Griffin today announced the release of its PowerDock 5 ($100), a device charger that can hold up to five iOS devices at once. First seen at CES 2013, PowerDock 5 takes up about as much desk space as an iPad, featuring five USB charging ports and a clear backrest to prop up each iOS device. Each port features 10-watt, 2.1 amp charging—enough for full-speed recharging of non-Retina iPads, as well as all current iPhones and iPods. Because of its…