A Step-by-Step Guide – How to Change a Watch Battery

how to change a watch battery


Wristwatches are not just timekeeping devices; they are also fashion statements and sometimes even sentimental treasures. However, every watch, no matter how expensive or cherished, will eventually need a battery replacement. Instead of paying a professional to do it, why not learn how to change a watch battery yourself? In this step-by-step guide, we’ll walk you through the process of replacing a watch battery, ensuring your timepiece keeps ticking without breaking the bank.

Tools and Materials

Before you begin, gather the necessary tools and materials

1. Replacement Battery: The first step is to identify the correct battery for your watch. Consult your watch’s manual or the manufacturer’s website for the right battery model.

2. Screwdriver Set: A precision screwdriver set with various screwdriver heads to access the watch’s case.

3. Watch Case Opener: A case opener tool or a case back wrench designed for your specific watch type (screw-down or snap-on).

4. Tweezers: Fine-tipped, non-magnetic tweezers to handle small components.

5. Clean Cloth: A lint-free cloth to protect the watch’s surface.

6. Watch Block: A soft watch block or holder to secure the watch during the battery replacement.

7. Magnifying Glass: Optional but helpful for a closer view of tiny components.

8. Disposable Gloves: To prevent oil and dirt transfer from your fingers to the watch’s delicate parts.

Prepare your workspace

Choose a clean, well-lit, and flat workspace to ensure you can work comfortably. Lay out all your tools and materials within reach to minimize interruptions during the process.

Open the watch case

The method to open the watch case depends on the type of watch. Generally, there are two types

a. Screw-down Case: If your watch has a screw-down case back, use a case opener tool to gently turn it counterclockwise. Make sure you have a secure grip, as these can be quite tight.

b. Snap-on Case: For watches with a snap-on case back, insert a case opener tool into the small groove between the case back and the case. Gently pry it open, applying even pressure around the edge until it pops off.

Remove the old battery

Once the case back is off, you’ll see the watch’s internal components. Locate the battery and use your non-magnetic tweezers to carefully remove it. Pay attention to the orientation of the old battery; note which side is facing up to ensure you install the new one correctly.

Identify the battery type

Examine the old battery to identify its type, usually marked with a reference number (e.g., CR2025). This information is crucial for selecting the right replacement battery. If you’re unsure, consult your watch’s manual or the manufacturer’s website.

Install the new battery

Using your non-magnetic tweezers, carefully place the new battery into the watch, ensuring it matches the old battery’s orientation. Be gentle to avoid damaging any delicate internal components.

Reassemble the watch

With the new battery in place, it’s time to put your watch back together. Follow these steps based on your watch type

a. Snap-on Case: Align the case back with the watch case and press it down gently until it snaps into place.

b. Screw-down Case: Carefully screw the case back back onto the watch, ensuring it’s secure but not over-tightened.

Step 7: Check the watch’s functionality

Now that your watch is reassembled, it’s time to check if it’s running correctly. Press any buttons or turn the crown to activate the watch. Observe the hands or digital display to ensure they’re moving smoothly. If the watch isn’t working, it may need a reset or repair by a professional.

Clean the watch

Use a clean, lint-free cloth to wipe the watch’s surface and remove any fingerprints or smudges. This step ensures your watch looks as good as new.


Are all watch batteries the same?

All watch batteries do not use the same type of battery and, in fact, there are some very distinct differences in the size, width, and thickness of the different watch batteries.

How much does it cost to replace the watch battery?

Most professional watchmakers are going to charge around $5 to $14 to replace a basic watch battery, but this can greatly vary depending on the brand and type. Watches with a water resistant battery can cost $40 to $65, whereas chronograph models can cost as much as $65 to $100. a cheap Casio/Swatch?


Changing a watch battery might seem daunting at first, but with the right tools, materials, and a methodical approach, it’s a manageable DIY task. Not only will you save money by avoiding a trip to a jeweler, but you’ll also gain a sense of satisfaction from successfully maintaining your timepiece. Remember to take your time, work meticulously, and be patient. With practice, you’ll become proficient at changing watch batteries, keeping your watches ticking for years to come.

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