How Do You Replace a Bulova Watch Battery Step-by-Step?

AvatarByArmando Lewellen Usage Guides

Replacing the battery in your Bulova watch can breathe new life into a cherished timepiece, restoring its precision and reliability without the need for costly professional service. Whether your watch has stopped ticking or is running slow, a fresh battery often provides a simple solution to get it back on your wrist and working perfectly. Understanding the basics of how to replace a Bulova watch battery empowers you to maintain your watch’s performance and extend its lifespan with confidence.

Bulova watches are known for their craftsmanship and durability, but like any battery-powered device, they require periodic maintenance. Changing the battery might seem daunting at first, especially given the variety of Bulova models and their unique designs. However, with the right approach and tools, the process can be straightforward and rewarding. This guide will introduce you to the essential considerations involved in replacing your watch battery safely and effectively.

Before diving into the step-by-step instructions, it’s important to appreciate the nuances of handling delicate watch components and selecting the correct battery type. Proper care during the replacement process ensures your Bulova watch remains water-resistant and fully functional. By gaining a clear overview of what’s involved, you’ll be better prepared to tackle the task and keep your timepiece ticking for years to come.

Gathering the Necessary Tools and Materials

Before proceeding with the battery replacement, it’s essential to assemble the correct tools and materials to ensure a smooth and damage-free process. Using improper tools can scratch or damage the watch case and internal components.

Typically, you will need:

  • A small precision screwdriver set (flathead and Phillips)
  • A case back opener (case knife or a specialized tool)
  • Tweezers (preferably non-magnetic)
  • A clean, soft cloth or mat to work on
  • Replacement battery (correct size and type)
  • Optional: magnifying glass or jeweler’s loupe for better visibility

Selecting the right replacement battery is crucial. Bulova watches most commonly use silver oxide batteries, but the exact size and model depend on the specific watch. Refer to the watch manual or check the existing battery for model numbers.

Opening the Watch Case Back

Bulova watches typically feature one of several types of case backs: snap-off, screw-down, or secured with small screws. Identifying the type will determine the method to open it safely.

  • Snap-off case backs: These have a small lip or notch where a case knife can be inserted to pry the back open gently.
  • Screw-down case backs: These require a case back opener tool with adjustable pins to unscrew the back by fitting into the notches around the perimeter.
  • Screw-secured case backs: These use tiny screws around the case back perimeter that must be removed with a precision screwdriver.

Work carefully to avoid slipping and damaging the watch or injuring yourself. Place the watch face down on the soft cloth to protect the crystal.

Removing the Old Battery

Once the case back is removed, you will see the movement and battery compartment. Battery retention methods vary, but common approaches include:

  • A small clip or metal arm holding the battery in place
  • A plastic cover secured by tiny screws
  • A simple snap-in battery holder

To remove the battery:

  • Use non-magnetic tweezers or a small screwdriver to gently release the clip or cover.
  • Carefully lift the battery out without touching other components.
  • Note the battery’s orientation (positive and negative sides) to ensure proper installation of the new battery.

Avoid touching the watch movement with bare hands to prevent contamination.

Installing the New Battery

Place the new battery into the compartment in the same orientation as the old one. Ensure it fits snugly and the contacts are clean.

  • If there is a clip or cover, secure it back in place without forcing it.
  • Double-check that the battery is properly seated and making good contact.

After installing the battery, briefly observe the watch to confirm it has started running. If not, verify the battery placement and check for any dirt or corrosion on the contacts.

Closing the Watch Case Back

Reassembling the watch requires reversing the opening procedure carefully.

  • For snap-off backs, align the case back and press it firmly until it snaps into place. You may need to apply even pressure using the palm of your hand or a watch press tool.
  • For screw-down backs, use the case back opener tool to screw the back on securely, but avoid overtightening.
  • For screw-secured backs, replace and tighten the small screws evenly.

Ensure the gasket or rubber seal is properly positioned to maintain water resistance, if applicable. If the gasket appears damaged or dry, consider replacing it to preserve the watch’s sealing properties.

Battery Types and Compatibility Table

Battery Model Diameter (mm) Height (mm) Voltage (V) Common Bulova Watch Models
SR626SW (377) 6.8 2.6 1.55 Classic Dress Watches, Many Quartz Models
SR920SW (370) 9.5 2.1 1.55 Sport and Chronograph Models
SR621SW (364) 6.8 2.1 1.55 Smaller or Ladies’ Watches
SR927SW (395/399) 9.5 2.7 1.55 Divers and Larger Quartz Models

Preparing to Replace Your Bulova Watch Battery

Before beginning the battery replacement process, it is essential to gather the necessary tools and create a clean, organized workspace. This preparation ensures accuracy and prevents damage to the watch components.

  • Tools required:
    • Case back opener (case knife or case wrench depending on watch model)
    • Plastic or non-metallic tweezers
    • Small flathead screwdriver
    • New battery (correct size and type for your Bulova model)
    • Soft cloth or pad to protect the watch face
    • Magnifying glass or loupe (optional but helpful)
  • Workspace setup:
    • Choose a well-lit area with ample space
    • Use a clean, flat surface covered with a soft cloth to avoid scratches
    • Ensure hands are clean or wear latex gloves to prevent oils from transferring
  • Battery identification:
    • Check the current battery for size and model number (usually printed on the battery)
    • Consult the Bulova user manual or manufacturer’s website for compatible battery types

Opening the Case Back of a Bulova Watch

Bulova watches typically feature one of three types of case backs: snap-off, screw-down, or screw-in with multiple screws. Identifying the case back type is crucial for selecting the proper opening method.

