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I have a kalkhoff with a defective motor controller (see photos). I can’t find an exact replacement so I’m thinking of buying a generic controller. My questions are: Will any generic controller work? They generic ones I have seen have more wires than my bike seems to need, is that a problem...

Thanks to the help I’ve received on this forum, I’ve narrowed down the problem. I need a new Bafang motor controller. I have attached some photos. It has a lead coming out one end that ends in the battery connector. There are three leads coming from the other end. The thicker lead ends in a...

Hi I have a five year old kalkhoff groove F7 that stopped working. Based on my description of the fault, Kalkhoff said that the battery box and controller need to be replaced but they have stopped making them. Does anyone have any ideas about how I might get this fixed? Many thanks.