I have been impressed with the battery so far. I took it off the Tylt Vu wireless charger at around 6 am and it has been off all day, still got 11% left. According to the battery stats that is 5 hours of screen time and 15 hour off the charger.
I have not used any battery saving methods either. Got my S3 Frontier connected, on the highest screen resolution, I listened to podcasts, and I am still downloading and setting things up