Won't charge. Won't power up. Flashing...



  • @cactvs

    Time to call Future Motion



  • @skyman88 said in Won't charge. Won't power up. Flashing...:

    @cactvs

    Time to call Future Motion

    Yeah man. If your cells are reading 0.0 the BatteryManagementSystem is probably fried.



  • Sooooo... after many plugging and unpluggings, it finally turned on and read 100% charged. I went and rode 'til it wouldn't go another inch. Charged back up in 30 minutes and seems completely healthy now. I am happy but my trust is a little shaken... thanks for all the suggestions, people!



  • @mtruby82 I did that and got my board screwed twice. Had to send it back to FM which they took care of pretty efficiently. They recommended me to plug the charger forst to the wall and then to the board. By doing so there is an ARC noise that comes up (spark noise) but they said it was normal. Ever since I plug it this way I have nkt had that problem again. Logic will tell you to do otherwose but... this is what was told to me by FM



  • @iggi Weird. When I plug mine into the wall first, my board turns on a lot of the time and won't charge until I push the power button. A lot of people say this happens too. I've been using the "board first, then Wall outlet" method for a while and haven't had a problem.



  • @iggi As an electrical engineer, I too try to avoid causing conditions where arcing occurs. This is normally created when there is a low impedance and the initial inrush current when plugging in is high. Sparks and surges are typically not good for sensitive electronics (especially CMOS parts). So that is why I tend to plug in to the board first, then the wall.

    However, if the charging cycle does not initiate as some of you have been experiencing, it could be that the BMS is expecting a sharp transition from open circuit with no driving voltage to closed circuit with charging voltage present in order to trigger properly. If I see this problem with my boards, I will certainly try this plug in sequence.



  • @gadgetrider Yes, I too plug in the board first then the charge to the wall. I started doing this after my very first charge when I saw and heard the shock. 4 months and 640 miles later, no issues.



  • @mtruby82 but FM recommends to connect the charger first to the wall and then to the board...



  • Agree with gadgetrider. FM saying otherwise flies in the face of all conventional wisdom. Press power button if light stays green



  • @redboyjan between the charger and the BMS, there is quite a bit of control that goes into the electrical current. Conventionally speaking, yes, he is likely right. In this specific case? I'm not certain. He may be an engineer, but pretty sure FM has their own engineers. They made a point to mention an order to which you plug your board in, I don't think that was happenstance. If you could plug it in any old way there wouldn't be specific instructions.



  • Same thing started happening to my OW+ board. Tried all these methods, still doesn't stay on.

    What gets me the worst about this is OW technical support. I sent this info and logged a ticket, and it has been over 5 days with no reply or anything, other than being in the "processing state". For what we pay, and I've paid plenty - bought all boards, gifted OW boards, brought in plenty of business to FM, I would of expected faster service. Anyhow, sorry for using this as a pedestal for my rant, hopefully you got your board fixed by now.


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