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hand crank battery charger. A good use for my dead drill
DIY Hand crank battery charger
DIY hand-crank power. Recharge batteries when power is out. Solar is great too, this can prove useful on those cloudy emergency days.
hand crank...can be used to recharge single cell batteries
Ooo. Victorio Hand Crank Grain Mill - MyPatriotSupply.com
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.
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.
Clever .... easy to put together and easy to clean .... Thx for sharing!
Human Powered Kitchen Appliances | Hand Crank Kitchen Gadgets | Non-Electric Kitchens
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Crude DIY AA-Cell to D-Cell Conversion
The GravityLight uses gravity, acting on a weighted bag, to generate energy.
This is such a great concept and could work wonders for the developing world. Small steps every day!
make a cellphone charger that will work anywhere
DIY Solar Battery Charger