I'm looking at the "Battery" section under "Settings", and there's two major sections:
- a graph that shows how full the battery has been over some period
- Which apps have used the most battery power over (what appears to be) that same period.
There's a label between the two sections that says "Use since last full charge"
And I can't figure out what constitutes "full charge".
Things I've tried: 1. Not letting the battery get full. (thought it would be this simple a couple of months ago when I started this investigation, but it's not this simple) 2. Not letting the battery get empty (it seems to reset the stats more when the battery is low, 3. Time charging (it also seems to happen if it's a short or a long charge)
So, I guess what I'm asking is, "What is it precisely that resets the battery stats?"
Android is open source? Does this mean the code is readily available to look through? Where would I get started to try to figure it out myself? Is this kept in a battery library? Where's the source code for that?