Now this seems pretty useful, if you ask me. The iPhone 3G FUEL is the latest offering from Case-Mate and offerings a way to carry your iPhone and boost your battery life at the same time. And that’s a deal that you can’t really beat.

The FUEL makes it so you can charge your iPhone no matter where you are. Even if you leave your charger at home, you’ll be okay to go because the device provides you with an extra 9-hours of talk time.

Additionally, you can add on 7 extra web browsing hours, 24-hours of music playback, 8-hours of video playback and up to 250-hours of standby time. You can sync your iPhone 3G with this device as well. You can get the iPhone 3G FUEL Rechargeable Battery Pack today for $79.99.