QUOTE(andrewtho @ Mar 16 2013, 10:42 AM)
Uncle, how do you control your wakelocks?
Look under wakelocks using betterbatterystats . Usually these wakelocks are the one eating up your battery when you are not using it
Example in my recent new phone , HTC Butterfly - I noted the drain was 2-3%/hour without even using the phone. Wakelocks shown most prominent was audioout_4 : gooogle for it not much advise on solution , except disabled all default sounds if you do not need it. I have already disabled all these by default , yet the issue still persists. I than uninstalled all apps that needed/use sound and using Sherlock Holmes style do a eliminate and deduce style. End of the day I found the culprit - Vol+ and is strange it gives such issues on the Butterfly but not on the Note 2, Nexus4 and Xperia S. With uninstalling the app , now the drain on the Butterfly on idle is hardly 0.2%/hour . See, just a single app can gives so much problem
Secondly, disable all apps that you do not need to be regularly updated , eg I use Beautiful Widgets - default it updates the weather every 5 mins - I change it to every 4hours, RSS feeds - I change update to every hour instead of 10 mins, Facebook - another battery burner as it runs wild on its own and you cannot control it - I uninstalled it and replace with Friendcaster so that I can control how often it updates ( Friendcaster is also a way much better app than Facebook with more features) , etc , etc. Too many other apps I do not wish to quote. The thing is take time to study each app that needs access internet - disable the auto updates or control the time that it checks for updates
You need to spend time to analyse - sorry there is no quick fix solution
With such steps, my previous Note 2 overnight with 3G on, battery drain most is 3% over 7 hours and also about same on Butterfly, Nexus 4 and is close to ZERO on xperia Z ( due to its builtin excellent stamina mode)
This post has been edited by benny888: Mar 16 2013, 11:15 AM