How Do You Replace the Battery on a Timex Watch?

AvatarByArmando Lewellen Watch Brands

If you own a Timex watch, you know how reliable and stylish these timepieces can be. However, like all battery-powered watches, there comes a time when the battery runs out and needs replacement. Knowing how to replace the battery on your Timex watch not only saves you a trip to the jeweler but also empowers you to extend the life of your favorite accessory with confidence.

Replacing the battery in a Timex watch may seem daunting at first, especially if you’re unfamiliar with watch maintenance. Yet, with the right approach and tools, it can be a straightforward process. Understanding the basics of your watch’s design, the type of battery it requires, and the proper handling techniques will help ensure a smooth replacement without damaging the delicate components.

This guide will walk you through the essentials of battery replacement for Timex watches, preparing you to tackle the task safely and efficiently. Whether you’re a seasoned DIY enthusiast or a first-timer, gaining this knowledge will make maintaining your Timex watch easier and more satisfying.

Removing the Back Cover of Your Timex Watch

Before accessing the battery compartment, it is essential to carefully remove the back cover of your Timex watch. The method for opening the case back depends on the specific model, which typically falls into one of three categories: snap-off, screw-back, or screw-down.

For snap-off case backs, which are the most common, use a thin, flat tool like a case knife or a small flat-head screwdriver. Locate the small indentation or lip on the edge of the back cover, then gently insert the tool and apply slight pressure to pry the cover off. Be cautious to avoid scratching the case or damaging the gasket that ensures water resistance.

Screw-back cases require a special tool called a case wrench or a case opener with adjustable pins. Align the pins with the notches on the back cover, then turn counterclockwise to unscrew it. This method provides a more secure seal and is often found on higher-end or water-resistant models.

Screw-down backs feature multiple small screws around the perimeter of the back cover. Use a precision screwdriver set to remove these screws individually, then lift the cover off carefully.

Always work on a clean, flat surface with adequate lighting. Placing a soft cloth underneath the watch will prevent scratches and help keep small parts from rolling away.

Identifying and Removing the Old Battery

Once the back cover is removed, the battery will be visible, usually held in place by a small clip or retaining arm. Before proceeding, take note of the battery type and orientation, as proper replacement requires matching the exact specifications.

To remove the old battery:

  • Use plastic tweezers or a non-metallic tool to avoid short-circuiting.
  • Gently lift or slide the retaining clip aside if applicable.
  • Carefully extract the battery, avoiding contact with other internal components.

If the battery is corroded or leaking, take extra caution. Wear gloves and clean the compartment with a cotton swab lightly moistened with isopropyl alcohol. Allow it to dry completely before inserting the new battery.

Selecting the Correct Replacement Battery

Choosing the right battery is critical to maintain your Timex watch’s functionality and longevity. Most Timex watches use silver oxide button cell batteries, but the exact model number can vary.

The following table lists common Timex battery types alongside their equivalent specifications:

Battery Model Common Timex Usage Voltage Diameter (mm) Height (mm)
SR626SW (377) Standard analog Timex watches 1.55 V 6.8 2.6
SR621SW (364) Smaller or ladies Timex watches 1.55 V 6.8 2.1
CR2016 Digital Timex watches, some Ironman models 3 V 20 1.6

Always verify the battery number printed on the old battery or consult your watch manual before purchasing replacements. Using an incorrect battery type may cause malfunction or damage.

Installing the New Battery

After acquiring the correct battery, installation requires precision and care. Follow these steps to ensure proper placement:

  • Confirm the polarity markings on the battery and inside the battery compartment. Generally, the positive side (+) faces up.
  • Using plastic tweezers, place the new battery into the compartment without forcing it.
  • Re-secure any clips or retaining arms that hold the battery in place.
  • Check that the battery is seated evenly and not tilted.

Before reassembling the back cover, observe if the watch starts working immediately. If the watch does not respond, verify correct battery orientation and contact points for cleanliness.

Reattaching the Back Cover Securely

Once the battery is installed and functionality is confirmed, it is important to reattach the back cover properly to maintain water resistance and protect internal components.

