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"With off-grid charging for mobile devices set to be a $2.3 billion industry, it's no wonder that practically every company specializing in personal off-grid power is trying to shrink down their products to"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/gadgets/personal-fuel-cell-offers-pocket-sized-power-from-water-video.html>