Like Incase’s Power Slider for iPhone 3G, PowerKZ combines a case with a rechargeable Lithium-Polymer battery pack, using a design that fully covers the iPhone’s front bezel, thickens its back, and extends its bottom by roughly half an inch; unlike Power Slider, PowerKZ is made from a combination of glossy white or black plastic and chrome accents, physically fits* either the original iPhone or iPhone 3G, and features a full-sized Dock…
