By Todd Bernhard
When I first learned of the Power Beacon ($29.99) from Caseco, I thought it had something to do with iBeacons, Apple's proximity-based networking system. It doesn't. The Power Beacon is a compact, portable battery that can be recharged either using a 12V car charger or microUSB cable. The car adapter folds back into itself so you can travel with a device about the size of an Altoids tin or slightly smaller than a deck of cards.