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This guide demonstrates the process of replacing the battery in a CASIO fx-50FH II scientific calculator. Batteries have a limited lifespan, so anything battery-powered will eventually cease functioning. In the worst case, old or damaged batteries may leak and damage or destroy the calculator. Also, alkaline residue can cause chemical burns, so carefully follow every safety precaution if your calculator's battery is damaged.
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To turn the calculator off, first press the "shift" button.
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Release the "shift" button, then press the "AC" button.
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Place the calculator face down, then use a Phillips #00 screwdriver to remove the single screw securing the battery hatch in the top right corner.
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Push the battery hatch to the right until it slides off.
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Insert the tip of a spudger into the indent on the right-hand side of the battery to lift the edge of the battery up.
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Lift the battery up and out.
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Inspect the battery compartment any alkaline residue.
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Use a cotton swab dabbed with white vinegar to wipe the alkaline off the battery compartment.
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Use a dry cotton swab to remove the vinegar and alkaline residues.
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Let the battery compartment dry completely.
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Insert a new LR44 1.5V alkaline button battery into the compartment, with the positive sign facing up.
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Reattach the battery hatch by sliding the hatch in from the right to the left.
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Use a Phillips #00 to secure the screw.
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You have successfully replaced the battery of a CASIO fx-50FH II Scientific Calculator!
You have successfully replaced the battery of a CASIO fx-50FH II Scientific Calculator!
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York University, Team M-4, Allen Summer 2022 crwdns2935289:0York University, Team M-4, Allen Summer 2022crwdne2935289:0
YORK-ALLEN-SU22SMG4
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Very nice guide! I found the pictures to be very good and corresponding to the steps very well.
Thank you for the steps. I followed the steps and managed to salvage my calculator which I almost had to throw away. This has helped reduce waste. :)
