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Silicon Valley Nation: 30-year battery life? Really?

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zhgreader
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re: Silicon Valley Nation: 30-year battery life? Really?
zhgreader   12/15/2012 1:38:28 AM
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solar cell can work

ROADSTIR
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Sharp calculator still going 36 years later!
ROADSTIR   8/22/2013 3:33:35 PM
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I won a sales contest and was awarded a "high tech" Sharp Elsi Mate EL-24 portable calculator back in 1977.  Everyone was wowed by this, at the time, as some high schools still used slide rules.  Going through an old drawer earlier today I ran across this amazing device and found that it is still workin on the original batteries!

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