Casio FX-991MS Battery Replacement

Written By: Anthony
  • Comments: 3
Casio FX-991MS Battery Replacement

Difficulty

Easy

Steps

4

Time Required

8 - 10 minutes

Introduction

This guide demonstrates a step-by-step process on how to replace a CASIO FX-991MS battery. While the scientific calculator has a solar panel, the battery is still able to die after long usage, therefore it is necesary to understand how to replace it. Here you will learn how to quickly swap out the battery quickly and efficiently.

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    • Remove the case and flip the calculator backwards.

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    • Use a Philips #0 head screwdriver to remove the five screws on the back of the device.

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    • The top half of the calculator is tightly closed.

    • Carefully use an opening tool to slowly pry open the sides till it opens.

    • Apply a little bit of force if this is the first time opening the calculator.

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    • Use an opening tool to gently remove the battery from the device.

    Amazing, thanks. I was stuck with the top part, but this guide gave me the confidence to continue and figure how to prize it open.

    abua -

    Thanks! great guide!

    Jonathan Lin -

    Was wondering about opening the top. Thanks to you just used a prying tool to get it open

    Dan K -

Conclusion

To reassemble your device, follow these instructions in reverse order.

Author

Anthony

Member since: 22/01/21

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