iOS 7 & Battery Life?

I switched my daily driver 4S to iOS 7 beta 1, and boy, the battery life is TERRIBLE! The battery lasts me ~ less than 50% of what it used to on iOS 6.

Sure, it's the first beta, but the iOS 6 betas weren't this hard on battery life, at least for me.

Has anybody else experienced similiar problems with battery life on iOS 7?