I have a problem with my koolwheel that is 2 days old. The battery won’t charge and the light stays blue(on the charger) instead of going to red.(charging)
The batterij voltage output is 22.5 volt instead of 36/42volt so thats way to low.
I opent up de battery to check the cells and there are all ok. All 20 cels are above 3.2 volt.
So the battery is 32.5 volt but the BMS electronics inside make it only 22.5 volt??
See photo below?
Any idea what is going on? And how to solve it?