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6 Steps for Opening a Watch to Replace the Battery

Have you been wearing a watch for a while and wondering if it’s time to change the battery? Or maybe you recently bought a watch and want to know how to change the battery if necessary? In this article, we’ll walk you through all the steps to open a watch and swap the battery.

When should a watch battery be changed?

There is no single answer to this question as it depends on the type of watch and its use. In general, watch batteries should be replaced every 1-2 years, but this may vary depending on the movement of the watch and how often it is used. If your watch starts to lose time or stops working, it’s likely that the battery needs to be replaced.

The tools needed to replace the battery of a watch

You will need some equipment. Here is a list of basic and professional tools that may be needed:

The basic tools

  • A clean cloth to protect the watch during the process
  • A pair of tweezers or a small screwdriver
  • A magnifying glass to see small parts

Professional tools

  • A watch case opener to remove the caseback
  • A tool to remove the pin from the crown
  • A press to replace the back of the case

The steps to open a watch and change the battery

Here are the steps to open a watch and replace the battery:

Step 1 – Identify watch type and case model

Before you start swapping out your watch battery, it’s important to identify the type of watch you have and the model of case that surrounds it. Indeed, there are different kinds of watch cases, which can be opened in different ways.

To do this, you can consult the user manual of your watch, or look for information online. If you are unable to identify the type of watch and the type of case, it is best to call an expert to avoid damaging your watch.

Step 2 – Prepare the workspace

Now you can start preparing your workspace. It is recommended to work on a flat and clean surface, and to have the necessary materials at hand.

You can also use a magnifying glass to make the job easier, especially if the watch parts are small and difficult to handle.

Step 3 – Open the Watch Case

Now that you are ready, you can open the watch case. Depending on the case model, you can use different materials to open it. Some enclosures can be opened with a simple screwdriver, while others require more specific hardware.

It is important to be delicate and precise when opening the case, so as not to damage the parts of the watch.

Step 4 – Remove the old battery

Once you have opened the case, you can remove the old battery, being careful not to drop or lose it.

To do this, you can use a small tool to gently remove the battery from its location.

Step 5 – Insert New Battery

Now that you have removed the old battery, you can insert the new battery, making sure that it is correctly positioned.

It is important to use a replacement battery of the same size and type as the old battery, to ensure that the watch functions properly.

Step 6 – Wind the Watch and Test the Battery

Finally, you can reassemble the watch by replacing the parts in the reverse order of their disassembly, making sure to tighten the screws and replace the gasket if necessary.

Once the watch is wound, you can test the battery by setting the time and checking that all functions of the watch work properly.

Tips and tricks for changing the battery of a watch

Changing the battery of a watch may seem simple, but it requires certain knowledge and precautions. Here are some tips for replacing a watch battery safely:

Check battery compatibility

Before replacing your watch battery, it is important to ensure that the new battery is compatible with your watch. Most watches list the battery part number to use, but if you’re not sure, it’s best to check with a watchmaker or consult the watch’s instruction manual.

Handle watch components with care

When you open the watch case, you should handle the components with care. Avoid touching sensitive parts, such as the watch movement, to avoid damaging the watch. Use proper tools and make sure your hands are clean and dry to avoid fingerprints and scratches.

Ensure a good seal after changing the battery

The water resistance of the watch is essential in order to protect it from water, dust and humidity. After changing the battery, be sure to wind the watch properly and check its water resistance. If you are unsure of how to wind the watch, it is best to leave this task to an expert.

Mistakes to avoid when changing a watch battery

Although replacing a watch battery can be easy, there are some mistakes to avoid to avoid damaging the watch:

  • Forcing the watch case open: It is important not to force the watch case open. If you encounter resistance, it probably means something is wrong. It is best to consult an expert in order to avoid damaging the watch.
  • Not ensuring battery compatibility: If you use a battery that is not compatible with your watch, it may damage the watch movement. Always check the compatibility of the battery before changing it.
  • Forgetting to test the watch after changing the battery: It is important to test the watch after changing the battery to ensure that it is working properly. If you don’t test the watch, you may run into problems later.

Should the battery change of a watch be entrusted to a professional?

Changing the battery of a watch may seem simple, but it still requires some technical knowledge and skills. If you feel uncomfortable or unsure that you can perform this operation correctly, it is best to take your watch to an expert.

A qualified watchmaker or jeweler will have the experience and materials to change the battery in your watch safely, also ensuring that all parts of the watch are properly wound and water resistant.

If your watch is highly valuable or has sentimental importance, it may be a good idea to take it to an expert to avoid any risk of damage.

Ultimately, the decision to change the battery yourself or have an expert do the job comes down to your skills, confidence level and the value of your watch. Either way, it’s important to handle your watch with care and follow the necessary steps to ensure a long life and optimal functioning.


With this complete guide to opening a watch and changing the battery, you can save money by not leaving this task to a professional. However, it is important to follow the steps and advice given in order to avoid damaging your watch. In case of doubt or apprehension, it is preferable to call on an expert to avoid any error and guarantee an optimal result. Follow the instructions carefully and you can change the battery in your watch with peace of mind.

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