I recently had my 4S replaced due to an issue I had with the mic; and since then, the replacement phone I got seems to have very bad battery. Here is my usage after just viewing a few websites, chatting on Facebook, and watching 1 or 2 vids:

Is this normal? Or could it be the battery issue people have been complaining about with iOS5? I don't think my original 4S had battery life like this, could it be due to my phone not having many battery cycles? I have had it about 2 weeks now, so don't see how this can be a problem.
I do have push email turned on, but I had it on my original 4S, and the battery seemed to be better. The battery here seems worse than my old 3GS..

Is this normal? Or could it be the battery issue people have been complaining about with iOS5? I don't think my original 4S had battery life like this, could it be due to my phone not having many battery cycles? I have had it about 2 weeks now, so don't see how this can be a problem.
I do have push email turned on, but I had it on my original 4S, and the battery seemed to be better. The battery here seems worse than my old 3GS..