I recently jailbroke my iPhone 4 on 5.1.1 with redsn0w. The battery is horrible, I mean within half an hour I lose like 3-5 percent with just a few texts here and there. I overcloked it by doing the whole com.apple.SystemPowerProfileDefaultsbak.plist thing recently, and I hardly even notice a difference. I disable it and theres still almost no difference. I am using BattSaver, still not much. I've even deleted some useless daemons. I've even cleared most of my apps or tweaks using mobile substrate. Please help!!