Griffin has introduced its newly refreshed PowerBlock called the PowerBlock Reserve. Much like its predecessor, Griffin's PowerBlock Reserve is a wall charger that can be plugged into any AC wall outlet to start charging your device via a USB output. It can also deliver a charge even when it is not plugged into the wall, thanks to its built-in rechargeable 2,000mAh lithium-ion battery pack which charges its own internal battery pack at the same time its charging a connected device to save time leaving you with more juice for later. The PowerBlock Reserve features a row of LEDs for battery status indication, ruggedized coating and comes with a 30-pin Apple sync and charge USB cable. Expect the PowerBlock Reserve to be available this spring for $59.99.