Battery for Casio MQ-24: Type, Replacement, Battery Life and Price Guide

The battery for Casio MQ-24 is usually an SR626SW silver oxide button cell. This is a small 1.55V watch battery used in many simple analog quartz watches. If your Casio MQ-24 has stopped, the second hand jumps strangely, or the watch loses time, the battery is the first thing to check.

The Casio MQ-24 is a very simple watch, so battery replacement is usually cheaper and easier than on digital or G-Shock models. Still, you need to be careful when opening the case, because the back cover, movement holder and gasket are small and easy to damage.

Casio MQ-24 Battery Type and Quick Specs

QuestionAnswer
Watch modelCasio MQ-24
Common module1330
Battery typeSR626SW
Battery voltage1.55V
Battery chemistrySilver oxide
Approx. battery lifeAround 3 years
Display typeAnalog
Case backSnap-back case
Common search termsCasio MQ 24 battery replacement, Casio MQ-24 battery change, Casio 1330 MQ 24 battery

Short answer: for most Casio MQ-24 watches, the correct battery is SR626SW.

Some battery brands may use equivalent codes, but SR626SW is the safest battery name to search for.

Casio MQ-24 Battery Replacement

A Casio MQ 24 battery replacement is simple in theory, but the snap-back case can be tricky if you have never opened a watch before. The biggest risk is scratching the case, bending the case back, or damaging the gasket.

Tools you need:

ToolWhy you need it
Small case knife or watch case openerTo lift the snap-back cover
Plastic tweezersTo handle the battery safely
SR626SW batteryCorrect replacement battery
Soft clothTo protect the watch crystal
Small trayTo keep parts from getting lost
Case press or careful pressureTo close the snap-back cover

Basic steps:

  1. Put the watch face down on a soft cloth.
  2. Find the small notch on the case back.
  3. Use a thin case opener to carefully lift the snap-back cover.
  4. Note the position of the gasket before moving anything.
  5. Remove the old battery.
  6. Insert the new SR626SW battery in the same orientation.
  7. Check that the second hand starts moving.
  8. Make sure the gasket is seated correctly.
  9. Press the case back closed evenly.

Important: do not use a sharp kitchen knife if you can avoid it. It can slip, scratch the watch or cut your hand. A cheap watch case opener is safer.

Casio MQ-24 Battery Change: Common Mistakes

MistakeWhy it matters
Using the wrong batteryThe watch may not work or the battery may not fit correctly
Confusing SR626SW with other coin cellsSimilar-looking batteries can have different sizes or chemistry
Losing the gasketWater resistance can be reduced
Touching the movement too muchDirt or oils can affect the small parts
Forcing the case backCan bend the back or damage the case
Closing the back unevenlyMay pinch the gasket
Buying an old batteryShorter battery life after replacement

The most common mistake is buying a battery that looks similar but is not the correct size. For the Casio MQ-24, search for SR626SW rather than guessing from another Casio model.

How Long Does Casio MQ-24 Battery Last?

The Casio MQ-24 battery life is usually around 3 years. This is normal for a simple analog quartz watch with a small silver oxide battery.

SituationExpected result
New watch from fresh stockUsually close to full battery life
Old stock watchBattery may already be partly drained
Good-quality SR626SW batteryBetter chance of full life
Cheap no-name batteryMay not last as long
Moisture inside caseCan shorten battery life
Damaged movementNew battery may not solve the problem

How long does Casio battery last?
It depends on the watch. A simple analog Casio like the MQ-24 may last around 3 years, while some digital Casio watches can last 7-10 years or more. Solar Casio watches use a rechargeable cell instead of a normal disposable watch battery.

Casio MQ-24 Battery Price

The Casio MQ-24 battery price is usually low because SR626SW batteries are common.

OptionApprox. price in the US
Single SR626SW batteryAbout $2-5
Multi-pack SR626SW batteriesAbout $5-10
Watch shop battery replacementAbout $10-20
New Casio MQ-24 watchOften around $15-25

Because the Casio MQ-24 price is already low, some people buy a new watch instead of replacing the battery. But if the watch is in good condition, replacing the battery is still cheaper and less wasteful.

Best value: buy a fresh branded SR626SW battery from a reliable seller. Very cheap bulk batteries can be fine, but they may have less remaining shelf life.

