lettuceman
New Member
- Joined
- Apr 26, 2021
- Messages
- 4
I haven't used my battery pack in a year, and when I started charging it again 2 of my cells immediately jumped to 3.7v and triggered the bms overvoltage disconnect. After it disconnects the voltage of the cell drops back to 3.1v, at which point the pack starts charging again, which immediately makes the cell spike up to 3.7v, triggering the high voltage disconnect again. Besides those two cells, the other ones also jump up in voltage, but not nearly as significant. Still, some of them go from 3.1 to 3.4v when charging. Any ideas on why this happened? I already top balanced them when I received the cells new, but I'll do it again just to be sure. I really hope it's not a faulty cell, but it seems like that's what's happening. Attached is a photo of the cell voltages when charging.