Fluxmob Bolt
Keep your phone fully-charged — even when you're miles from the nearest wall outlet — with the Fluxmob Bolt ($60). This handy device is one part wall charger for any USB-enabled device, and one part battery, so you don't necessarily have to worry about being connected to the power grid to get some juice. Simply plug it in when you have access to power, and let your phone or tablet charge — the built-in battery charges at the same time. Then, when you're out on the move and in need of a recharge, just plug your device into the box, and let it go (it's good for up to two charges).
