charged my iPad 2 overnight and disconnected this morning at about 7 o´clock. Read morning news and emails and surfed a little (over wifi). Maybe about 30-40 minutes. Drived to my workplace, a little surfing now and then and some videos from youtube (over wifi), read and write some mails, did some of my work stuff that i can do with iPad, later at home again some web surfing, e-mails, news and videos. About an hour or more of games and a lot of "fooling around" with my music apps (I use iPad for musicmaking a lot). I´m not sure, how many hours I worked with my iPad 2 all in all, but now its 22:20 and I have still about 20% of battery life !
I use the smart cover. So no complain here.