I carry a phone roughly the size of a television, a pair of sunglasses that collects fingerprints like limited-edition coins, and have a boss who really likes to poke at my screen. My life is a series of smudges.

Even fancy new hotel rooms with flat screen TVs and iPhone alarm clocks catering to our gadget-laden lifestyles never seem to have enough outlets for charging all your toys. So a portable power bar is the most important thing you can travel with, particularly this folding model which can handle even the bulkiest of…