Live from CES 2013, we talk to Nectar about their fuel cell for iPhone, iPod touch, iPad, and anything other USB powered device. Nectar is composed of a single unit with a replaceable fuel cell, so you can take it with you, charge for up to 2 weeks, then change cells and keep on going.
How does it look to you? Is it small enough that you'd carry it around in a bag or even leave it in your car? How appealing are the replaceable butane power cells?