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help please, I have just had my battery upgraded to lithium, with a second hand Heinzmann controller the motor spins but you can stop it with your hand - no power, I have found the 2 thin wires from the motor are not connected to the controller, could this be the problem ? also found these...

Hi I am a wheelchair user and have a cougar handcycle from team hybrd it uses a Heinzemann 36 v motor in the front hub - the battery is 36v 5ah ni cd -- controller and key built into the (heavy) box, what do I need to convert to Lithium battery power ? please bear in mind because of my...