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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?
Richard Thalheimer (formerly of the Sharper Image) has come out with a "snap-on" Lithium-ion rechargeable Backup Battery for the 3G iPhone.
Here is a link to producy's web-page:
There is a video on that website showing how it works etc. This looks like a better idea than using a bunch of AAA batteries