It’s late in the day and again my iPhone 3G’s battery is running low. Instead of giving this iPhone a name, as many people do with their gadgets, I’m using a mantra: “Another day, another charge.” That makes this an apt time to take a fresh look at an increasingly important part of our gadget portfolio, those portable charging devices that provide a shot of juice in a pinch. Do you know someone seemingly at the edge of disaster because of a misplaced phone charger? Or maybe, after a nap with the music on during a lengthy plane ride, you find you don’t have enough power to call the office?
