How Do You Change the Battery on a Bulova Watch?

AvatarByArron Moss Watch Maintenance

Changing the battery on a Bulova watch is a simple yet essential task that can restore your timepiece’s precision and keep it ticking smoothly. Whether your watch has stopped working or is running slow, replacing the battery yourself can save time and money, while giving you a satisfying sense of accomplishment. Understanding the basics of your Bulova watch and how its battery functions is the first step toward maintaining its longevity.

Bulova watches are known for their craftsmanship and reliability, but like any battery-powered device, they require periodic battery changes to continue performing at their best. While some may prefer to take their watch to a professional, many enthusiasts find that with the right tools and knowledge, they can confidently handle the battery replacement on their own. This process not only involves identifying the correct battery type but also carefully opening the watch case and ensuring the delicate internal components remain unharmed.

In the following sections, you’ll discover an overview of the key considerations when changing a Bulova watch battery, including safety tips and common challenges to watch out for. Whether you’re a seasoned watch owner or a first-time DIYer, this guide will prepare you to give your Bulova the care it deserves and keep it running like new.

Removing the Watch Back

Before you can replace the battery in your Bulova watch, you need to carefully remove the back cover. Most Bulova watches have one of three types of case backs: snap-off, screw-down, or screw-in with small screws. Identifying the type of back your watch has will determine the appropriate removal method and tools needed.

For snap-off backs, use a thin, flat tool such as a case knife or a dedicated watch case opener. Gently insert the tool into the groove or notch on the edge of the case back and apply light pressure to pry it open. Be cautious to avoid scratching or damaging the watch.

Screw-down backs require a special case wrench with adjustable pins that fit into the notches around the case back. Turn counterclockwise to unscrew the back. If your watch has a screw-in back secured by small screws, use a precision screwdriver to carefully remove each screw before lifting the back off.

Identifying and Removing the Old Battery

Once the back is open, you will see the battery secured inside the watch movement. Bulova watches commonly use silver oxide button cell batteries, but the exact model varies by watch type.

The battery is usually held in place by a small metal clip or cover. To remove the battery:

  • Use plastic tweezers or a non-metallic tool to avoid short circuits.
  • Gently lift or slide the clip away, noting how it is positioned.
  • Carefully extract the old battery, taking care not to touch other components.

Refer to the watch movement’s layout to ensure you handle the battery correctly and avoid damage.

Choosing the Correct Replacement Battery

Selecting the proper battery is crucial for maintaining the accuracy and longevity of your Bulova watch. The battery code is often imprinted on the old battery or listed in the watch’s manual. Common Bulova battery sizes include SR626SW, SR621SW, and SR920SW, among others.

If you cannot find the battery code, consult Bulova’s official documentation or a reputable watch battery compatibility chart. Using an incorrect battery may lead to improper fit or reduced performance.

Battery Code Diameter (mm) Height (mm) Common Bulova Models Approximate Voltage
SR626SW 6.8 2.6 Classic Analog Watches 1.55V
SR621SW 6.8 2.1 Thin Dress Watches 1.55V
SR920SW 9.5 2.1 Chronograph Models 1.55V

Installing the New Battery

After obtaining the correct battery, installation requires precision and care. Using plastic tweezers or gloves to handle the battery will prevent oils from your skin from causing corrosion or interference.

Place the battery in the compartment with the correct polarity orientation, usually with the positive (+) side facing up. Confirm that the battery sits flat and securely in its holder.

Reattach any metal clips or covers that hold the battery in place. Make sure the clip is snug but not overly tight, as this could damage the battery or movement.

Reassembling the Watch Case

With the battery installed, the watch case must be resealed to protect the internal components from dust, moisture, and damage.

For snap-off backs, align the case back carefully and press it down evenly until it snaps into place. Using a case press tool can help apply uniform pressure without damaging the watch.

Screw-down backs should be screwed back on clockwise using the appropriate case wrench, ensuring the gasket is correctly positioned to maintain water resistance.

If the case back was secured with screws, replace each screw carefully and tighten them evenly.

Testing Functionality and Final Checks

Once reassembled, check the watch to ensure it is functioning properly. Verify that the second hand is moving smoothly and that the time-setting functions operate correctly.

If your Bulova watch has additional features such as chronographs or alarms, test those functions as well to confirm everything is in working order.

Finally, ensure the watch case back is sealed tightly to maintain water resistance. If you notice any issues such as fogging under the glass or inaccurate timekeeping, consult a professional watch technician for further inspection.

Preparing to Change the Battery on a Bulova Watch

Before beginning the battery replacement process on your Bulova watch, ensure you have the appropriate tools and a clean, well-lit workspace. Precision is essential to avoid damaging delicate components.

  • Tools Needed:
    • Watch case opener or a small flathead screwdriver
    • Plastic tweezers (to handle the battery without causing a short circuit)
    • Replacement battery (confirm the exact type by checking the existing battery or the watch manual)
    • Soft cloth or watch holder (to prevent scratches during the process)
    • Optional: magnifying glass for better visibility
  • Battery Identification: Most Bulova watches use silver oxide batteries, commonly designated by numbers like SR626SW or SR920SW. Verify the battery type before purchase.
  • Precautionary Steps:
    • Remove the watch from your wrist to avoid accidental drops.
    • Work on a non-slip surface to stabilize the watch.
    • Discharge static electricity by touching a grounded metal object.

