The Griffin Travel speaker takes away the hassle of having to remember additional batteries with an iPod travel dock. That's because the speaker is powered directly from your iPod using the 30-pin connector dock.

The obvious concern with this...

You know what it's like. You're sitting around the campsite after a brilliant day's festival action and you want to carry on the party. You've got your iPod fully charged up, but your portable speakers have run out of juice. Disaster.

Well,...