You can change most Bulova watch batteries yourself with a case opener and a fresh battery, or take it to a jeweler for $15 to $50

A Bulova watch battery typically lasts three to five years before it stops powering the movement. When your watch stops, the first step is to open the case back — the metal cover on the rear of the watch. Most Bulova watches use a screw-down case back or a snap-fit back. If you have the right tool and a replacement battery that matches your model, you can do this at home in about ten minutes. If you are not comfortable opening the case or cannot identify the battery type, a jeweler or Bulova service center will do it for you.

The entire process involves identifying your case back type, gathering the correct tools, finding the right battery code, opening the back safely, swapping the old battery for the new one, and sealing the watch again. Each step takes only a few minutes if you have the right equipment. The hardest part is usually just knowing which tool to use and where to find the battery type.

Key Takeaways

  • Bulova watches use either a screw-down case back or a snap-fit case back; you need to know which type yours is before you start.
  • A case opener tool (also called a case wrench or case knife) is required to open the back safely without damaging the watch.
  • The battery type is printed on the old battery itself or listed in your watch manual — common types are SR626SW, SR927SW, and SR516SW.
  • Replacement batteries cost $3 to $10 online, but a jeweler will charge $15 to $50 total including labor.
  • If the watch still does not run after a new battery, the movement may need professional service.

Identify your case back type and gather tools

Before you open your Bulova, you need to know whether the case back is screw-down or snap-fit. Look at the back of the watch. If you see a thin line running around the edge and small notches or slots around the perimeter, it is a screw-down back. If the back appears smooth with no visible notches, it is likely a snap-fit back that pops off with gentle prying.

For a screw-down back, you will need a case wrench — a tool with notches or pins that fit into the slots on the case back. For a snap-fit back, you need a case knife or thin flat tool. Both tools are sold together in watch repair kits for $10 to $20 online. Do not use a regular screwdriver or knife, as these will scratch the case back and damage the watch. Lay out a clean, soft cloth on your work surface. This prevents the small parts from rolling away and protects the watch from scratches. Have your replacement battery ready before you open the case.

Find the correct battery type for your Bulova

The battery type is stamped on the old battery itself. Remove the old battery carefully and look at the top or side — you will see a code like SR626SW, SR927SW, SR516SW, or similar. Write this down or take a photo. If you cannot read the old battery, check your watch manual or search online for your specific Bulova model number.

Battery types vary by watch size and movement. A small dress watch might use an SR626SW, while a larger watch might use an SR927SW. Using the wrong battery can cause the watch to run too fast or too slow, or not run at all. Order the exact replacement from an online retailer or a local jewelry store. Batteries are inexpensive — typically $3 to $10 — but buying the wrong one wastes time and delays getting your watch running again.

Open a screw-down case back

Place the watch face-down on your cloth. Position the case wrench so the notches or pins align with the slots on the case back. Turn the wrench counterclockwise slowly and steadily. Do not force it — if it does not turn easily, check that the tool is fully seated in the slots. Once you feel it loosen, continue turning by hand until the back comes free.

Lift the case back straight up and set it aside on the cloth. You will now see the battery, usually held in place by a metal retaining clip or sitting loose in a small compartment. If there is a gasket (a thin rubber ring) around the edge of the case back, note its position so you can replace it correctly when you close the watch. Keep the case back and any small parts in a safe spot where they will not roll away or get lost.

Open a snap-fit case back

Place the watch face-down on your cloth. Locate the small gap or seam where the case back meets the case. Insert the case knife or thin flat tool gently into the gap at the edge. explore steady, even pressure — do not pry hard or you risk bending the case back. You should feel the back begin to lift slightly.

Once you feel movement, work your way around the edge, lifting gently at multiple points until the back pops free. Snap-fit backs are held by small clips inside, so they release suddenly once the clips clear. Lift the back straight up and set it on the cloth. Again, note any gasket or seal so you can replace it correctly when you close the watch back up.

Remove the old battery and install the new one

Look at how the old battery sits in the compartment. If it is held by a metal clip, gently lift one end of the clip and slide the battery out. If the battery is loose, straightforward lift it out with tweezers or your fingernail. Set the old battery aside.

Before you insert the new battery, check the polarity — the positive (+) side should face up toward you, and the negative (−) side should face down toward the movement. Slide the new battery into the compartment in the same position as the old one. If there is a metal clip, lower it gently over the battery to hold it in place. Do not force the clip — it should sit naturally once the battery is seated. Before you close the case, test the watch by pressing the crown (the knob on the side) gently to make sure the watch starts ticking. If it does not, remove the battery, check the polarity, and try again. If it still does not run, the movement may need professional service.

Close the case back and check the seal

If your watch has a gasket, make sure it is clean and seated properly in the groove around the case back. A dry or misaligned gasket can let moisture into the watch and damage the movement. Wipe it gently with a soft cloth if it looks dusty.

For a screw-down back, align the notches on the case back with the slots on the case, then turn the case wrench clockwise until the back is snug. Do not over-tighten — you should feel resistance, but you should not need to force it. A snug fit is enough to seal the watch. For a snap-fit back, align the case back with the case and press down firmly and evenly around the edges until you hear or feel a click. The back should sit flush with the case with no gap visible. If there is a gap, remove the back and check that the gasket is seated correctly, then try again.

When to take your Bulova to a professional

If you are not comfortable opening the case, do not have the right tools, or the watch does not run after you install a new battery, take it to a jeweler or an authorized Bulova service center. A jeweler will charge $15 to $50 depending on your location and the type of case back. An authorized Bulova service center may charge more but can also service the movement if something is wrong beyond the battery.

If your watch is vintage, rare, or has sentimental value, professional service is worth the cost. A jeweler can also check the water resistance seal and make sure the gasket is in good condition — something you cannot easily verify at home. They have specialized equipment to test whether the watch is truly sealed and whether the movement is working correctly after the battery change.

Frequently Asked Questions

How long does a Bulova watch battery last?

Most Bulova watch batteries last three to five years under normal use. The exact lifespan depends on the battery type, the watch movement, and how often you wear it. A watch you wear daily may drain the battery faster than one you wear occasionally.

Can I use any battery that fits in the compartment?

No. You must use the exact battery type specified for your watch. Using the wrong battery can cause the watch to run fast or slow, or damage the movement. Always match the code on the old battery or check your manual.

What if the watch still does not work after I put in a new battery?

First, remove the battery and check the polarity — the positive side must face up. If that does not work, the movement may have a problem that requires professional service. A jeweler can test the movement and repair it if needed.

Do I need to replace the gasket when I change the battery?

Not usually. The gasket sits in a groove on the case back and seals the watch when you close it. If it looks dry, cracked, or damaged, ask a jeweler to replace it — a new gasket costs $5 to $15 and keeps moisture out of the watch.

Is it cheaper to change the battery myself or go to a jeweler?

Changing it yourself costs $3 to $10 for the battery plus $10 to $20 for tools if you do not already have them. A jeweler charges $15 to $50 total. If you plan to change batteries on multiple watches, buying tools pays for itself quickly.