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Hydroelectric portable charger

Published on August 25th, 2008 | by Ariel Schwartz

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Portable Charger Powered by Kinetic Motion Will Be Released Next Year



portable charger

Shouldn’t a strenuous run provide something more than a rush of endorphins? Something, perhaps, like power to charge your cell phone? M2E Power agrees. The company, which works with kinetic motion technology, announced plans today to release a portable charger for mobile devices sometime next summer.

The charger, which is the size of a pack of cards, derives power from cumulative motion from walking, jogging, cycling, or driving. Six hours of motion provides 30 to 60 minutes of extra power. And at $25 to $40, M2E’s catch-all charger won’t break the bank.

The kinetic energy system uses the Faraday Principle, which states that the movement of a conductor through a magnetic field produces voltage in the conductor proportional to the speed of movement. In this case, the conductor is a wire coil. The system uses a magnet that moves against the coil every time the charger moves, generating a charge that is captured in a capacitor. A logic circuit takes the charge to the built-in Li-Ion cell, where it is stored until use.

While the portable charger will be M2E’s only commercially available product in the near future, the company plans has more plans for their kinetic technology in the pipeline, including a centralized battery pack for military units and power for peripheral systems of hybrid cars. On a larger scale, M2E hopes to use kinetic energy to enhance wind, hydropower, and tidal power efficiency. Not bad for a company that came out of stealth mode less than a year ago.

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About the Author

was formerly the editor of CleanTechnica and is a senior editor at Co.Exist. She has contributed to SF Weekly, Popular Science, Inhabitat, Greenbiz, NBC Bay Area, GOOD Magazine, and more. A graduate of Vassar College, she has previously worked in publishing, organic farming, documentary film, and newspaper journalism. Her interests include permaculture, hiking, skiing, music, relocalization, and cob (the building material). She currently resides in San Francisco, CA.



  • clare

    Chocolate

  • clare

    Chocolate

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  • http://pawseries.com pawseries

    I promptly forget that I need to recharge it until the next time I go running. Horrible stuff.

  • http://pawseries.com pawseries

    I promptly forget that I need to recharge it until the next time I go running. Horrible stuff.

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  • Spork

    If it’s such a nifty “green” way to charge up your tech toys, why does it have a plug on the back for jamming it into a friggin’ wall outlet?

  • Spork

    If it’s such a nifty “green” way to charge up your tech toys, why does it have a plug on the back for jamming it into a friggin’ wall outlet?

    • porkncheese

      that’s pretty simple… because it’s a backup method for recharging. If you don’t want to go for a walk/run/ride to recharge your battery and you’re near a socket just plug it in and then plug your device into it and you’ve got an AC charger as well. pretty common sense to me.

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  • http://www.greenpacks.org Alex

    That would be damn needed for my cellphone because I never seem to have enough battery because I forget to recharge most of the times. Great find Ariel.

  • http://www.greenpacks.org Alex

    That would be damn needed for my cellphone because I never seem to have enough battery because I forget to recharge most of the times. Great find Ariel.

  • http://dailytech.com Jason

    Man I would love one of these for my iPod…somehow whenever I get ready to go running I realize my iPod is out of battery. Then I promptly forget that I need to recharge it until the next time I go running. Horrible stuff.

    Awesome article! :)

    -Jay

  • http://dailytech.com Jason

    Man I would love one of these for my iPod…somehow whenever I get ready to go running I realize my iPod is out of battery. Then I promptly forget that I need to recharge it until the next time I go running. Horrible stuff.

    Awesome article! :)

    -Jay

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