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BBS02 turns on then off immediately with flashing dead battery light

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    BBS02 turns on then off immediately with flashing dead battery light

    BBS02 750 w 48v 13.5 amp and 965 display from Dillengerelectrikebikes.com. Ive had this for 18 months and most likely the controller was not the new upgraded 3077 mosfets.

    Problem: Rode one evening and drained battery completely then charged it next day started to go for a ride and turned on display lit up as normal then immediately got a flashing dead battery sign as if battery is dead and then off it goes completely. My guess is its the controller, Battery shows 53.7 volts fully charged. I try to turn on again and nothing lights up on display. If i take battery out and back in I get the power up as normal then the flashing dead battery sign and off it goes completely again. Rinse and repeat

    #2
    Also I ordered a BBS02 new kit from Luna cycle with upgraded 1300 mofset and different display since 965 has issues from what i read. I will swap parts and post findings when it arrives. I've been wanting the mid drive for my recumbent bike anyway.

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      #3
      Possible that the BMS may have tripped as well on the battery that was run to LVC. Try charging though the discharge leads to reset the BMS


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        #4
        It was connector at battery to battery rack. I jumped past battery connections and everything worked fine. Ordering new connectors for battery and rack. I believe it has arced there in the past and put arc burns on the connector. Thus creating a poor connection over time.

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        • Rodney64
          Rodney64 commented
          Editing a comment
          Thanks for letting us know
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