Wow, this is impressive. An enterprising young man from a faraway land (the Czech Republic!) took an ordinary battery from an MSI Wind netbook and added a USB charging port to it. He can charge his iPhone twice over and the battery still works like normal in his MSI Wind. They should add USB charging ports to all batteries!
You’d have to be relatively comfortable with mod-trickery to attempt this one but if you’ve got the brass ones, here’s the how-to video that’s found over on the guy’s site.
Just a word of warning, the video’s underscored by four and a half minutes of European techno-funk break beats, as the guy who put this together is apparently a DJ.