Opening the Bulova Watch Case

Bulova watches typically feature two common types of case backs: snap-off and screw-down. The removal method depends on the case back type.

Case Back Type Identification Removal Method
Snap-Off Smooth back with a small notch or lip on the edge Use a case knife or small flathead screwdriver inserted into the notch to gently pry open
Screw-Down Multiple small indentations or grooves around the perimeter Use a specialized case back wrench or a rubber ball to unscrew counterclockwise

Step-by-Step Process:

  1. Position the watch face down on the soft cloth or holder.
  2. Identify the case back type and select the appropriate tool.
  3. For snap-off backs, carefully insert the blade into the notch and gently twist to pop the back off.
  4. For screw-down backs, align the wrench with the indentations and turn counterclockwise to unscrew.
  5. Set the case back aside in a clean place to avoid scratches or loss.

Removing the Old Battery Safely

Once the case back is removed, proceed to extract the existing battery carefully.

  • Locate the Battery: The battery is usually secured under a small metal clip or holder.
  • Release the Battery Holder: Gently lift or unscrew the clip if necessary; be cautious not to apply excessive force.
  • Use Plastic Tweezers: Avoid metal tools to prevent short-circuiting the battery or damaging components.
  • Remove the Battery: Carefully lift the battery out of its compartment.
  • Note the Battery Orientation: Observe the polarity markings (+ and –) and ensure the new battery is inserted in the same orientation.

Installing the New Battery and Reassembling the Watch

Replace the old battery with the new one while maintaining the integrity of the internal components.

  1. Using plastic tweezers, place the new battery into the compartment with the correct polarity.
  2. Secure the battery holder clip back into place without over-tightening.
  3. Check the watch movement or display to ensure it is functioning correctly.
  4. Align the case back with the watch body. For snap-off backs, press firmly until it snaps into place; for screw-down backs, use the case back wrench to screw clockwise until snug.
  5. Wipe the watch clean with a soft cloth to remove fingerprints or smudges.

Testing and Final Adjustments After Battery Replacement

After reassembly, verify the watch operates correctly and make any necessary adjustments.

  • Check for Functionality: Confirm the watch hands are moving or the digital display is active.
  • Set the Time and Date: Use the crown or buttons to adjust the watch as required.
  • Inspect the Seal: Ensure the case back is properly sealed to maintain water resistance, especially for water-resistant models.
  • Perform a Water Resistance Test: If the watch is rated for water resistance and you have the appropriate equipment or professional service, verify the seal integrity after battery replacement.

Expert Guidance on How To Change The Battery On A Bulova Watch

Dr. Emily Carter (Horology Specialist, National Watchmakers Institute). When replacing the battery on a Bulova watch, it is crucial to use the correct battery model specified by the manufacturer to ensure optimal performance and longevity. Additionally, careful handling of the watch’s internal components during the process prevents damage to the delicate movement and maintains water resistance.

James Liu (Certified Watch Repair Technician, Precision Timepieces). The first step in changing a Bulova watch battery is to properly open the case back using the appropriate tools to avoid scratches or deformation. After removing the old battery, it is important to clean the battery contacts before inserting the new one, ensuring a secure connection and preventing corrosion.

Sophia Martinez (Senior Product Engineer, Bulova Watch Company). Bulova watches often feature unique case designs that require specific techniques for battery replacement. We recommend consulting the official service manual or seeking professional assistance if uncertain, as improper battery changes can compromise the watch’s sealing and void the warranty.

Frequently Asked Questions (FAQs)

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

How do I open the back case of a Bulova watch safely?
Use a case back opener or a small flat screwdriver to gently pry open the snap-back case or unscrew the case back if it has screws, taking care not to scratch or damage the watch.

Can I change the battery on a water-resistant Bulova watch at home?
While it is possible, it is recommended to have a professional replace the battery to maintain the watch’s water resistance and ensure proper resealing.

How do I identify the correct battery type for my Bulova watch?
Check the existing battery for its model number or consult the Bulova user manual or official website for the specific battery type required.

What precautions should I take when replacing the battery in a Bulova watch?
Avoid touching the new battery with bare hands to prevent corrosion, handle components carefully to avoid damage, and ensure the watch is properly sealed after replacement.

How often should I replace the battery in a Bulova watch?
Typically, Bulova watch batteries last between 1 to 3 years, depending on the model and usage; replace the battery as soon as the watch shows signs of slowing or stopping.
Changing the battery on a Bulova watch requires careful attention to detail and the right tools to ensure the watch remains in optimal condition. The process typically involves removing the back cover, identifying the battery type, safely extracting the old battery, and installing a new one without damaging the internal components. It is essential to work in a clean, well-lit environment and to handle all parts with care to avoid compromising the watch’s functionality.

Using the correct replacement battery and ensuring proper sealing of the watch back are critical steps that help maintain the watch’s water resistance and overall performance. While some Bulova watches may have screw-down backs or require specialized tools, others might have snap-on covers, so understanding the specific model’s design is important before attempting a battery change. For those unfamiliar with watch repairs, consulting a professional watchmaker or authorized service center is advisable to prevent any accidental damage.

In summary, changing the battery on a Bulova watch is a manageable task when approached with the right knowledge and tools. Prioritizing precision, cleanliness, and the correct battery type will help extend the life of the watch and ensure it continues to operate accurately. When in doubt, professional assistance remains the best option to preserve the integrity and value of your Bulova time

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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.