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What to do with dead batteries? Answered

I have about 30 or more dead AA's AAA's and a 9v sitting in a bucket in my room, Are there any projects that I could do with them?

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user

there is zinc and manganese dioxide inside , with manganese dioxide and hydrogen peroxide you can make pure hydrogen , just watch out when cutting open the batteries , there is potassium hydroxide inside (corrosive)

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user
rocketman221 (author)2009-02-06

use them to run a joule theif.

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