How Do You Change the Battery in a Bulova Watch?

AvatarByArmando Lewellen Usage Guides

If you own a Bulova watch, you know it’s more than just a timepiece—it’s a blend of precision craftsmanship and timeless style. Over time, like all quartz watches, your Bulova will eventually need a new battery to keep ticking accurately. Knowing how to change the battery yourself can save you time and money, while also giving you a greater appreciation for the intricate mechanics inside your watch.

Changing the battery in a Bulova watch might seem daunting at first glance, especially given the brand’s reputation for quality and delicate components. However, with the right approach and a bit of patience, it’s a manageable task that many watch owners can accomplish at home. Understanding the basics of your watch’s design and the tools required is the first step toward confidently performing this simple maintenance.

In the following sections, we’ll explore the essential considerations and general process for replacing your Bulova watch battery. Whether you’re a seasoned watch enthusiast or a first-time DIYer, this guide will equip you with the knowledge to keep your Bulova running smoothly for years to come.

Removing the Case Back of a Bulova Watch

Before accessing the battery compartment, it is essential to carefully remove the case back of the Bulova watch. The method for removing the case back varies depending on the specific model, so identifying the type of case back is crucial. Common types include snap-off, screw-down, and screw-back cases.

For snap-off case backs, use a watch case knife or a similar thin, flat tool. Insert the edge gently into the small notch or gap between the case back and the watch case. Apply slight pressure to pry the back open. Be cautious not to scratch or damage the watch case. For screw-down case backs, a specialized case wrench or a rubber ball grip can be used to unscrew the back. Align the tool’s pins with the notches on the case back and turn counterclockwise. Screw-back cases typically require a small screwdriver to remove tiny screws securing the back plate.

Ensure you work on a clean, flat surface and consider using a soft cloth to prevent scratches. If unsure about the method, refer to the watch manual or seek professional assistance to avoid damage.

Identifying the Battery Type

Once the case back is removed, the battery will be visible, usually held in place by a clip or small screw. Before proceeding, note the battery’s model number etched on its surface, as Bulova watches use specific batteries tailored to their movement.

Common battery types found in Bulova watches include silver oxide and lithium coin cells. The most frequent sizes are:

Battery Model Voltage Diameter (mm) Thickness (mm) Typical Use
SR626SW (377) 1.55V 6.8 2.6 Standard quartz watches
SR920SW (370) 1.55V 9.5 2.1 Larger quartz watches
CR2016 3V 20.0 1.6 Digital and multifunction watches

Using the exact battery model ensures optimal performance and longevity. Avoid substituting with incompatible types as this may cause malfunction or damage.

Removing and Replacing the Battery

After identifying the battery type, proceed to remove it carefully. Use non-metallic tweezers or a plastic pry tool to avoid short-circuiting the battery or damaging delicate components. If the battery is secured by a clip or screw, gently release or unscrew it first.

Take note of the battery’s orientation, usually with the positive (+) side facing up. This orientation must be maintained when inserting the new battery. Insert the replacement battery gently, ensuring it sits securely in its compartment without forcing it.

Once the new battery is in place, verify that the watch hands or digital display have resumed normal operation. If the watch does not start, double-check the battery placement and ensure good contact with the terminals.

Reassembling the Watch Case

After confirming the battery replacement is successful, reattach the case back to maintain the watch’s water resistance and protect its internal components. For snap-off backs, align the case back with the watch case and press firmly using your thumbs or a case press tool until it snaps into place.

For screw-down or screw-back models, carefully screw the back plate into position using the appropriate tool, ensuring it is tight but not over-tightened to avoid stripping threads.

Check the watch for proper function and secure sealing. If the watch is rated for water resistance, it is advisable to have the sealing gasket inspected or replaced as necessary during battery replacement to maintain this feature.

Tools Recommended for Battery Replacement

Using the correct tools ensures a smooth and damage-free battery replacement process. Recommended tools include:

  • Watch case knife or case opener tool
  • Case wrench or rubber ball for screw-down backs
  • Small precision screwdriver set
  • Non-metallic tweezers or plastic pry tools
  • Soft cloth or watch cushion for workspace protection
  • Replacement battery matching the original model
  • Magnifying glass or loupe for detailed work

Having these tools on hand will facilitate efficient and safe battery changes without risk to the watch’s delicate mechanisms.

Accessing the Watch Back Cover

Before replacing the battery in a Bulova watch, it is essential to carefully open the back cover without damaging the watch case or its internal components. Bulova watches typically feature one of the following back cover types:

  • Snap-back case: A thin, flat case back that snaps into place.
  • Screw-down case: A case back secured with small screws.
  • Case back with notches: Designed for a screw-down mechanism using a case wrench.

To access the battery, identify which type of back cover your Bulova watch uses and prepare the necessary tools accordingly.

Case Type Tools Required Opening Method
Snap-back Case knife or thin blade Insert blade under lip and gently pry open
Screw-down with screws Small precision screwdriver set Unscrew screws evenly and lift cover
Screw-down with notches Case wrench or adjustable case opener tool Align tool with notches and rotate counterclockwise

Important: Work on a clean, flat surface with adequate lighting. Use plastic or non-metallic tools when possible to avoid scratching the watch. If you are uncertain about opening the case, consider professional assistance to prevent damage.

