Energy Efficiency (Hacking a Dynamo Flashlight)
5:26
Added: 1 year ago
From: B2Bbroker
Views: 2,483
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  • Oh...and I am curious...how long do you have to wind it to charge (eg say for 5 minutes)? 

    sonnetg 7 months ago

  • @sonnetg 30 sec is enough :) i had one o those

    linemanlv 1 month ago

  • Awesome. The only thing is the battery can expire over time. Cool gadget though.

    sonnetg 7 months ago

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