There has been a myth going around for years about how deleting the “batterystats.bin” file on Android devices improves the battery in Android devices. Users in forums regularly boast about how doing so will “reset battery stats” and provide “better battery life”. The reality however is that it does absolutely nothing to improve your Android device.
Diane Hackborn, creator of the Rings Extended app says it best in a post on Google Plus:
“This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the “Battery Use” UI in settings.
That is, it has deeply significant things like “app X held a wake lock for 2 minutes” and “the screen was on at 60% brightness for 10 minutes.”
It has no impact on the current battery level shown to you.
It has no impact on your battery life.”
I’ve been waiting for this myth to disappear on its own, because it’s been quite obvious for a long time that it does nothing to improve battery life. The myth has spread like wildfire over the Android community though and continues to grow though.