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PUBLIC MARKS with tags energy & diy

2013

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2007

The $40 hidden inside a 12V battery | Wise Bread

by sbrothier
As the video shows, you simply split them open to reveal EIGHT 1.5V button-cell batteries, each one worth around $5. And as these 12V batteries come in pairs that gives you a grand total of 16 new batteries worth around $80. Not bad for an initial investment of $1.66. Kipkay also goes on to split a 9V battery for use in a battery emergency. You could say these hacks are literally "power to the people." (Sorry, couldn't resist).

instructables : Breath powered USB charger

by mauriz
Recharge your usb devices by breathing

2005

"How to make a solar power generator"

by sbrothier & 7 others
Using parts easily available from your local stores, you can make a small solar power generator for $250 to $300. Great for power failures and life outside the power grid. Power your computer, modem, vcr, tv, cameras, lights, or DC appliances anywhere you go.

Ekopedia

by sbrothier & 33 others
L'objectif de cette encyclopédie est de recenser, définir et expliquer les techniques alternatives de vie. Ceci, avec pour but premier de nous permettre de vivre d'une manière plus autonome.

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