Rather than leapfrogging or rivaling a growing group of iPhone battery case competitors, the Snap Battery Case covers and powers the iPhone 4 less; it’s designed to let you quickly snap the iPhone 4 in, and go. There’s a 900mAh battery inside a thin back shell, a modestly flexible top plastic frame that leaves only the headphone port and Sleep/Wake Button exposed, and a bottom Dock Connector housing with holes that properly vent the…
