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Casio FX-115ES PLUS Battery Replacement

What you need

  1. Casio FX-115ES PLUS Battery Replacement, Battery: step 1, image 1 of 1
    • Turn off the calculator by pressing the [shift] button.

    • Press the [AC] [OFF] button to turn off the calculator by pressing the [shift] button.

  2. Casio FX-115ES PLUS Battery Replacement: step 2, image 1 of 3 Casio FX-115ES PLUS Battery Replacement: step 2, image 2 of 3 Casio FX-115ES PLUS Battery Replacement: step 2, image 3 of 3
    • Turn the calculator the other way around so that the small panel in the top right corner of the back of the calculator faces forward.

    • Use a Phillips #0 screwdriver to remove the screw in the upper right corner.

    • Don't force the screwdriver on the screw, as it can strip the screw

  3. Casio FX-115ES PLUS Battery Replacement: step 3, image 1 of 1
    • Remove the battery cover.

  4. Casio FX-115ES PLUS Battery Replacement: step 4, image 1 of 1
    • Insert the spudger in the available slot in the middle of the right side.

    • Use the spudger to take the battery out carefully.

    • Be careful when removing the battery to avoid any damage.

  5. Casio FX-115ES PLUS Battery Replacement: step 5, image 1 of 1
    • Place the new 357 oxide button battery into the calculator.

    • Make sure that the + sign is at the bottom.

  6. Casio FX-115ES PLUS Battery Replacement: step 6, image 1 of 3 Casio FX-115ES PLUS Battery Replacement: step 6, image 2 of 3 Casio FX-115ES PLUS Battery Replacement: step 6, image 3 of 3
    • Reattach the battery cover.

    • Insert the screw back in place along with the cover using a Phillips #0 screwdriver.

    • Make sure to turn the screwdriver clockwise to lock the screw in tight, preventing the battery from falling out.

  7. Casio FX-115ES PLUS Battery Replacement: step 7, image 1 of 1
    • Reset the calculator by pressing [ON].

    • Press the [Shift] button.

    • Press the [9] [CLR] button to clear the data.

    • Press the [3] [ALL] button option.

    • Press the [=] [yes] button to accept.

    • Press the [AC] key to reset completely.

Conclusion

You have successfully replaced a Casio FX-115ES PLUS battery

Rodrigo Lopez

Member since: 01/23/23

145 Reputation

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