[Q] Odd battery behavior, possibly faulty reporting. (CM11)

Recently updated from CM9 to jcsullin's CM11 (11-20140409). Most everything seems to be ok aside from an unusual battery issue, and I don't know what it's coming from. I've attached a screenshot with some battery stats to help out, but I can describe what was going on in this particular instance.

I've had my touchpad sitting on the touchstone nearly 100% of this time (only time it was not was when I picked it up and immediately returned it). At some point, loaded up and was playing Breach & Clear for a while. Finally stopped playing, and upon exiting, battery was reported at 1%. Now, I get that some things can drain the battery even while on a charger, but we're talking a span of maybe 60-90 minutes. At this point, I picked the pad up and the battery immediately went up to 100%, and I dropped it back onto the touchstone.

This is the second time I've had this happen. Yesterday, it actually shut itself off due to low battery when I picked it up. I turned it right back on, and it was reporting 100% (recovery also reports 100%). This morning, I reflashed the A6 firmware in case that was the issue, but it does not seem to have had any impact.

Really could use some advice here. I suspect the battery is more or less staying charged while on the touchstone, and that this is something related to bad reporting or (worst case) a defective tablet.

Thanks for any help.

Just a quick update. Shutting off the touchpad before leaving work, during the shutdown process, I saw the battery % drop from 100 to 0. As I was getting out the touchpad at work and turning it on, I got the battery-with-question mark symbol. Placed it on the touchstone and it booted itself. I decided to take it to recovery, and pulled it off the touchstone. Now, as I watch, the battery is changing % wildly. 100%, 29%, 0%, 67%, back to 100%, 0% again...


Really don't know what's going on. Did not have this happen on CM9. Could really use some help.

Edit: I just threw on a random game while off the touchstone to see what happened. Everything seemed normal, battery ran down to 93%. Exited the game, turned off the screen, and two seconds later it was shutting itself off with 0% battery. Immediately turned it back on, and it shows 93% again.

Fresh install, used tptools to wipe and repartition the tablet, no WebOS, CM11 only. Reflashing A6 didn't help.

Still unresolved, possible more problematic.

I rotated my tablet from landscape to portrait and back (while on the touchstone) and it decided to shut itself off.

If anyone knows of/has similar issues (fixable or note), I'd really like to hear about it. Will be disappointed if it's dead, but it's better than spinning my wheels on it for something I can't resolve. If I have to buy a new tablet, I'd like to get it over with.

Edit:

Been a bit since I posted this, but I let the tablet sit for a bit. The battery stats are pretty crazy. Note that I've left it on the touchstone this entire time. I don't get why it's doing what it's doing at all. See newly attached screenshot.

Ah well. Was hoping I might be able to fix it without any wipes.

I would think if the ROM itself was the issue, others with jcsullins' CM11 would have problems as well. Looks like that's not the case at this point. Perhaps I'll just retired the tablet and get a laptop.

Thanks for the input.

At this point, I can't get the thing to boot. I've had it on a charger for a month or two now. I've got the blinking home button. It booted once, but I wasn't in a position to hook it up to a computer and try to wipe it. I've not really put any energy into fixing it since.

I plan on getting it back on the touchstone at some point, and setting it next to my PC. If I ever get it to boot, I'm going to try to get webos back on it first thing, and go from there.