Make a Human Powered Mobile Phone Charger

Make a Human Powered Mobile Phone Charger


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Don’t you wish you could charge your cell-phone anywhere outdoors? A human-powered hand-cranked charger is a good way to do it. Read video article here: …

오늘은몇일? : 2015-11-10 18:13:07
Don’t you wish you could charge your cell-phone anywhere outdoors? A human-powered hand-cranked charger is a good way to do it. Read video article here: …

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