What Batteries Do Casio Watches Use?

There is no single battery for all Casio watches. Different models use different batteries.

Casio watch typeCommon battery examples
Casio MQ-24SR626SW
Casio F-91WCR2016
Casio A158 / A168Often CR2016
Many analog Casio watchesSR626SW or similar small silver oxide cells
Larger digital Casio watchesCR2016, CR2025 or CR2032 depending on model
Casio G-ShockVaries by exact model
Casio solar watchesRechargeable solar cell

If you are asking what battery does a Casio watch take, always check the exact model number. The MQ-24 uses SR626SW, but another Casio watch may use a completely different battery.

Casio MQ24-9B and Module 1330 Battery Notes

The MQ24-9B Casio is one of the popular MQ-24 versions with a simple analog dial. It belongs to the same general MQ-24 family, so the battery information is usually the same: SR626SW.

The search term Casio 1330 MQ 24 battery usually refers to the module number printed in the watch documentation or case information. For this module, SR626SW is the battery type to look for.

Before buying the battery:
Check the back of your watch and confirm the model family. If your watch is a different Casio model with a similar look, do not assume it uses the same battery.

Pros and Cons of Replacing the Battery Yourself

Details
✅ CheapAn SR626SW battery costs much less than a new watch.
✅ Simple watchThe MQ-24 has no digital module, alarm or backlight to complicate the job.
✅ Quick replacementA basic battery change can take only a few minutes.
✅ Less wasteYou can keep using the same watch instead of replacing it.
⚠️ Snap-back case can be trickyOpening and closing the back may be harder than expected.
⚠️ Easy to scratchThe case can be scratched if you use the wrong tool.
⚠️ Gasket riskPoor gasket placement can reduce water resistance.
⚠️ Shop cost may be close to watch priceA repair shop battery change may cost almost as much as a new MQ-24.

Final Verdict

The correct battery for Casio MQ-24 is usually SR626SW. The battery life is around 3 years, and replacement is fairly simple if you have the right tool and steady hands.

If your Casio MQ-24 is still in good condition, replacing the battery makes sense. If the strap, case or crystal is badly worn, buying a new MQ-24 may be more practical because the watch is inexpensive.

For most people, the best option is simple: buy a fresh SR626SW battery, open the watch carefully, protect the gasket and close the snap-back case evenly.

FAQ

What battery does the Casio MQ-24 use?
The Casio MQ-24 usually uses an SR626SW 1.55V silver oxide battery.

What is the Casio MQ 24 battery type?
The battery type is SR626SW. This is the battery to search for when replacing the battery in most MQ-24 watches.

How long does Casio MQ-24 battery last?
The battery usually lasts around 3 years, depending on battery quality, storage age and watch condition.

Can I do a Casio MQ 24 battery replacement myself?
Yes, but you need a small watch case opener and a careful hand. The snap-back case can be scratched if opened with the wrong tool.

How do I change the battery in a Casio watch MQ-24?
Open the snap-back cover, remove the old battery, install a new SR626SW battery, check the gasket and press the back cover closed evenly.

What is the Casio 1330 MQ 24 battery?
For the Casio MQ-24 module 1330, the battery is usually SR626SW.

How much does a Casio MQ-24 battery cost?
A single SR626SW battery usually costs only a few dollars. A watch shop replacement may cost around $10-20.

Is the Casio MQ-24 battery CR2016 or CR2032?
No. Those batteries are common in some digital Casio watches, but the MQ-24 usually uses SR626SW.

What batteries do Casio watches use?
It depends on the model. The MQ-24 uses SR626SW, the F-91W uses CR2016, and other Casio watches may use different batteries.

Should I replace the battery or buy a new Casio MQ-24?
If the watch is clean and working well, replace the battery. If the strap, case or glass is badly worn, a new MQ-24 may be the better value.

Author

  • Juan Carlos

    Juan Carlos is a hands-on technical writer with over 15 years of real-world experience in consumer electronics and small device repair. Since 2008, he has worked in a repair workshop, dealing daily with watches, car key fobs, garage door systems, and other electronic devices.

    His work focuses on practical, easy-to-follow guides that help users quickly solve common problems without unnecessary complexity.

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