According to Mophie, the Juice Pack iPhone battery extender provides an additional 250 hours of standby time, 8 hours of talk time, 6 hours of internet use, 7 hours of video playback, and/or 24 hours of audio playback. After using this puppy for close to a month, I can't confirm that those numbers are 100% accurate, but my gut feeling is that they're not far off the mark. Before I started using the Juice Pack I had to recharge my iPhone every single night, and even then it occasionally ran out of...
