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  • Andy Toye

    hand crank battery charger. A good use for my dead drill

  • Steven R

    DIY Hand crank battery charger

  • Eric Olsen

    DIY hand-crank power. Recharge batteries when power is out. Solar is great too, this can prove useful on those cloudy emergency days.

  • Brenda Ashley-Todd

    hand crank...can be used to recharge single cell batteries

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Great for emergency preparedness: the Eton 2000 crank charger. Charge normally, or use the hand crank if there's no power.

give clouded over solar cells a coating of clear nail polish so the sun can recharge the battery again on your solar lights.

  • Ashley Lucas

    I had a few solar lights that weren't working so I gave this a try. Unfortunately it didn't work, but it did remove the cloudiness.

Hand powered energy for your phones! You never know when the lights will go out. Remember Sandy?!?!

Convert a battery powered drill into a hand crank battery charger (without harming the drill)

DIY Camping toilet. No more bushes! This is BRILLIANT! haha I had to post this just bc it brings funny memories in the past of doing things like this.

  • Joan Jones

    Clever .... easy to put together and easy to clean .... Thx for sharing!

Human Powered Kitchen Appliances | Hand Crank Kitchen Gadgets | Non-Electric Kitchens

Crude DIY AA-Cell to D-Cell Conversion

The GravityLight uses gravity, acting on a weighted bag, to generate energy.

  • General Awnings

    This is such a great concept and could work wonders for the developing world. Small steps every day!