ask and you shall receive.
" Naturally, we'd be telling just half the story if we only talked performance. There's an important question that's left: what kind of battery life can you expect? Power is nothing without longevity and, shockingly, the iPhone 5 copes amazingly well. In a day of heavy usage with LTE, GPS and WiFi all enabled, we managed 14 hours and 18 minutes before the phone succumbed to the elements.
On our standard battery rundown test, in which we loop a video with LTE and WiFi enabled and social accounts pinging at regular intervals, the iPhone 5 managed a hugely impressive 11 hours and 15 minutes. That's just 10 minutes shy of the Motorola Droid RAZR Maxx."
iPhone 5 review -- Engadget
Sent from my Droid RAZR MAXX / Atrix Lapdock