Hi Louis, after reading a post on Endless Sphere Forum, I am suspecting my battery system from you is with a problem. May be this is the reason why I had the problem with the motor or controller.
The output of the charger is 58.5V. But after fully charged (the green light on) and the charger still hooked up for another few hours, the voltage of the battery is still 54.4V. (According to Endless Sphere ...

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