HP Forum Archive 14

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Battery for HP 21S STAT/MATH calculator Message #1 Posted by AJ on 30 July 2004, 11:04 a.m. I would like to know what batteries I need to buy for an HP 21S STAT/MATH calculator. Thanks!

Re: Battery for HP 21S STAT/MATH calculator Message #2 Posted by Raymond Del Tondo on 30 July 2004, 1:58 p.m., in response to message #1 by AJ Hello, use LR44 coin cells. You'll need three of them. Raymond

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