Learning how to change the battery on a Bulova watch is a useful skill that can save you a trip to the jeweler. Replacing the battery in your Bulova watch helps maintain its precision, but requires a specific case opener tool and a careful approach to avoid damaging the timepiece.
This guide provides clear, step-by-step instructions for a safe battery replacement. We will cover the tools you need, how to identify your watch case type, and the entire replacement process.
How To Change The Battery On A Bulova Watch
Before you start, it’s crucial to understand that Bulova watches are finely crafted instruments. A successful battery change depends on proper preparation. Rushing the process can lead to scratches, damage to the case back, or even harm to the watch’s internal movement.
Gathering the correct tools is the most important first step. Using improvised tools like knives or screwdrivers is a common mistake that often results in permanent damage to your watch.
Essential Tools You Will Need
Having the right tools on hand makes the job smoother and safer. You can find watch repair kits online or at hobby stores that contain most of these items.
- Case Opener Tool: This is non-negotiable. For screw-down case backs, you need a case wrench. For snap-off backs, a quality case knife or a pry tool is essential.
- Precision Screwdrivers: A set of jeweler’s screwdrivers for removing any screws securing the battery compartment or case back.
- Plastic Tweezers: Metal tweezers can cause a short circuit if they touch both battery terminals. Plastic or nylon tweezers are much safer.
- Magnifying Glass or Loupe: Helps you see small screws and the battery compartment clearly.
- New Battery: You must identify the correct battery type for your specific Bulova model. We’ll cover how to do this next.
- Soft Cloth and Holder: A microfiber cloth to work on and a watch holder or cushion to keep the watch secure.
- Gloves (Optional): Wearing finger cots or gloves can prevent fingerprints and oils from getting on the movement.
Identifying Your Bulova Watch Case Type
Bulova watches typically have one of three main case back designs. Identifying yours is key to choosing the right opening method.
Screw-Down Case Back
This back has notches or indentations around the edge. It threads onto the watch case and requires a case wrench to unscrew it. It is common in many Bulova models, especially those designed for water resistance.
Snap-Off Case Back
This is a smooth back that is pressure-fitted into the case. A small groove or lip is usually visible where you can insert a case knife. It requires prying it open carefully.
Screwed Case Back
This back is held on by small screws around the perimeter. You must remove these screws with a precision screwdriver before the back can be lifted off. Be very careful not to strip the screw heads.
Finding The Correct Battery Replacement
Using the wrong battery can damage your watch’s movement. The battery type is usually printed on the old battery itself, which you will see once you open the case. Common Bulova battery codes include SR626SW, SR920SW, or CR2025.
If you cannot see the old battery yet, you can find your watch’s model number. This is typically engraved on the case back. You can then search online using “Bulova [model number] battery type” or consult a battery cross-reference chart at a watch shop.
Always buy a fresh, high-quality battery from a reputable brand like Renata, Energizer, or Maxell. Old stock batteries may have reduced life.
Step-By-Step Battery Replacement Process
Now that you have your tools and new battery, follow these steps carefully. Work in a clean, well-lit area with a steady surface.
- Prepare Your Workspace: Lay down a soft cloth to protect the watch face. Place your tools within easy reach. Put on your gloves if you are using them.
- Open the Case Back:
- For Screw-Down Backs: Select the correct pins on your case wrench to fit the notches. Place the watch firmly in the holder. Turn the wrench counter-clockwise with steady pressure until the back loosens. You can then unscrew it by hand.
- For Snap-Off Backs: Insert your case knife into the groove. Gently twist the knife to create a small gap. Do not force it. Slide the knife around the edge, prying slightly as you go, until the back pops free.
- For Screwed Case Backs: Use the correctly sized screwdriver to remove each screw. Place the screws in a small container so you don’t lose them. Once all screws are out, the back should lift off easily.
- Remove the Old Battery: Once the case back is off, you’ll see the watch movement. Locate the battery, which is usually held in place by a small metal clamp. Note the orientation of the battery (+ side up). Use your plastic tweezers to gently release the clamp and lift the old battery out.
