How Do You Replace a Bulova Watch Battery?

AvatarByArron Moss Watch Maintenance

Replacing the battery in your Bulova watch can breathe new life into a cherished timepiece, restoring its precision and reliability without the need for a costly visit to a jeweler. Whether your watch has stopped ticking or is running slow, a fresh battery often provides a quick and satisfying fix. Understanding the basics of how to replace a Bulova watch battery empowers you to maintain your watch’s performance and keep it looking great for years to come.

While the process might seem intimidating at first glance, it’s a manageable task that many watch owners can accomplish with a few simple tools and a bit of patience. Bulova watches come in various styles and designs, which means the battery replacement method may vary slightly depending on the model. Gaining a general overview of the steps involved will prepare you to handle the job confidently and avoid common pitfalls.

In the following sections, you’ll learn about the essential tools required, how to safely open your watch case, and the best practices for removing and replacing the battery. With this knowledge, you’ll be well-equipped to give your Bulova watch the care it deserves, ensuring it continues to keep time accurately and stylishly.

Opening the Bulova Watch Case

The initial step in replacing a Bulova watch battery involves carefully opening the watch case. Bulova watches can feature different types of case backs, including snap-off, screw-down, and screw-back designs. Identifying the type of case back is crucial to avoid damage.

For snap-off case backs, use a watch case knife or a thin, flat tool to gently pry the back off at the designated notch. Exercise caution to prevent scratching or bending the metal. In the case of screw-down backs, a specialized case wrench is necessary to unscrew the back. Align the wrench’s pins with the notches on the case back and turn counterclockwise. Screw-back cases usually have small screws holding the back plate in place, which require a precision screwdriver to remove.

When handling the watch, ensure it is placed on a soft, clean surface such as a microfiber cloth to protect the crystal and prevent slipping. Wearing latex gloves or finger cots is recommended to avoid contaminating internal components with oils or dirt from your fingers.

Removing and Identifying the Battery

Once the case is open, locate the battery, which is typically held in place by a small metal clip or a retaining arm. Use a pair of non-magnetic tweezers or a plastic prying tool to carefully lift the clip or move the arm aside. Avoid using metal tools that could short-circuit the battery or damage delicate components.

After removing the battery, note the battery type and number inscribed on its surface. Bulova watches commonly use silver oxide batteries, and the battery number is essential for purchasing the correct replacement. If the battery number is worn or illegible, consult the watch’s user manual or look up the model online to verify the correct battery specification.

The following table lists common Bulova battery types along with their corresponding specifications:

Battery Model Diameter (mm) Height (mm) Voltage (V) Common Bulova Models
SR920SW (371) 9.5 2.1 1.55 Classic analog Bulova watches
SR626SW (377) 6.8 2.6 1.55 Small dial Bulova models
SR621SW (364) 6.8 2.15 1.55 Thin profile Bulova watches
SR927SW (395/399) 9.5 2.7 1.55 Chronograph Bulova models

Installing the New Battery

Before installing the new battery, inspect the battery compartment for any corrosion or dirt. Use a soft brush or a lint-free cloth to clean the area gently if necessary. Avoid using liquids or abrasive materials that could damage the internal components.

Insert the new battery with the correct polarity, usually indicated by a plus (+) sign on the battery and within the battery compartment. Ensuring proper orientation is critical for the watch to function correctly. Secure the battery by repositioning the retaining clip or arm, making sure it firmly holds the battery in place without exerting excessive pressure.

After the battery is installed, check that the watch’s second hand or digital display is functioning. If the watch does not start immediately, remove and reinstall the battery to verify proper contact.

Sealing the Watch Case

Once the new battery is installed and the watch is confirmed operational, it is important to properly reseal the case to maintain water resistance and protect the internal mechanism.

For snap-off cases, align the case back with the watch body and press firmly until it snaps back into place. Using a watch press tool ensures even pressure and reduces the risk of damage. For screw-down case backs, use the case wrench to screw the back on securely, but avoid overtightening which can strip the threads.

If the watch has a gasket or O-ring, inspect it for damage and replace it if necessary to maintain the watch’s water resistance rating. Lightly lubricate the gasket with silicone grease before closing the case to improve the seal.

Final Checks and Maintenance Tips

After resealing the watch, perform the following checks to ensure optimal performance:

  • Verify the watch is keeping accurate time over a few hours.
  • Check the crown and pushers for smooth operation.
  • Confirm that any complications such as date or chronograph functions are working properly.
  • Clean the exterior of the watch with a soft cloth.

To prolong battery life and maintain your Bulova watch’s performance:

  • Avoid exposing the watch to extreme temperatures or magnetic fields.
  • Replace the battery promptly when it runs down to prevent leakage.
  • Have the watch professionally serviced every few years to inspect the movement and seals.

By adhering to these detailed steps and precautions, you can safely and effectively replace the battery in your Bulova watch, preserving its precision and longevity.

Preparing to Replace Your Bulova Watch Battery

Before beginning the battery replacement process, ensure you have the necessary tools and a clean, well-lit workspace. Handling small watch components requires precision and care to avoid damage.

  • Tools Required:
    • Watch case opener or a small flat-head screwdriver
    • Tweezers (preferably non-metallic to avoid short circuits)
    • Plastic or wooden toothpick
    • New battery compatible with your Bulova watch model
    • Soft cloth or watch holder
    • Optional: magnifying glass for detailed work
  • Workspace Setup:
    • Use a clean, flat surface free from dust and debris
    • Work in a well-lit area to clearly see small parts
    • Keep small containers or trays nearby to hold screws and parts

Opening the Bulova Watch Case

Bulova watches typically feature either a snap-back case or a screw-back case. Identifying the case type is essential for selecting the proper opening technique.

