Rereading this thread, I now fully understand what you were saying. I had not known my device was trying to charge when I encountered these issues, because the charge % does not go up when it is doing so IME. My apologies for not understanding you sooner.
In my defense, I did definitely have thermal issues on top of the battery flipping one. Only once I had fully squashed those did I realize there may be more at play. On the bright side, my thermals are now very good.