How Do You Replace a Tissot Watch Battery?

AvatarByArron Moss Watch Maintenance

Replacing the battery in your Tissot watch might seem like a daunting task, especially given the brand’s reputation for precision and craftsmanship. However, with the right approach and a bit of care, you can breathe new life into your timepiece without the need for a costly trip to the jeweler. Understanding the basics of how to replace a Tissot watch battery empowers you to maintain your watch’s accuracy and longevity on your own terms.

Tissot watches are known for their elegant design and reliable Swiss movements, which require a specific type of battery to function optimally. Over time, even the most well-crafted batteries lose their charge, causing your watch to slow down or stop altogether. Knowing when and how to replace the battery ensures that your watch continues to perform flawlessly and keeps you on schedule.

In the following sections, we will explore the essential steps and precautions involved in replacing a Tissot watch battery. Whether you’re a seasoned watch enthusiast or a first-time DIYer, this guide will provide you with the confidence and knowledge to handle the process safely and effectively.

Opening the Case Back of Your Tissot Watch

Before replacing the battery, you must carefully open the case back of your Tissot watch. The method to open the case depends on the specific model and the type of case back it features. Tissot watches generally have one of the following case back types:

  • Snap-off case back: A thin lip or notch where a case knife can be inserted to pry open the back.
  • Screw-down case back: Multiple notches around the edge for a specialized case back wrench.
  • Screw-in case back: Smaller screws holding the back plate, requiring a precision screwdriver.

To avoid damaging your watch, use the appropriate tools and follow these guidelines:

  • Work on a clean, flat surface with good lighting.
  • Use a soft cloth or watchmaker’s pad to prevent scratching.
  • Apply gentle, steady pressure to avoid slipping or damaging the seal.

If you are unsure about the case back type, consult your watch’s manual or refer to the model specifications online.

Removing the Old Battery

Once the case back is removed, you will see the internal components of the watch. The battery is usually secured with a small metal clip or retainer. Follow these steps to safely remove the battery:

  • Identify the battery: It is typically a small, round silver disc.
  • Note the battery orientation: The positive (+) and negative (–) sides must be remembered for correct installation.
  • Use plastic or non-metal tweezers to avoid short-circuiting.
  • Gently lift or slide the retaining clip if present, taking care not to damage other components.
  • Carefully extract the old battery without applying excessive force.

Choosing the Correct Replacement Battery

Selecting the right battery is crucial to ensure your Tissot watch functions properly after replacement. Most Tissot watches use silver oxide batteries, but the exact size and voltage vary by model. Refer to the battery markings or your watch manual for the specific type.

Common Tissot battery types include:

Battery Model Diameter (mm) Height (mm) Voltage (V) Typical Watch Models
SR920SW 9.5 2.1 1.55 Many analog Tissot watches
SR927SW 9.5 2.7 1.55 Chronograph models
SR626SW 6.8 2.6 1.55 Smaller Tissot watches

Always purchase batteries from reputable suppliers to avoid counterfeit or low-quality cells. Avoid using lithium or alkaline batteries unless specified, as they may cause damage.

Installing the New Battery

After selecting the appropriate replacement battery, install it carefully to ensure proper contact and functionality.

  • Position the battery in the same orientation as the original, typically with the positive side facing up.
  • Slide or press the battery into the compartment gently.
  • Secure the battery with the retaining clip or spring, making sure it holds the battery firmly without bending or stressing the components.
  • Avoid touching the battery surface with bare hands to prevent corrosion caused by oils or dirt.
  • Confirm the watch starts immediately or after a gentle shake.

Reassembling the Watch

With the new battery in place, the next step is to close the case back securely to maintain water resistance and protect the movement.

  • Inspect the gasket or sealing ring on the case back for damage or dirt. Replace it if necessary.
  • Clean the gasket and the case back groove to ensure a proper seal.
  • Align the case back with the watch case carefully.
  • For snap-off backs, press down evenly until it clicks into place.
  • For screw-down backs, use the appropriate case back wrench to tighten it evenly, avoiding over-tightening.
  • For screw-in backs, reinsert and tighten the screws with a precision screwdriver.

