If your an iPhone owner with a surfing/e-mail ‘habit’, then you may need some more juice (aka battery life). mophie has a product for the iPhone (and one for the iPod Touch too) called the Juice Pack that increases Standby Time to 250 hours, Talk Time to 8 hours, Video playback to 7 hours and Audio playback to 24 hours.
This battery pack slips onto the back and increases the bulkiness of the unit. You lose the sleekness and lightness, but hey, you get to chat away and be entertained for so much longer.
It ain’t exactly cheap, but if you’re on the go, this could be well worth it. A version for the 3G iPhone is on the way in Sept.
(Please note prices are subject to change and the listed price is correct to the best of our knowledge at the time of posting)