Because technology is hard to run without power.
Gadgets sure are fun, aren't they? Until they run out of battery power. Then they're actually some of the lamest things you can possibly own. Think about it! Is that iPhone good for anything besides being a paperweight once the battery runs out? Nope.
Unless maybe you want to hold down other lightweight stuff besides paper.But now that you've got yourself a Kodak USB Power Pack, you've got a back-up battery right in your pocket! Assuming you keep it in your pocket. You'll be able to charge anything! Within reason.