If you look at the battery usage ang see Media Server process using up lot of battery, there is something going on over here, so I simply disable the Google Play music sync option. Settings –> Google –> and un-check all Google Play related stuff like Books, Magazines, Movies, Music, Sound Search, Google Currents
I turn on GPS using the power control widget on my home screen only when I needed it.
Live Wall papers
Live Wall Papers use a lot of battery, so use a static wall paper to save battery.
Turn off bluetooth when you don’t need it.