- Insert the New Battery: Before inserting, check that the new battery is the exact same type. Using your plastic tweezers, place the new battery into the compartment with the correct polarity. Ensure it sits flat and secure it with the metal clamp.
- Check the Watch Function: After the new battery is installed, the watch may start immediately. Gently move the watch to see if the second hand begins moving. If it doesn’t, the battery may not be seated properly or there could be another issue.
- Reseal the Case Back:
- For Screw-Down Backs: Ensure the rubber gasket is clean and seated properly. Hand-tighten the back onto the case, then use the case wrench to give it one final, firm turn. Do not overtighten.
- For Snap-Off Backs: Align the back with the case. Using a case press tool is ideal, but you can often press it firmly and evenly with the palms of your hands until you hear a click.
- For Screwed Case Backs: Place the back on and carefully reinsert and tighten each screw. Tighten them in a cross pattern to ensure even pressure.
Important Safety Tips And Precautions
Taking a few extra precautions will protect your investment and ensure a successful battery change.
- Always work over a soft surface to prevent parts from bouncing away if dropped.
- Never use metal tweezers to handle the battery directly. A short circuit can drain the new battery instantly or damage the movement’s circuitry.
- Inspect the case back gasket for any cracks or wear. A damaged gasket will compromise your watch’s water resistance. It’s a good idea to replace it if it looks worn.
- Avoid touching the movement or the inside of the case with your fingers. Skin oils can attract dust and cause corrosion over time.
- If you encounter significant resistance when opening the case, stop. Forcing it is likely to cause damage. It may be best to take it to a professional at that point.
When To Seek Professional Help
While many battery changes are straightforward, some situations warrant a visit to a watchmaker or jeweler.
- If your watch is a high-value, complicated, or vintage Bulova model.
- If the case back is stuck and will not budge with proper tool.
- If you open the case and see any signs of corrosion, moisture, or damage inside.
- If the watch has additional complications like a chronograph, which may have more complex mechanisms around the battery.
- If you change the battery and the watch still does not function, there may be an issue with the movement itself.
A professional can also perform a pressure test to ensure water resistance is maintained after resealing the case, which is a service you cannot do at home.
Caring For Your Bulova Watch After Battery Replacement
Proper care extends the life of both your watch and its new battery. A typical watch battery should last between 18 to 24 months, but this can vary.
Avoid exposing your watch to extreme temperatures, as heat can shorten battery life. If you have a watch with a screw-down crown, always ensure it is fully screwed in before any contact with water, even if you just had the battery changed.
Consider having the battery replaced proactively every two years to prevent potential leakage from an old, depleted battery, which can cause serious damage to the movement.
Frequently Asked Questions
How much does it cost to change a battery in a Bulova watch?
The cost varies. Doing it yourself costs the price of the battery and tools (usually under $30). A professional jeweler or watchmaker typically charges between $15 and $50, which often includes a new gasket and a pressure check.
Can I change my Bulova watch battery myself?
Yes, you can change the battery yourself if you have the correct tools and follow careful instructions. However, for valuable, vintage, or water-resistant models, professional service is recommended to maintain the watch’s integrity and warranty.
What tools do I need to open a Bulova watch back?
You need a case opener specific to your back type (wrench, knife, or screwdriver), plastic tweezers, a magnifier, and a soft cloth. Using improper tools is the most common cause of damage during DIY battery changes.
How do I know what battery my Bulova watch takes?
The best way is to open the case and read the number on the old battery. Alternatively, you can use the model number from the case back to look up the correct battery type in an online guide or at a watch repair shop.
Why did my Bulova watch stop working after a battery change?
If the watch stopped working after a DIY battery change, several things could be wrong. The battery may be inserted incorrectly, the movement could have been disturbed, or there might have been a pre-existing issue. Check the battery orientation first, and if that’s correct, consult a professional.