Sub-par battery life

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http://forums.androidcentral.com – I've seen lots of battery life forums, and most of them show great battery life (over 12 hours) with lots of screen time. I'm not even in an LTE area, but I get very good signal. My screen brightness is at about 30% and I have two e-mail accounts (Exchange push and Gmail sync). My phone is about 4 months old, and this type of battery life has been typical. My previous phone, an Infuse, could get nowhere near this, but I really think that the battery life on this phone can get better. What can I do to get more juice out of it? Is this normal battery life? I really doubt it, but I want som (HowTos)