Battery or ROM issue?

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http://androidforums.com – Hey guys I'm a new member here although I've been using this forum for a year or two to root and customize my android phones. I recently upgraded to the LG esteem after trading an old laptop for it to someone on craigslist. I have rooted and installed the #2 rom as well as a few tweaks to help save battery (turning off 4g, disabled almost every autorun in gemini, etc). The problem is that my battery dies extremely fast, 3-4 hours maybe 5 if I don't use it, I go to work with it fully charged and its at 15% when I get out. Ridiculous imo. I've read a few threads with a similar issue and people (General)