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    I built an "earth battery", a batte

    Thank you.
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    I built an "earth battery", a batte

    I built an "earth battery", a battery with the shape of an AA battery, and a couple galvanic cells un series. They use zinc and as oxidizers manganese dioxide in the AA shaped battery, and Cooper un the earth and galvanic cells un series. When I plug a 2.2V 0.25A bulb to a commercial AA battery...

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