How To Replace Merangue 2-Line Engineering Scientific Calculator Battery

Introduction

The Merangue 2-Line Engineering Scientific Calculator is an essential tool for students and professionals who require precise calculations for their work. However, a malfunctioning battery can disrupt functionality, causing frustration and potential setbacks. Additionally, not knowing how to properly dispose of the battery and clean any residue can lead to further complications, emphasizing the importance of understanding battery maintenance and replacement.

This guide will show you how to replace the batteries of the Merangue 2-Line Engineering Scientific Calculator, ensuring it functions smoothly. You will learn how to properly dispose of the old batteries, adhering to environmental guidelines to avoid any potential hazards. Furthermore, this guide will instruct you on cleaning any residual battery residue, ensuring your calculator remains in optimal condition for continued use.

What you need

Step 1 Calculator Battery

How To Replace Merangue 2-Line Engineering Scientific Calculator Battery, Calculator Battery: step 1, image 1 of 1

Turn the calculator off by holding down the [Shift] button.
Then, press the [AC][OFF] button.
Always turn your calculator off before removing the battery to prevent potential malfunction.

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Step 2

Flip the calculator so that the back case is facing you.
Use a Phillips #0 screwdriver to remove the single screw from the battery cover at the top of the back case.
Keep the screw in a safe place to use when replacing the battery cover later.
If the screw does not unfasten easily, do not force it to avoid stripping the screw. If the screw is already stripped refer to the How to Remove a Stripped Screw guide.

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Step 3

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Gently apply pressure to the battery cover and slide it upward.
If it doesn't come off easily, try gently wiggling it but do not use excessive force.

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Step 4

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Insert a plastic spudger between the two batteries.
Use the plastic spudger to gently pry out the left and right batteries.
Do not use metal spudgers, as they can damage to the battery.
Do not use force when prying out the batteries to avoid damage.

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Step 5

Put on the nitrile gloves and remove the two batteries from the battery compartment.
To dispose of the battery properly consult the How to Recycle End-of-Life Electronics article.
Always wear a pair of gloves prior to handling the battery to reduce the risk of chemical burns.

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Step 6

Inspect the battery compartment for any sign of alkaline residue.
If the area is clean, skip to step 8.

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Step 7

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Dab a cotton swab in distilled white vinegar.
Gently clean the battery compartment in an up and down motion with the cotton swab.
Allow the compartment to dry completely for approximately two minutes before inserting the new batteries.

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Step 8

Insert the new LR 1130 batteries in both slots.
Make sure the + sign on the battery is facing down in its respective slot.

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Step 9

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Slide the battery cover back into place.
Use a Phillips #0 screwdriver to secure the battery cover screw.

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Step 10

Reset the calculator by pressing the [ON] button.
Release the [ON] button and press [Shift].
Release the [Shift] button and press the [MODE] button.
Release the [MODE] button and press the [3] button to reset all.
Release the [3] button and press [=] to confirm the action.
Finally, release the [=] button and press the [AC] button to complete the reset.