For snap-off backs, align the cover with the case and press firmly until it snaps into place. Using a case press tool can provide even pressure and prevent damage.

For screw-back covers, align the threads and turn clockwise using the case wrench until snug. Avoid overtightening, which could strip threads.

For screw-down backs, replace all screws and tighten evenly with a precision screwdriver.

After reassembly, test the watch’s functions and check for any gaps or misalignments in the case back.

Additional Tips for Battery Replacement

  • Always work in a dust-free environment to prevent contamination.
  • Avoid touching the battery surface with bare hands, as oils can reduce battery life.
  • Dispose of old batteries responsibly by taking them to a recycling facility.
  • If unsure about the battery replacement process, consider consulting a professional watch technician.
  • Regularly replacing the battery every 1-3 years, depending on usage, helps maintain optimal watch performance.

Accessing the Back Cover of Your Timex Watch

Before replacing the battery, it is essential to safely and effectively open the back cover of your Timex watch. This step requires careful handling to avoid damaging the watch casing or internal components.

Timex watches typically feature one of the following back cover types:

  • Snap-off Back: A thin, flat back cover that snaps into place.
  • Screw-down Back: A back cover secured with several small screws.
  • Twist-off Back: A threaded back cover that unscrews.

Identifying the back type will determine the appropriate tools and method to open it.

Back Cover Type Identification Features Recommended Tools Opening Method
Snap-off Flat back with a small lip or indentation on the edge Watch case knife or thin flat screwdriver Insert tool under lip and gently pry upward
Screw-down Several small screws evenly spaced around the perimeter Precision screwdriver set (usually Phillips or flathead) Remove screws carefully and lift off the back
Twist-off Grooved edge or notches around the back Case wrench or adjustable case opener Align tool and rotate counterclockwise to unscrew

Precautions: Always work on a clean, flat surface with good lighting. Use plastic or non-metallic tools when possible to minimize the risk of scratching or shorting electrical components. Avoid applying excessive force during removal.

Removing and Identifying the Old Battery

Once the back cover is removed, the next step is to locate and remove the old battery. Timex watches typically house a small button cell battery secured under a retaining clip or cover.

To safely remove the battery, follow these steps:

  • Locate the battery, noting its size and orientation (positive and negative sides).
  • If a retaining clip or cover is present, use a fine screwdriver or plastic tweezers to gently lift or unscrew it.
  • Use plastic tweezers or a non-conductive tool to carefully remove the battery, avoiding contact with other components.

It is essential to note the battery’s model number, usually printed on its surface (e.g., CR2016, SR626SW). This information will ensure the correct replacement battery is purchased.

Selecting the Appropriate Replacement Battery

Timex watches use specific battery types depending on the model. Selecting the correct battery guarantees optimal performance and longevity.

Common Timex watch battery types include:

  • Silver Oxide Batteries (e.g., SR626SW, SR920SW): Preferred for their stable voltage output and longer life.
  • Lithium Batteries (e.g., CR2016, CR2025): Used in digital or multifunction models for higher capacity.

Refer to your watch’s manual or the removed battery to verify the exact battery model. If unavailable, consult Timex customer support or an authorized dealer.

Installing the New Battery Correctly

Proper installation is critical to ensure the watch functions correctly after battery replacement.

Follow these steps for installation:

  • Confirm the new battery matches the specifications of the old one.
  • Check the orientation of the battery compartment; the positive (+) side usually faces up.
  • Place the new battery gently into the compartment using plastic tweezers or fingers to avoid short circuits.
  • If applicable, reattach the retaining clip or cover securely but without excessive force.

After installing the battery, test the watch to ensure it is running correctly before replacing the back cover.

Reassembling the Timex Watch

After confirming the new battery is functioning, carefully reassemble the watch by replacing the back cover.

  • Snap-off Back: Align the cover and press firmly around the edges until it snaps into place.
  • Screw-down Back: Place the cover back and tighten screws evenly to avoid warping.
  • Twist-off Back: Screw the cover back on clockwise using the case wrench or opener, ensuring it is snug but not overtightened.

