Company: Griffin Technology
Model: TuneJuice Universal
Compatible: All USB iPods, iPhones
Griffin TuneJuice Universal
The latest version of Griffin's TuneJuice battery pack is here in the form of TuneJuice Universal ($25), a clean little soft touch black and chrome plastic enclosure that includes the first set of three AA batteries you can use to replenish a depleted iPod or iPhone -- assuming that you supply your own USB cable. Griffin claims that TuneJuice Universal adds 2.25 hours of talk time to the iPhone 3GS, which is to say a little under half its original run time or roughly 700mAh of power from the AAs. TuneJuice Universal turns itself on and off automatically when a device is connected, requiring no buttons or switches of its own, and has a yellow power light to indicate that it's on.