So you're running pre-release iOS, and expect it to work flawlessly?
I made the same mistake with iOS5beta and it was a nightmare. Power usage was the least of my issues. WHen iOS5 finally came out, I noticed most of my issues had disappeared (the rest got resolved by 5.1).
tl;dr: The use of iOS betas for your daily driver are inadvisable.
Yes, and 'kyro' made comments talking about a trend that could have only been experienced during the beta. Having this many data points on battery life in a few hours would be a pretty neat trick, and a much more damning situation.
However, this review has tested it and found a drastic effect on the iPhone 5's battery life running the released version so it's not limited to betas.
I made the same mistake with iOS5beta and it was a nightmare. Power usage was the least of my issues. WHen iOS5 finally came out, I noticed most of my issues had disappeared (the rest got resolved by 5.1).
tl;dr: The use of iOS betas for your daily driver are inadvisable.