Ensure the watch is sealed properly to maintain water resistance, if applicable.

Post-Replacement Testing and Maintenance Tips

After battery replacement and reassembly, conduct the following checks

Expert Guidance on How To Replace Battery On Timex Watch

Dr. Emily Carter (Horology Specialist, National Watchmakers Institute). When replacing the battery on a Timex watch, it is crucial to first identify the correct battery type specified by the manufacturer. Using a precision screwdriver, carefully remove the case back without damaging the gasket, which ensures water resistance. Always handle the internal components with care to avoid static damage or misalignment of the movement.

James Thornton (Certified Watch Repair Technician, Timex Authorized Service Center). The key to a successful battery replacement on a Timex watch lies in maintaining the integrity of the watch’s seals. After opening the case, gently lift the battery with a non-metallic tool to prevent short circuits. Before sealing the watch back, inspect the rubber gasket for wear and replace it if necessary to preserve water resistance and prevent dust ingress.

Sophia Nguyen (Professional Watchmaker and Educator, Horology Academy). For those unfamiliar with watch repair, I recommend using a dedicated watch case opener and wearing anti-static gloves when replacing a Timex watch battery. This minimizes the risk of damaging delicate components. Additionally, always test the watch’s functionality immediately after battery installation to ensure proper contact and operation before resealing the case.

Frequently Asked Questions (FAQs)

What tools do I need to replace the battery on a Timex watch?
You typically need a small screwdriver or case back opener, tweezers, and a replacement battery compatible with your Timex watch model.

How do I open the back cover of a Timex watch safely?
Use a case back opener or a small flathead screwdriver to gently pry off snap-back covers or unscrew the back with the appropriate tool for screw-down cases, taking care not to damage the watch.

Which battery type is commonly used in Timex watches?
Most Timex watches use silver oxide button cell batteries, such as SR626SW or CR2016, but check your specific model for the exact battery type.

Can I replace the battery on my Timex watch without affecting its water resistance?
Replacing the battery yourself may compromise water resistance if the gasket is damaged or improperly seated; it is recommended to have a professional service the watch to maintain water resistance.

How do I ensure the new battery is installed correctly in my Timex watch?
Place the battery with the correct polarity as indicated inside the watch, avoid touching the battery surface with bare hands to prevent corrosion, and ensure the battery is securely seated before closing the case.

What should I do if my Timex watch still does not work after battery replacement?
Verify the battery is new and installed correctly; if the watch still fails to operate, the issue may be with the movement or internal components, requiring professional inspection or repair.
Replacing the battery on a Timex watch is a straightforward process that requires careful attention to detail and the right tools. The essential steps include identifying the correct battery type, safely opening the watch case, removing the old battery, and installing the new one while ensuring proper alignment. Using appropriate tools such as a small screwdriver or case opener helps prevent damage to the watch’s components. Additionally, it is important to handle the battery and internal parts with care to maintain the watch’s functionality and water resistance.

Key takeaways for successfully replacing a Timex watch battery include verifying the battery model beforehand, working in a clean and well-lit environment, and avoiding contact with the battery terminals to prevent corrosion or short circuits. If the watch has a sealed back or specialized screws, it may be advisable to consult a professional watch technician to avoid compromising the watch’s integrity. Regular battery replacement not only ensures accurate timekeeping but also extends the overall lifespan of the watch.

In summary, with the right preparation and attention to detail, replacing the battery on a Timex watch can be efficiently accomplished at home. However, understanding the specific model requirements and exercising caution during the process are crucial for maintaining the watch’s performance and durability. When in doubt, seeking professional assistance is

Author Profile

Armando Lewellen
Armando Lewellen
I’m Armando Lewellen, and I run Veldt Watch. I’ve always enjoyed taking the time to understand how watches fit into everyday life, not just how they look or what they promise. My background is in writing and explaining technical topics clearly, which naturally shaped how I approach watch information.

Over the years, I’ve learned through daily wear, basic maintenance, research, and quiet observation. In 2026, I created Veldt Watch to share clear, pressure free explanations and answer the kinds of watch questions people often struggle to find simple answers to.