With the Exogear ExoLife iPhone 4 Case show off all the right curves of your device and ensure it never runs out of juice. The extended-life battery case is now available for pre-order (US$89.95) from the Exogear website. This drool-worthy case comes equipped with a 1500-mAh Lithium-ion polymer battery that can give a boost to your battery once and a tough hard polycarbonate shell. It also includes an USB 2.0 to micro-USB cable, so that you can indulge in all the synching activities and a thin blue LED battery meter keeps you in the loop. The black case should start shipping from July 30th where as the white avatar around September 30th.