Explanation:
This is a Samsung tablet from 2014, currently has LineageOS 18.1 (Android 11), the last it can get. Since it's unused I did a little experiment until I find someone who will use it. Today I have found so here is the post.
After charging it to 100%, I disabled Wi-Fi connection, put it on battery saving mode and it's been on for more than 2 months. Battery is still in good condition after all these years I guess. :)
It probably cannot measure correctly because this is an unexpected usage. Correct place is the bottom of it obviously. The screenshot just coincided with the upper side of the spike.
So it started out at 50%?
This doesn't make any sense for me, except if it was plugged in and the battery is dying over time ๐
I think it cannot show the whole graph, maybe the only one month part is here.
That still doesn't make any sense IMO.
I think its more of a sensor issue. Not too surprising given the age.