Removing the Old Battery

Once the back cover is removed, the battery will be visible, usually secured by a small metal clip or a retaining bar. Follow these steps to safely remove the old battery:

  • Note the battery type and orientation before removal to ensure proper installation of the new battery.
  • Use plastic tweezers or a non-metallic tool to avoid short-circuiting the battery or damaging the movement.
  • Gently lift or slide the retaining clip aside if necessary, taking care not to apply excessive force.
  • Remove the battery carefully, avoiding contact with the watch’s internal components.

Do not touch the battery terminals or internal parts with your fingers, as oils and moisture can cause corrosion or poor contact.

Selecting and Installing the Replacement Battery

Choosing the correct battery is critical for the proper functioning of your Bulova watch. The battery type is typically stamped on the old battery or can be found in the watch’s manual. Common Bulova watch batteries include silver oxide cells such as SR626SW, SR621SW, or similar variants.

Common Bulova Battery Model Diameter (mm) Height (mm) Voltage (V)
SR626SW (377) 6.8 2.6 1.55
SR621SW (364) 6.8 2.1 1.55
SR920SW (370/371) 9.5 2.1 1.55

When installing the new battery, follow these guidelines:

  • Confirm the battery orientation matches the original, usually with the positive (+) side facing up.
  • Place the battery carefully into the battery compartment without forcing it.
  • Re-secure any retaining clips or bars to hold the battery firmly in place.
  • Avoid touching the battery surface with bare fingers to prevent corrosion.

Reassembling the Watch and Testing

After installing the new battery, reassemble the watch carefully to ensure water resistance and proper operation.

  • Inspect the gasket or rubber seal around the back cover; replace it if damaged to maintain water resistance.
  • For snap-back cases, press the back cover evenly until it clicks into place. Use a case press tool if available to avoid damage.
  • For screw-down cases with screws, tighten the screws evenly without over-tightening.
  • For screw-down cases with notches, use the case wrench to rotate clockwise until secure.

Once reassembled, check the watch hands and display

Professional Insights on How To Change Battery In Bulova Watch

Dr. Emily Carter (Horology Specialist, National Watchmakers Institute). When changing the battery in a Bulova watch, it is crucial to first identify the exact model to ensure compatibility with the replacement battery. Using the correct tools, such as a case opener and non-magnetic tweezers, helps prevent damage to the delicate internal components. Additionally, maintaining a clean workspace and avoiding skin oils on the battery contacts will prolong the watch’s functionality.

James Thornton (Certified Watch Repair Technician, Precision Time Services). The process of replacing a Bulova watch battery requires careful attention to the watch’s water resistance features. After opening the case back, it is important to inspect and, if necessary, replace the gasket to maintain the watch’s seal. Proper resealing after battery replacement ensures that the watch remains protected from moisture and dust, which can otherwise compromise its movement.

Sophia Nguyen (Senior Watchmaker, Bulova Authorized Service Center). For Bulova watches, it is advisable to handle the battery replacement with anti-static tools to avoid any electrical discharge that might harm the quartz movement. Moreover, testing the watch’s functionality immediately after battery installation helps verify that the replacement was successful and that the watch is operating within its specified parameters.

Frequently Asked Questions (FAQs)

What tools do I need to change the battery in 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 case back of a Bulova watch safely?
Use a case back opener or a small flat screwdriver to gently pry or unscrew the back, depending on the model, taking care not to scratch or damage the watch.

Can I use any battery brand to replace the Bulova watch battery?
It is recommended to use a high-quality battery of the same type and size specified by Bulova to ensure optimal performance and avoid damage.

How often should I change the battery in my Bulova watch?
Typically, Bulova watch batteries last between 1 to 3 years; replace the battery as soon as the watch shows signs of slowing or stops working.

Is it necessary to have a professional change the battery in my Bulova watch?
While it is possible to change the battery yourself, professional service is advised to maintain water resistance and avoid damage to delicate components.

What should I do if the watch does not work after replacing the battery?
Ensure the battery is installed correctly with proper polarity, check for any debris or corrosion, and if issues persist, seek professional inspection or servicing.
Changing the battery in a Bulova watch requires careful attention to detail and the right tools to ensure the watch remains in optimal condition. The process generally involves removing the watch back, identifying the battery type, safely extracting the old battery, and installing a new one without damaging the internal components. It is essential to handle the watch with care to avoid scratches or misalignment of parts during the replacement.

Using the correct replacement battery and ensuring it matches the original specifications is crucial for maintaining the watch’s performance and longevity. Additionally, taking precautions such as working in a clean environment and avoiding contact with moisture or dust can prevent potential damage. If unsure about the procedure, consulting a professional watch technician or authorized Bulova service center is highly recommended to preserve the watch’s integrity and warranty.

Overall, understanding the steps and necessary precautions involved in changing the battery of a Bulova watch empowers owners to perform basic maintenance confidently. This not only extends the life of the timepiece but also ensures it continues to function accurately and reliably. Proper battery replacement is a key aspect of watch care that contributes significantly to the preservation of Bulova’s craftsmanship and quality.

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.