Already available for the iPhone, the Mophie Juice Pack will be available in an iPod Touch-friendly version next month. The $99 apparatus contains a lithium polymer battery and doubles as a soft-grip case that holds the Touch, giving it an extra seven hours of video playback or 24 hours of audio playback. That’s an entire day!

You may recall that I took a look at the Richard Solo battery backup doodad that works on almost any iPod/iPhone device and only costs $50, but this Juice Pack looks pretty good too. I’ll be getting a review unit in a few weeks, so I’ll put it to the test.