Problem solved sent from my gt-i9300 using xda premium i am getting similar battery life on my s3 using omega as i help & troubleshooting battery fix from. Samsung galaxy s3 releases with battery issues: on the xda developers users experiencing this problem can fix it by changing the power_profile.xml file. Fix battery drain on verizon galaxy s3 on jelly bean update. xda member galchristian seems to have found a solution to fix this battery drain issue..
Thank you to galchristian on xda for the write up for this. galaxy s2/s3/s4/s5/notes- phone battery life fix / solution-- finally!. Some international users report a galaxy s3 battery drain issue, and while a manual fix is already available, samsung has not yet confirmed the problem.. Google play services drains batteries with wakelocks on custom 5.x roms. here are the fixes from cyanogen and the dev community in a nice, neat roundup..