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BBS02 - No Power - Fuse / Breaker?

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    BBS02 - No Power - Fuse / Breaker?

    I built a BBS02 750W / 48V Mid-Drive bike about a year ago. The other day, the chain jumped off and somehow got tangled in the Rear Deraleur and tore it all to hell, bent it into a knot. I didn't notice it at the time, as I just pushed the bike home, but now it will not power on. I think I fried the controller.

    I tested the battery and it's pushing 52+ Volts. No problem there.
    Wiring looks fine. I had it all nice and wrapped in Heat-Shrink and Velcro. But I unwrapped it to check and it all looks good.

    I'm thinking that with the throttle at full-blast pumping full power into a motor that got jammed, something had to pop. I thought maybe there would be a fuse or breaker-button or something, but I can't seem to find anything like that.


    Thank you in advance.

    No overcurrent protection inside the motor/controller - if there is anything it would be external

    Gets me thinking there's is likely some wisdom to putting one of those blade fuses in a waterproof fuseholder that has a place for a spare fuse.... hmmmmm... next time I'm tearing into the wiring!


      Damn.... So It's the controller.


      • Bill B
        Bill B commented
        Editing a comment
        JCUT77 did you ever find out what it was? I have the same thing now. But for me I just disconnected the battery for a few days and reconnected. Screen won't power on.