Originally Posted by prowlingfox
Hi guys -
So I saw in one of the 4.4 ROM threads that someone had used the Battery Calibration app from the Play Store and they claimed it seriously helped their battery life on the geespr. I decided to look at the app in the Store, and I started reading the reviews. I'm perplexed - - many people gave five star reviews claiming it significantly improved their battery life, while others said it did nothing, and a few even said it made their battery WORSE. Then there's the few who have said that wiping the battery stats file (the function that the app fulfills) can't possibly make a difference to your battery life because it only affects how Android reports the battery info. Still further, some say that the battery stats are ALREADY wiped when you flash a new ROM or even just unplug your charger.
So how about it, guys? Can we get a definitive answer about this? Surely our talented devs know the truth?
I've been confused by the same thing. I usually recommend doing it when switching between roms. While I can't give you a definite answer, I have also read that wiping the batterystats.bin file does nothing. This thread here
says it does absolutely nothing and explains why. That being said, I am one of the people who have noticed significant increases in battery performance from it - which is why I recommend it. Apparently it shouldn't work though! So now the real question is, why the hell did my battery performance increase to such a high degree afterwards, if it does nothing? I didn't use the app, I just deleted the file once my phone hit 100%.
That thread I posted states it is clearly a placebo, and is even backed up by google. It won't hurt so I still do it because like I said Ive noticed an increase. Now Im completely unsure as to why that increase has taken place.
The app also says to let your phone drain to 0% and then recharge uninterrupted back to 100%. It says that it isn't necessary but helpful. Now this could help your battery IF it was a nickel based battery. Since ours in Lithium based, it can actually hurt performance and shorten your batteries life span.