Most post from another thread.:
It's awesome, much better than my 2 year old iPhone 4.
I had it plugged into the Mac yesterday while setting it up, was plugged in copying music, etc, while I was playing with it.
Has been unplugged ever since, used it for a few hours last night, several hours today. Been connected to Wifi, browsing, Flipboard, Facebook, a few texts/iMessages, a couple of short (1-2 minute) phone calls, a few games (Words With Friends, SocialChess, etc...), BlueTooth to speakerdock for 30 mins.
Currently at 14% remaining:
"Time Since Last Full Charge" stats:
Usage: 7 hours 41 minutes
Standby: 20 hours, 47 minutes
Will run it down to 0 and do another full charge, but yet another aspect that I'm very impressed with.