Question about UPG New Replacement Batteries 4 EZIP E Zip Scooter 400 500 650 750 900 12V 12AH - UB12120EBALT18

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Ezip 500 won't run : new batteries fully charged but it still shows low battery light...what else could be wrong

Tested the motor and it's good ..... tested the voltage going into the controller and it's 24 volts

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I'm having the same problem. checked fuses and both are good. going through the wiring harness to look for shorts. have a bad feeling the micro controller died, that is the little plastic box with metal fins on it under the seat post behind the batteries ******* to the frame. i can bypass the micro-controller and connect one 12 volt battery directly to motor and runs full speed. somehow it is wired with 2 - 12 volt batteries in series to give 24 volts and them the processor cuts back down to 12 volts to run the motor. not sure why this is engineered this way? still working the problem. what sucks so far is that the micro controller is encased in resin so it is virtually non repairable.
* Update added.
Found these wiring harness for sale online scooter stores and on ebay. I replaced mine with some intermediate level adapting the harness to my model scooter and this includes some soldering and wire splicing changing power connector heads off old harnedd to new harness to fit bike. Works great.

Posted on Mar 08, 2016

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