Testing and Adjusting Your Watch

Once reassembled, verify that your Tissot watch is functioning correctly:

  • Check that the hands move smoothly and the watch keeps time accurately.
  • If your watch has additional functions (date, chronograph), test each feature to ensure proper operation.
  • Reset the time and date as needed, following the instructions for your specific model.
  • Monitor the watch over the next 24 hours to confirm consistent performance.

If any issues arise, such as the watch not starting or erratic movement, recheck the battery installation or consult a professional watchmaker to prevent potential damage.

Identifying the Correct Battery for Your Tissot Watch

Determining the appropriate battery type is essential before beginning the replacement process. Tissot watches typically use silver oxide button cell batteries, but the exact model depends on the watch series and movement type.

  • Locate the existing battery number, usually engraved on the battery itself, for exact identification.
  • Consult the watch’s user manual or official Tissot website for recommended battery specifications.
  • Common battery models for Tissot watches include SR920SW, SR621SW, and SR626SW, but verification is critical.
  • Purchase genuine or high-quality replacement batteries to ensure optimal performance and longevity.
Battery Model Diameter (mm) Height (mm) Common Usage
SR920SW 9.5 2.1 Chronograph and standard quartz models
SR621SW 6.8 2.15 Thin dress watches and ladies’ models
SR626SW 6.8 2.6 Standard quartz movements

Gathering Necessary Tools and Preparing Your Workspace

A clean, well-lit workspace and the right tools are crucial for a safe and effective battery replacement.

  • Tools required:
    • Watch case opener (case knife or case wrench depending on the back type)
    • Plastic or non-metallic tweezers to handle the battery
    • Small screwdriver set (if screws secure the battery compartment)
    • Magnifying glass or loupe for detailed work
    • Soft cloth or pad to protect the watch and avoid scratches
  • Ensure all tools are clean and free of debris to prevent damage.
  • Work in a dust-free environment to avoid contamination inside the watch case.
  • Discharge any static electricity from your hands or tools by touching a grounded metal object.

Opening the Watch Case Without Damaging the Watch

Tissot watches feature different case back types that require specific opening techniques.

  • Snap-back case:
    • Locate the small indentation or groove along the case back edge.
    • Insert a case knife blade gently into the groove and apply slight upward pressure to pop open.
    • Take care not to use excessive force that could scratch or deform the case.
  • Screw-down case back:
    • Use a case wrench adjustable to the size and pattern of the back (usually 3 or 6 notches).
    • Align the wrench carefully and turn counterclockwise to unscrew the back.
    • Apply steady, controlled pressure to avoid slipping and damaging the watch.
  • Secured by screws:
    • Remove any small screws holding a protective cover inside the case back.
    • Place screws safely aside to avoid loss.

Safely Removing the Old Battery

Proper battery removal minimizes risk to the watch’s delicate internal components.

  • Note the orientation of the battery before removal, typically with the positive side facing up.
  • Use plastic tweezers to carefully lift the battery out of its compartment.
  • If a clip or retaining bar holds the battery, gently release it with a screwdriver or your fingernail.
  • Avoid touching other components, such as the movement or contacts, to prevent damage or misalignment.
  • Inspect the battery compartment for corrosion or debris and clean gently if necessary using a dry, soft brush.

Installing the New Battery and Testing the Watch

Correct battery installation ensures the watch resumes proper function immediately.

  • Place the new battery into the compartment matching the original orientation (positive side up unless otherwise specified).
  • Secure any retaining clips or screws to hold the battery firmly in place.
  • Before closing the case, check that the watch hands are moving or the digital display is active.
  • If the watch does not start, verify battery orientation and contact cleanliness.
  • Reset any functions such as chronograph or calendar features if necessary according to the user manual.

Resealing the Watch Case to Maintain Water Resistance

Proper resealing is vital for preserving the watch’s water resistance and protecting internal components.

