Wow... I've gotten MUCH better battery life since the newest update. I noticed a bit of a quicker battery drain after the iOS 4 update. Before I was down to 93% after watching a 45 minute video on a full battery. The last few days that I noticed that I was still at 100% after 45 min. This was how my iPad was when I first gotten it last year and all the way until the iOS4 update! Whoo hoo!