June 30, 20187 yr Despite owning two pedelecs I recently purchased a Kalkhoff Pro Connect S. It was the last of the Panasonic powered Pro Connects ever made and has the 350w 36v motor. I'll maybe write a review when I've finished tinkering with it but I have a chance of buying a spare motor at a very good price. The spare motor is a marked NUA035HB and the motor on the bike is marked NUA035HA. Will the spare motor be compatible? and can anyone tell me what the last two letters stand for.
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