  • Inspect the case back gasket for wear, cracks, or deformation; replace if damaged.
  • Clean the gasket and the case back seating area to remove dust or debris.
  • Apply a thin layer of silicone grease to the gasket to enhance sealing and longevity.

    • Expert Insights on How To Replace Tissot Watch Battery

    Dr. Elena Martinez (Horology Specialist, Swiss Watch Institute). Replacing a Tissot watch battery requires precision and care due to the brand’s intricate design and water resistance features. It is essential to use the correct battery model specified by Tissot and to ensure the gasket is properly reseated to maintain the watch’s waterproof integrity. Improper handling can lead to internal damage or compromised sealing, so professional tools and a clean workspace are highly recommended.

    James O’Connor (Certified Watchmaker, National Association of Watch & Clock Collectors). When replacing a Tissot watch battery, one must first identify the exact movement type to select the appropriate battery. Opening the case back should be done with a dedicated case opener to avoid scratches or deformation. After battery replacement, it is crucial to test the watch’s functions and reset any electronic components, such as chronographs or date settings, to ensure full operational accuracy.

    Sophia Liu (Technical Trainer, Tissot Authorized Service Center). For Tissot watches, battery replacement is not merely swapping cells; it involves careful disassembly and reassembly to preserve the watch’s performance and warranty. We advise customers to avoid DIY attempts unless equipped with proper knowledge and tools. Instead, visiting an authorized service center guarantees that the battery replacement is done under strict quality standards, including pressure testing to confirm water resistance after service.

    Frequently Asked Questions (FAQs)

    What tools do I need to replace a Tissot watch battery?
    You will need a small screwdriver or case back opener, plastic tweezers, and a replacement battery compatible with your Tissot model.

    How do I identify the correct battery type for my Tissot watch?
    Check the watch manual or the existing battery inside the watch for the battery model number, typically a silver oxide cell such as SR626SW.

    Is it necessary to remove the watch strap before opening the case back?
    Removing the strap is not always required, but it can provide better access and prevent damage during the battery replacement process.

    Can I replace the battery myself without damaging the watch?
    Yes, if you follow proper procedures and use the correct tools carefully; however, professional service is recommended for complex models or waterproof watches.

    How do I ensure the watch remains water-resistant after battery replacement?
    Make sure the gasket is intact and properly seated before closing the case back. If the gasket is damaged, replace it to maintain water resistance.

    How often should I replace the battery in a Tissot watch?
    Typically, Tissot watch batteries last 2 to 3 years, but this varies depending on the model and usage. Replace the battery as soon as the watch stops or shows signs of low power.
    Replacing the battery in a Tissot watch requires careful attention to detail and the right tools to ensure the timepiece remains in optimal condition. The process typically involves identifying the correct battery type, safely opening the watch case without causing damage, removing the old battery, and installing the new one while maintaining the integrity of the watch’s seals. It is crucial to handle the internal components with care to avoid impairing the watch’s functionality or water resistance.

    For those unfamiliar with watch repair, it is advisable to seek professional assistance from authorized Tissot service centers or experienced watchmakers. This not only guarantees the use of genuine replacement batteries but also ensures that the watch is resealed properly to maintain its durability and warranty. Attempting a battery replacement without the proper knowledge or equipment can lead to costly repairs or voided warranties.

    In summary, understanding the steps involved in replacing a Tissot watch battery empowers owners to make informed decisions about maintenance. Whether opting for a do-it-yourself approach or professional service, prioritizing precision and care will help preserve the watch’s performance and longevity. Regular battery checks and timely replacements contribute significantly to the continued reliability of a Tissot timepiece.

    Author Profile

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    Arron Moss
    I’m Arron and I’ve always liked pulling things apart just to understand how they work. Watches were a natural obsession. Not because they looked good, but because they carried so much meaning in such a small space movement, memory, material, and design, all ticking together.

    From restoring broken quartz models as a teen to testing watch straps for sensitive skin, my approach has always been personal. Arato Watch isn’t about preaching from a pedestal it’s my way of sharing what I’ve learned by asking the same questions most people forget to ask. I believe watches should be understood, not just worn. That’s exactly what this site is here to help you do.