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Casio FX-991ES Plus Battery Replacement

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Casio FX-991ES Plus Battery Replacement: crwdns2935265:00crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

  • Flip the calculator upside down and lay it on a flat surface.

  • Do not press hard on the calculator to avoid turning it on by mistake.

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