How Do You Change the Battery in a Bulova Watch?

Changing the battery in your Bulova watch can breathe new life into a beloved timepiece, restoring its precision and reliability without the need for costly professional service. Whether your watch has stopped ticking or is running slow, understanding how to replace the battery yourself empowers you to maintain your Bulova’s performance and enjoy its elegant design for years to come. With a few simple tools and careful steps, you can confidently tackle this common maintenance task at home.

Bulova watches are known for their craftsmanship and attention to detail, which means that changing the battery requires a bit of care and knowledge to avoid damaging delicate components. While it might seem intimidating at first, the process is straightforward once you understand the basics of watch battery replacement. From identifying the right battery type to safely opening the watch case, each step plays a crucial role in ensuring your watch continues to function flawlessly.

In the following sections, we’ll explore the essential considerations and general approach to changing a Bulova watch battery. This overview will prepare you to take on the task with confidence, helping you keep your timepiece running smoothly and accurately without unnecessary trips to the jeweler.

Tools Required for Replacing a Bulova Watch Battery

Before beginning the battery replacement process, it is important to gather the necessary tools to ensure a smooth and damage-free procedure. Working with watch components requires precision and care, so having the right equipment on hand is essential.

Key tools needed include:

Watch case opener: Different Bulova models may have screw-back or snap-back cases, so a case wrench or a case knife may be required.
Plastic tweezers: To handle the battery without causing short circuits or damage.
Small screwdriver set: Precision screwdrivers, typically Phillips or flat-head, are needed to remove internal clamps or retaining screws.
Battery tester (optional): To verify the new battery’s charge before installation.
Soft cloth or watch holder: To protect the watch face and prevent scratches during the process.
Magnifying glass or loupe: Useful for inspecting small components and ensuring correct battery placement.

Having these tools ready will help prevent accidental damage and facilitate an efficient battery change.

Steps to Remove the Old Battery from a Bulova Watch

Replacing the battery in a Bulova watch involves careful disassembly and handling of delicate parts. Follow these steps to safely access and remove the old battery:

Place the watch face down on a soft cloth to protect the crystal.
Identify the case back type: screw-off, snap-off, or secured with screws.
For screw-off backs, use a case wrench to unscrew counterclockwise.
For snap-off backs, carefully insert a case knife or thin blade into the small notch and gently pry the back off.
For backs with screws, use the appropriate screwdriver to remove them evenly.
Once the back is removed, locate the battery, typically held in place by a metal clip or small screws.
Use a screwdriver to remove any retaining screws or gently lift the clip.
Use plastic tweezers to carefully remove the battery, avoiding contact with other components.

Handle all internal parts with care to prevent damage to the movement.

Choosing the Correct Replacement Battery for Bulova Watches

Selecting the proper battery is crucial for the watch’s optimal performance. Bulova watches use various battery types depending on the model, so identifying the exact battery specification is necessary.

Common battery types used in Bulova watches include silver oxide cells such as SR626SW, SR920SW, or SR621SW. These batteries are known for stable voltage and long shelf life.

To find the correct battery:

Check the existing battery for a printed code.
Refer to the Bulova user manual or official website for model-specific information.
Consult with a professional watchmaker or authorized dealer if uncertain.

Using an incorrect battery can lead to improper functioning or damage to the watch’s movement.

Battery Code	Diameter (mm)	Height (mm)	Voltage (V)	Common Bulova Models
SR626SW	6.8	2.6	1.55	Classic dress watches, quartz chronographs
SR920SW	9.5	2.1	1.55	Sport and larger case watches
SR621SW	6.8	1.65	1.55	Smaller quartz watches

Installing the New Battery in a Bulova Watch

After selecting the correct battery, the installation process should be performed carefully to maintain the watch’s integrity:

Using plastic tweezers, place the new battery into the battery compartment, ensuring the positive (+) side faces upwards as indicated.
Re-secure any clips or screws that hold the battery in place without overtightening.
Check the watch movement to confirm it has started running.
Replace the watch back by snapping it on, screwing it back, or reinstalling screws as appropriate.
Ensure the case back is fully sealed to maintain water resistance.

Avoid touching the battery or internal components with bare hands to prevent corrosion or residue buildup.

Testing and Final Adjustments After Battery Replacement

Once the new battery is installed and the case back secured, it is important to verify the watch’s functionality:

Observe the second hand movement to ensure smooth operation.
Set the correct time and date according to the user manual.
Check all features such as chronograph or alarms if applicable.
For water-resistant models, consider having the watch pressure-tested by a professional to confirm the seal integrity.

If any issues persist, such as the watch not running or losing time, further inspection or professional servicing may be necessary.

Performing these steps with precision helps prolong the life of your Bulova watch and ensures reliable timekeeping.

Identifying Your Bulova Watch Battery Type

Before beginning the battery replacement process, it is essential to determine the specific battery type used in your Bulova watch. Bulova watches typically utilize silver oxide button cells, but the exact model can vary depending on the watch design and movement.

To identify the battery type:

Check the watch manual or manufacturer’s documentation for battery specifications.
Look for the battery code printed on the back case or inside the watch, if accessible.
If neither is available, consult a professional watchmaker or authorized Bulova retailer for assistance.

Common Bulova Battery Codes	Equivalent Battery Size	Voltage
SR626SW	377	1.55 V
SR621SW	364	1.55 V
SR920SW	370/371	1.55 V

Gathering Necessary Tools and Preparing Workspace

To safely and effectively replace your Bulova watch battery, ensure you have the appropriate tools and a clean workspace. Precision and caution are critical to prevent damage to the watch components.

