Wiping battery stats doesn't improve battery life, says Google engineer
You there! Android hacker! Stop screwing around with your battery stats!
OK, if you're not part of the small subset of rooted users who likes to mess around with things they shouldn't, you can probably skip the rest of this story and read something more interesting below. But if you have fiddled with battery stats on your phone, or used any of the rooted "battery calibration" apps in the Android Market, which do the same thing, it's time to stop. Google engineer Diane Hackborn has taken to Google+ to dispel the myth that wiping battery stats can improve your battery life, or the efficiency with which your phone charges.
So there you have it. If you want better battery life, you're better off trying more basic techniques like keeping tabs on screen brightness or anything that might be running in the background. Or, y'know, buy a bigger battery...
More: +Diane Hackborn
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Alex was with Android Central for over a decade, producing written and video content for the site, and served as global Executive Editor from 2016 to 2022.
I believe AC is well aware:
Direct quotes: "It has no impact on the current battery level shown to you. It has no impact on your battery life. Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it go away." It's almost as ridiculous as the "I always wipe data THREE times before flashing a new ROM" crowd, but that's another debate. ;)
If it did cause that sort of response then there would indeed be a very good reason to clear stats as well as an explanation for a lot of device behaviour that's reported.
For instance, When rebooting my phone, sometimes the percentage would drop from lets say 50% to 20%. And even if i won't reboot my device battery would start draining substantially when it's below 20%. Like the whole 20% battery would deplete within 5 to 10 minutes!!
Not to mention after all this i bought a new battery just to overcome this problem but the problem remained the same, even the new battery depleted the same way the old one did. So according to me, Maybe it has nothing to do with Improving Battery life but it helps you show the Actual Battery Percentage.