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Hack a Hand-crank Flashlight
Metacafe tags : Science power Video hack free electronics electricity diy light battery hand mods flashlight crank stilllife
added 2008 Sun Feb 24 16:40:12
Here's a hack to turn a cheap hand-crank flashlight into a useful portable generator with lots of electrical storage. You may never need to worry about running out of batteries again!
Here's a hack to turn a cheap hand-crank flashlight into a useful portable generator with lots of electrical storage. You may never need to worry about running out of batteries again!
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