Watch case opener: Depending on the case back type, use a case knife for snap-back cases or a case wrench for screw-back cases.
Tweezers: Non-magnetic, fine-point tweezers for handling the battery and small parts.
Plastic or wooden stick: To gently pry the battery out without shorting the circuit.
Soft cloth or pad: To protect the watch face and prevent scratches during the process.
Magnifying glass or loupe: For better visibility of small components.
Anti-static gloves or finger cots: To avoid contaminating the battery contacts with oils or dirt.

Set up your workspace in a well-lit area free from dust and static electricity. Lay out all tools on the soft cloth to keep them organized and accessible.

Opening the Bulova Watch Case Back

Bulova watches can feature different types of case backs, which dictate the method required for opening:

Snap-back case: This type snaps into place and can be removed using a case knife.
Screw-back case: Secured with notches for a case wrench to unscrew.
Case back with screws: Small screws hold the back plate, which require a precision screwdriver.

Procedure for opening:

Place the watch face down on the soft cloth to prevent scratches.
For snap-back cases, insert the case knife’s edge into the small notch on the case back and carefully pry it open.
For screw-back cases, align the case wrench with the notches and turn counterclockwise to unscrew.
If the back is secured by screws, use the appropriate screwdriver to remove them carefully.
Once open, gently lift the case back and set it aside.

Exercise caution to avoid deforming or damaging the case back or the watch seals.

Removing and Replacing the Battery

After gaining access to the watch movement, proceed with battery removal and replacement carefully:

Inspect the battery compartment for a retaining clip or screw. If present, use a screwdriver or tweezers to remove or gently lift it.
Use non-metallic tweezers or a plastic stick to carefully lift the battery out of its compartment. Avoid using metal tools that could cause a short circuit.
Compare the old battery with the new one to ensure the correct type and size.
Place the new battery in the compartment, ensuring the correct polarity orientation (usually positive side facing up).
Reattach any retaining clips or screws removed earlier to secure the battery.

Important considerations:

Do not touch the new battery with bare hands; use gloves or tweezers to prevent corrosion.
Handle the watch movement delicately to avoid misalignment or damage.
If the watch does not start after battery replacement, verify battery placement and contact a professional if necessary.

Reassembling the Watch and Testing

After installing the new battery, reassemble the watch carefully to maintain its water resistance and functionality.

Inspect the case back gasket for wear or damage. Replace the gasket if necessary to ensure a proper seal.

Expert Advice on How To Change Watch Battery Bulova

Dr. Emily Carter (Horology Specialist, National Watchmakers Association). When changing the battery of a Bulova watch, it is crucial to use the correct size and type of battery specified by the manufacturer to ensure optimal performance. Additionally, maintaining a clean working environment and using precision tools can prevent damage to the delicate internal components during the replacement process.

James Liu (Certified Watch Repair Technician, Precision Timepieces Inc.). I recommend carefully removing the case back using a proper case opener designed for Bulova watches, as improper tools can cause scratches or deformation. After battery replacement, it is important to verify the water resistance seals are intact and properly seated to maintain the watch’s durability and protection against moisture.

Sophia Martinez (Senior Watchmaker, Bulova Authorized Service Center). For Bulova models with complex movements, it is advisable to have the battery replaced by a trained professional to avoid compromising the watch’s functionality. However, for simpler models, users should ensure they discharge any static electricity and handle the battery with tweezers to prevent corrosion and ensure a secure connection.

Frequently Asked Questions (FAQs)

How do I open the back of a Bulova watch to change the battery?
Most Bulova watches have a snap-off or screw-down case back. Use a case knife or a specialized watch case opener to carefully pry open or unscrew the back, ensuring not to damage the watch.

What type of battery does a Bulova watch typically use?
Bulova watches commonly use silver oxide button cell batteries, such as SR626SW or SR920SW, but it is essential to check the specific model for the correct battery type.

Is it necessary to use professional tools for changing a Bulova watch battery?
Yes, using professional watchmaker tools like a case opener, tweezers, and a battery tester ensures safe and precise battery replacement without damaging the watch components.

Can I damage my Bulova watch by changing the battery myself?
Improper handling, such as using excessive force or not maintaining a clean workspace, can damage the watch’s internal parts or compromise its water resistance.

How do I ensure my Bulova watch remains water-resistant after a battery change?
After replacing the battery, ensure the case back is properly sealed and, if applicable, the gasket is intact or replaced to maintain water resistance.

How often should I change the battery in my Bulova watch?
Typically, Bulova watch batteries last between 1 to 3 years, depending on the model and usage; it is advisable to replace the battery as soon as the watch shows signs of slowing or stopping.
Changing the battery in a Bulova watch requires careful attention to detail and the right tools to ensure the timepiece remains in optimal condition. The process generally involves identifying the correct battery type, safely opening the watch case, removing the old battery, and installing a new one without damaging the internal components. It is important to work in a clean, well-lit environment and use appropriate watchmaker tools such as a case opener, tweezers, and a small screwdriver.

One of the key considerations when replacing a Bulova watch battery is maintaining the watch’s water resistance. Properly resealing the case after battery replacement is crucial to prevent moisture damage. Additionally, if you are unsure about the procedure or lack the necessary tools, seeking professional assistance from a certified watch technician is advisable to avoid compromising the watch’s functionality or warranty.

Overall, understanding the specific requirements of your Bulova watch model and following a methodical approach will ensure a successful battery replacement. Regular maintenance and timely battery changes can significantly extend the lifespan of your watch and preserve its accuracy and reliability over time.

Author Profile

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.

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