Who needs USB battery packs? This is better....
Quote:
The PowerWalk system looks like an athletic knee brace and weighs about 1.7 pounds. The braces generate about 12 watts of electricity when the user walks at a normal pace; an hour's walk can apparently produce enough juice to recharge four cell phones.
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http://news.cnet.com/8301-17938_105-...er-leg-braces/
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iPod Touch 5G 32GB, Touch 4G 32GB, Clip Sport 8GB. Rockbox-> Clip Zip 4GB, iPod Nano 2G 4GB, iPod 5.5G 80GB
2012 Nexus 7 32GB, Asus MeMoPad 8 16+64GB, LG Optimus G Pro, Nokia Lumia 900 and Lumia 520
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