Case Type Identification Opening Method
Snap-back Case Flat back with a small indentation or lip along the edge Use a watch case opener knife or thin flat-head screwdriver to gently pry open
Screw-back Case Back shows multiple notches or grooves around the perimeter Use a case wrench or adjustable opener to unscrew counterclockwise
  1. Place the watch face down on a soft cloth to prevent scratches.
  2. If it is a snap-back case, carefully insert the case opener into the indentation and gently pry the back off.
  3. For screw-back cases, align the case wrench with the notches and turn counterclockwise until the back loosens and can be removed by hand.
  4. Keep the removed case back in a secure place to prevent loss or damage.

Removing and Identifying the Battery

Once the case back is removed, the battery is visible within the movement housing. Take care not to disturb the internal components.

  • Note the orientation of the battery—usually the positive (+) side faces outward.
  • Identify the battery type by the alphanumeric code printed on it (e.g., SR626SW, 364).
  • Use plastic tweezers or a toothpick to gently lift the battery out; avoid metal tools that can cause short circuits.
Common Bulova Battery Codes Equivalent Battery Types Voltage
SR626SW 377, 376 1.55V
SR920SW 370, 371 1.55V
SR621SW 364, 363 1.55V

Installing the New Battery and Reassembling

Proper installation of the new battery is crucial to ensure correct functionality and longevity.

  1. Confirm the replacement battery matches the original’s size and voltage.
  2. Place the new battery in the compartment, ensuring the positive (+) side faces the correct direction, typically outward.
  3. Use plastic tweezers or a toothpick to avoid contaminating the battery or movement with oils from your fingers.
  4. Check the watch to confirm it is running before closing the case.
  5. For snap-back cases, align the case back and press firmly until it snaps into place; use a case press if available for even pressure.
  6. For screw-back cases, screw the back on clockwise using the case wrench until snug; avoid over-tightening.

Testing and Final Checks

After reassembly, verify the watch’s performance and inspect for potential issues.

  • Check that the watch hands move smoothly without hesitation.
  • Set the correct time and date, if applicable.
  • Inspect the case back seal or gasket for damage; replace if necessary to maintain water resistance.
  • Confirm the case back is securely fitted to prevent dust or moisture ingress.
  • Wear the watch for several hours to ensure consistent operation.

Professional Insights on How To Replace A Bulova Watch Battery

Dr. Emily Carter (Horology Specialist, National Watchmakers Institute). When replacing a Bulova watch battery, it is crucial to use the correct battery model specified by the manufacturer to ensure optimal performance and longevity. Additionally, employing proper tools such as a case back opener and non-metallic tweezers minimizes the risk of damaging delicate internal components during the replacement process.

James Liu (Certified Watch Repair Technician, Precision Timepieces Inc.). The first step in replacing a Bulova watch battery involves carefully removing the case back without scratching or deforming it. After battery removal, it is advisable to clean the battery compartment contacts gently to maintain electrical conductivity. Finally, always verify the watch’s water resistance seals are intact before reassembling to prevent moisture ingress.

Sophia Martinez (Senior Technical Advisor, Bulova Watch Company). For Bulova watches, it is recommended to replace the battery every two to three years or when the watch shows signs of slowing down. Our technicians emphasize the importance of handling the movement with care and avoiding direct skin contact with the new battery to prevent corrosion. Professional servicing is advised if the watch has complex features or if you are unfamiliar with watch repair techniques.

Frequently Asked Questions (FAQs)

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

How can I identify the correct battery type for my Bulova watch?
Check the watch’s case back or user manual for the battery model number, or remove the old battery to read its code directly.

Is it necessary to remove the watch strap to replace the battery?
Not always; many Bulova watches allow battery replacement through the case back without removing the strap, but some models may require strap removal for better access.

How do I safely open the back of a Bulova watch?
Use a proper case opener tool or a small flat screwdriver to gently pry or unscrew the case back, taking care not to damage the watch or seals.

Can I replace the battery myself without damaging the watch’s water resistance?
Replacing the battery yourself may compromise water resistance if the seals are not properly reseated; it is recommended to have a professional service the watch to maintain its water resistance.

How often should I replace the battery in my Bulova watch?
Typically, Bulova watch batteries last between 1 to 3 years depending on the model and usage; replace the battery as soon as you notice the watch losing time or stopping.
Replacing a Bulova watch battery requires careful attention to detail and the right tools to ensure the watch remains in optimal condition. The process generally involves identifying the correct battery type, safely opening the watch case, removing the old battery, and installing the new one while avoiding damage to the internal components. Proper handling and cleanliness are essential to maintain the watch’s functionality and longevity.

It is important to note that while many Bulova watches can be serviced at home with basic watch repair tools, some models may have specific sealing mechanisms or water resistance features that require professional expertise. Ensuring the watch case is securely closed after battery replacement helps preserve its water resistance and overall durability. Additionally, disposing of the old battery responsibly contributes to environmental safety.

Ultimately, understanding the step-by-step procedure and exercising caution throughout the battery replacement process can extend the life of a Bulova watch and maintain its accuracy. When in doubt, consulting a professional watch technician is advisable to avoid potential damage and ensure the watch continues to perform at its best.

Author Profile

Avatar
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.