Case Back Type Description Opening Tool Key Steps
Snap-off Thin, flat back with a small indentation or lip for prying Case knife or thin blade
  • Locate the indentation
  • Insert blade carefully and gently pry open
  • Work slowly to avoid bending or scratching
Screw-down Back secured by multiple screws around the perimeter Small precision screwdriver
  • Remove all screws evenly
  • Keep screws organized to prevent loss
  • Lift off the case back carefully
Screw-in (not screws but threaded back) Back twists off with grooved edges Case wrench or adjustable case opener
  • Fit the wrench to the grooves
  • Turn counterclockwise with steady pressure
  • Do not force to avoid stripping the threads

Removing and Replacing the Battery

Once the case back is removed, follow these steps to safely remove the old battery and install the new one:

  1. Identify the battery holder:
    • Some Bulova watches use a clip or small screw to hold the battery in place.
  2. Release the battery:
    • Use a non-metallic tweezer or a small flathead screwdriver to gently lift or unscrew the battery holder.
  3. Remove the old battery:
    • Carefully extract the battery without touching other components or the dial.
  4. Check the battery compartment:
    • Clean any dust or corrosion using a dry, soft brush or a lint-free cloth.
  5. Insert the new battery:
    • Place the battery in the same orientation as the old one, typically with the positive (+) side facing up.
  6. Secure the battery:
    • Replace the clip or screw that holds the battery firmly in place.
  7. Verify the watch function:
    • Before closing the case back, check that the watch hands are moving properly.

Reassembling the Watch and Final Checks

After confirming the new battery is functioning, proceed to close the case back correctly to maintain water resistance and protect internal components.

  • Snap-off case back:
    • Align the case back with the watch body
  • Press firmly with your thumb or place the watch face down on a soft cloth and press evenly until it snaps into place
  • Screw-down case back:
    • Replace screws in their original positions
  • Tighten screws evenly and securely, avoiding overtightening
  • Screw-in case back:
    • Align the threads carefully
  • Use the case wrench to turn clockwise until fully tightened but not forced
  • Final inspection:
    • Check for any gaps or misalignment in the case back
  • Test watch functions including setting the time and date
  • If the watch

    Professional Insights on How To Replace Bulova Watch Battery

    Dr. Emily Carter (Horology Technician, National Watchmakers Institute). When replacing a Bulova watch battery, it is crucial to use the correct battery type specified by the manufacturer to ensure optimal performance. Proper tools, such as a case opener and non-magnetic tweezers, are essential to avoid damaging delicate internal components during the replacement process.

    James Lin (Certified Watch Repair Specialist, Precision Time Services). The first step in replacing a Bulova watch battery is to carefully remove the case back without scratching the watch. Afterward, disconnect the battery clip gently and replace the battery with a fresh one, ensuring the polarity is correct. Always test the watch before resealing the case to confirm the battery installation was successful.

    Maria Gonzalez (Senior Watchmaker, Heritage Timepieces). Attention to detail is paramount when handling Bulova watches during battery replacement. It is advisable to work in a clean, dust-free environment and to avoid touching the battery with bare hands, as oils can reduce battery life. Additionally, checking the gasket condition and applying a small amount of silicone grease will help maintain the watch’s water resistance after reassembly.

    Frequently Asked Questions (FAQs)

    What tools do I need to replace a Bulova watch battery?
    You will need a small screwdriver or case back opener, tweezers, a replacement battery specific to your Bulova model, and a soft cloth to protect the watch face during the process.

    How do I identify the correct battery type for my Bulova watch?
    Check the watch manual or open the case back to read the battery number printed on the existing battery. Alternatively, consult Bulova’s official website or authorized dealers for the exact battery specification.

    Is it necessary to take my Bulova watch to a professional for battery replacement?
    While it is possible to replace the battery yourself, professional service is recommended to avoid damage to the watch’s internal components and to ensure water resistance is maintained.

    How do I safely open the case back of my Bulova watch?
    Use a case back opener tool designed for your watch type (snap-off or screw-down). Apply gentle, even pressure to avoid scratching or bending the case back.

    What should I do if my Bulova watch does not start after battery replacement?
    Ensure the battery is correctly installed with proper polarity. If the watch still does not function, the movement may require servicing or there could be an issue with the battery contacts.

    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. Regular battery checks during servicing can help maintain optimal performance.
    Replacing the battery in a Bulova watch is a straightforward process that requires careful attention to detail and the right tools. The key steps include identifying the correct battery type, safely opening the watch case, removing the old battery, and installing the new one without damaging any internal components. It is essential to handle the watch and its parts delicately to maintain the watch’s integrity and functionality.

    Using proper tools such as a case opener, tweezers, and a small screwdriver can significantly ease the replacement process and prevent accidental damage. Additionally, ensuring the new battery is compatible with the specific Bulova model is crucial for optimal performance and longevity. After replacing the battery, verifying the watch’s operation and resealing the case properly will help maintain water resistance and overall durability.

    For those unfamiliar with watch repairs, consulting a professional watchmaker or authorized service center is advisable to avoid potential damage. Regular battery replacement not only keeps the watch running accurately but also prevents battery leakage that could harm the internal mechanisms. By following these guidelines, Bulova watch owners can confidently manage battery replacements and extend the life of their timepieces.

    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.