With BetterBatteryStats you can analyse the behavior of your phone, find applications causing the phone to drain battery while it is supposed to be asleep and measure the effect of corrective actions.
– Spot drainers based on detailed information about the root cause
– measure the effect of actions to reduce drain, following a simple method
– detect changes in the awake/sleep profile and quickly find the causes (rogue apps)
In other words BetterBatteryStats helps you gettings the best experience with your smartphone.
Due to major changes by Google in Kitkat root is required from 4.4 and upward (see here for more details: https://plus.google.com/110567671203524092843/posts/ReLvz6KJwG5). A workaround is available for tech-savvy userson the website.