladder more condition_symptoms

I have a friend that I broke his back and needs to repair his wheelchair, I worked well enough for the repair of electrical and electronic equipment and medical Equipt. before. I understand that the engines and running, but I'm a little weak in the controls, but I'm studying fast.