Experiencing very bad battery life

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http://forum.xda-developers.com – After a full charge, without even touching it, it drains the battery quite fast! Also I've been on a full Charge and not even an hour of screen time and already 65%. And I've only been using Talk and the xda premium app. My current rom is aokp_galaxysmtd_jb_build-4 I would most appreciate it if any of you would suggest different kernels or roms or something that could help me with this situation. (HowTos)