John 987 Posted July 1, 2015 Share Posted July 1, 2015 Dear ExpertsMy electric unicycle has a 16 cell battery pack rated at 67.2v at full charge.Now, the battery charger stops charging after a short while of charging ( charger brick LED turns green).The voltage I measured read 60v. The battery power display panel had one or two LEDs lighted up only (out of 4). All LEDs are working when I first turn on the power switch.I tried charging with a working charger and same thing happened. The charging stopped after short while.Now after 1 time recharge using a working charger, the unicycle no longer can power up. The voltage is 60.9v.After a few tries, it sometimes has a beep and then cutoff again. So, still unable to power up.Now, the voltage reads 58.1v. I suspect its due to the low voltage cutoff preventing the start up. Is 58v too low? Can it be the controller fault? I doubt so since charging is direct to battery pack. Can i power the circuit with a 67 volt DC power source by connecting the power leads on the controller circuit board directly to the alternative power source instead of to the battery pack?Any idea if my assumption is correct?Will low voltage cause the problem described?Thanks!Best regardsJohn 987 Link to comment Share on other sites More sharing options...
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