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Home Forums Technical Discussion Manually-rechargable power supplies?

This topic contains 2 replies, has 2 voices, and was last updated by  elnav 6 years, 3 months ago.

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    Is there such thing as a power supply/capacitor that you can manually pump up full of energy with your bare hands and later plug appliances into it (computer, refrigerator) for use?

    I could save a hell of a lot of money from the electric bill and get some exercise.



    How about those hand cranked flashlights with a USB port for recharging cell phones.

    AS for appliances good luck. It would be one heck of a work out.

    Even pedal powered generators are not very effective. To get a better idea

    Lowtechmagazine has some good articles on pedal power devices.



    For a better over view of what works in muscle powered generation look here:

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