Our feeling about all of the company’s Power series iPod and iPhone chargers is positive, but not more than that. You can decide for yourself whether this is an important enough reason to hold off on the purchase given the ways that wall chargers are typically used, our feeling is that most users won’t care. PowerBlock Dual instead provides enough power to refuel the iPhone when it’s not in active use, which is the same as any standard iPod charger. This isn’t a huge problem, but official “Works With iPhone” chargers are supposed to be able to supply 1 Amp to the iPhone alone-enough power to charge its battery even when two of its wireless antennas and other features are in use. There’s only one subtle issue with PowerBlock Dual: its USB ports each put out only half an Amp of power, for a total of 1 Amp. ![]() ![]() It sells for $5 less than the standard PowerBlock, but doesn’t include a USB-to-iPod cable Griffin calls it the “PowerBlock Dual Universal AC Charger” because its twin ports can be used for pretty much any sort of USB devices you may have, assuming that those devices, like iPods and iPhones, came with their own USB cables. PowerBlock Dual uses the exact same shell shape as a black PowerBlock, only elongated by half an inch and possessing two USB ports where PowerBlock has one. Late in 2007 and early in 2008, a number of companies began to show off wall and car chargers with two separate USB ports, so that a single charger could feed power to two iPods or an iPod and an iPhone at the same time. PowerBlock Dual is a somewhat more interesting product. Our review unit had no problem charging an iPod or an iPhone. Though $1 more expensive than the $29 Apple part on paper, PowerBlock is typically sold for the same price as or less than Apple’s adapter. Griffin offers PowerBlock in white or black versions, each with a gray center, and a more attractive design than the original PowerBlock. While Apple’s is a smaller rounded square, and has a detachable wall blade design that can interface with an optional, expensive set of international wall blades, the latest PowerBlock is only slightly larger in total volume, wide rather than square, and includes a power light missing from the Apple unit. The standard $30 PowerBlock for iPod and iPhone is Griffin’s latest alternative to Apple’s USB Power Adapter both are plastic in-home wall chargers with a single USB port on one side and flip-out metal power blades on another.
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