Hey, thanks for the help guys.

The battery cells are probably about 4 years old. Is that the typical lifetime? I can try replacing the low voltage ones and seeing what happens.

In the meantime how do I balance the battery as you said? I left them charging for over a week before I took it apart.

Hi, my battery has been dying at half charge for a while now. At first I thought it was because the reading was inaccurate and when I went to pedal assist level 5 a lot of current was required and the remainder was depleted quickly, but not it just dies well before the charge is depleted without being loaded hard.

Is there a particular problem this kind of symptom points to, the BMS or battery cells? The battery can be recharged just fine but always dies prematurly after about 1 hour of riding.

Another question I have, I opened the case the test the voltage on the batteries to see if I could get as lucky with diagnosis as this guy:

https://www.youtube.com/watch?v=KParyuK9pjU&t=1212s&ab_channel=Stevenc22

Unfortunatly the batteries all show a normal looking voltage. My question are the cells supposed to have different voltages? Most are 4.1 V but the last two rows are 3.6V

Thanks for any help!