Hey all, just wanted to share this since it's extended my battery on the Tab 2 GREATLY when not in use. Pretty basic and most people probably know this, but: Go into settings>Wi-Fi, go to Advanced Settings on the top right, and set "Keep Wi-Fi on during sleep" to "Only when plugged in". Basically it just stops checking your email/etc every few minutes unless you're actually using the tab. I'm a pretty light user and this simple change made charging necessary only once every couple weeks, when it was every couple days before. Cheers!