[Q] Galaxy Tab 2 10.1 Battery Life Extremely Low. How to Find Cause?
I mistakenly posted this in the wrong forum at first, so here it goes again:
I bought this Galaxy Tab 2 10.1 (GT-5110) about a year ago, it runs the original firmware with the recent Samsung update to 4.2.2.
Lately the battery life has become very short. This was not a gradual change, but something that seemingly happened over night. I charge the device with a travel adapter that claims to output up to 1 A. The battery monitor shows that charging works as expected and the device charges to 100 % .
In use the battery shows 100 % for a while, but after about 20 to 30 mins jumps to 4 % , giving me the low batter warning. I am travelling and the only change I can think of is, that mains power here in Canada is 110 V instead of the 220 V back home in Europe, not that I expect that to be a problem.
I don't notice the device getting warmer than usual, so I don't believe, that the battery really charges to 100 %. Is there anything on the software side I can do to investigate this further?
Thanks for any advice!
EDIT: I just noticed, it's actually not the battery, that is dying. It is a error in the measurement. The battery life is normal, however the charge measurement shows nonsensical behavior: It goes to below 10 % in less than half an hour and then goes back to full, repeating this in cycles, like a sawtooth wave. So I suspect either a hardware fault in the measurement circuit or a software problem.
Here's a screenshot of what the battery info looks like, mind you the device has not been on the charger the entire time: