Looking to extend your iPhone’s battery life without being caught up
in a messy tangle of wires that roots you to one spot? As the world’s
thinnest rechargeable battery case, the Mophie Juice Pack is designed
to virtually double the battery life of your iPhone 3G and 3GS.
Offering you the full protection of a hard-shell case while providing
battery life, the juice pack allows you to toggle between Charging and
Standby with the flick of a switch. The Smart Battery Technology
instructs the iPhone to always drain out the juice pack first so you
can still have a full iPhone battery while the integrated LED status
indicator keeps you updated on charging status.