Got my extended battery in. Put it in yesterday and gave it a full charge over night last night. I unplugged it when I rolled out of bed at 6:45 (ish) Left the house around 7:45... Got some text and phone calls while I've been at my office, FB updates, news updates etc. No browser or anything really. Played on it at lunch (chinese... yummy)... moderate usage for ~30mins, other 30 was spent eating... still had FB open etc. Mostly texting, browsing, FB, one short call and some market browsing.... so I'd say there was a pretty solid 30 minutes of constant usage... got back at the office, it's now 1:42 and I'm sitting at 85%.... If this is as bad as my battery life gets, I'll be just fine with that.