Now the problem is that it is stuck at 100%, both in the status bar display and when checking in the settings and then battery. Any insight to this issue?
Stock, rooted but not unlocked.
UPDATE: After reading around with posts of the problem similar to mine, I tried a suggestion of turning the tablet completely off for at least an hour. Others did so overnight. I chose to power it off for an hour and now it is already discharging. Maybe this is a bug or a hardware fault, no one can tell for sure.