Hi, Nik.
You found something very old (and, probably, glitchy).
About your battery: try to find what prevents your device from sleep using something like wakelock detector (seach for it in google play store).
Also if you're working in 2g network make sure to switch on force 2g mode in Settings -> Mobile network settings -> Preferred network type. It consumes a LOT of battery life without any visible reasons when your device is trying to search for unexisting 3g network.
WBR, Vlad.