You can change a Fossil watch battery yourself with basic tools, or take it to a jeweler or Fossil store

A Fossil watch battery typically lasts two to three years before it stops holding a charge. When your watch stops, the battery is usually dead—not the watch itself. You have two options: open the case back yourself with a case opener tool and swap in a new battery (usually a CR2032, CR2025, or similar coin cell), or pay a jeweler or Fossil retailer to do it for you. The DIY route costs $5 to $15 for the battery and tool; a professional service runs $15 to $40 depending on where you go.

Most people can complete a battery swap in five to ten minutes once they have the right tools and know which battery their watch uses. The process is straightforward: identify the battery type, gather a case opener tool, pop or unscrew the case back, remove the old battery, install the new one, and seal it back up. If you are uncomfortable opening the watch yourself, a jeweler, Fossil store, or even some pharmacies will change it for a small fee.

Key Takeaways

  • Most Fossil watches use a coin-cell battery (CR2032 or CR2025) that you can buy at any drugstore or online for a few dollars.
  • You need a case opener tool (also called a case back opener or watch tool) to pry off the back of the watch without damaging it.
  • The entire battery swap takes five to ten minutes once you have the right tools and know which battery your watch uses.
  • If you are uncomfortable opening the watch yourself, a jeweler, Fossil store, or even some pharmacies will change it for a small fee.
  • Write down the old battery number before you remove it so you buy the exact same type as a replacement.

Find out what battery your Fossil watch uses

Before you buy a replacement, you need to know which battery is inside. The easiest way is to check the Fossil website or your watch manual—search for your watch model number and "battery type." If you do not have the manual, look at the back of the watch case. Many Fossil watches have the battery type printed or engraved on the case back itself, often as a code like CR2032, CR2025, or SR626SW.

If the case back is blank or hard to read, you can open it and look at the old battery directly. The battery itself is stamped with its model number. Write that number down before you remove it. Common Fossil watch batteries are CR2032 (the most frequent), CR2025, CR2016, and SR626SW. You can buy any of these at a drugstore, supermarket, or online for $3 to $8.

Gather the tools you need

You will need a case opener tool (also called a case back opener or watch opener). This is a small metal tool with a flat blade or notch designed to fit into the groove on the back of your watch case. Do not use a regular flathead screwdriver—it can slip and scratch the watch. A case opener costs $5 to $15 and works on most watches. You can find them at jewelry supply stores, online retailers, or sometimes at jewelry counters in department stores.

You will also need a clean, flat work surface and good lighting. A magnifying glass or jeweler's loupe is helpful but not required. Lay down a soft cloth or paper towel so you do not lose small parts if they fall, and so you do not scratch the watch. If your watch has screws on the case back, you will also need a tiny Phillips head screwdriver, usually a #0 or #00 size.

Open the case back without damaging the watch

Look at the back of your watch. Most Fossil watches have a case back that screws off or pops off. If it has a small notch or groove around the edge, it is designed to be opened with a case opener tool. Fit the blade or notch of your case opener into the groove, then gently turn counterclockwise (to the left) or pry upward, depending on the tool design. Go slowly—you are not forcing it, just explore steady pressure.

If the case back has small screws instead of a groove, you will need a tiny screwdriver (usually a #0 or #00 Phillips head). Unscrew all the screws and set them in a small dish so you do not lose them. Once the case back is off, set it aside in a safe place. Do not force anything—if it is not budging after gentle pressure, stop and take it to a jeweler instead.

Remove the old battery and install the new one

Once the case back is open, you will see the battery sitting in a small metal holder or clip. It is a flat, round coin about the size of a dime. Note which side is facing up (usually the positive side is marked with a + symbol). Gently pry the old battery out with a plastic tool, a wooden toothpick, or the edge of your case opener. Do not use a metal tool directly on the battery, as this can cause a short circuit.

Before you install the new battery, check that it is the same model number as the old one. Slide the new battery into the holder with the positive side (+) facing up, the same way the old one was oriented. You should hear or feel a small click as it seats. Do not force it—it should sit flat and snug in the holder.

Close the case back and test the watch

If your case back screws on, line up the screw holes and turn the screws clockwise (to the right) with your tiny screwdriver. Tighten them snugly but do not over-tighten, or you may strip the threads. If your case back pops on, fit the groove back into the case opener and turn clockwise, or press down firmly until you hear a click. The case back should sit flush with the watch body with no gaps.

Once the case back is sealed, press the crown (the knob on the side of the watch) or move the hands to see if the watch is running. If it starts ticking, the battery is working. If it does not, the battery may not be seated properly—open the case back again and check that it is sitting flat in the holder. If it still does not work after a second try, the watch may have a deeper problem, and a jeweler can diagnose it.

When to take your Fossil watch to a professional

If you are not comfortable opening the watch yourself, or if you do not want to buy tools you will use only once, a jeweler or Fossil store will change the battery for you. Most charge $15 to $40 depending on the watch model and location. Some pharmacies (like CVS or Walgreens) also offer battery replacement services for a small fee. Call ahead to confirm they work on watches, and ask whether they need an appointment.

You should also take your watch to a professional if the case back is stuck, if you see corrosion or damage inside the watch, or if the watch does not start after you install a new battery. A jeweler can check for water damage, clean the contacts, or replace a faulty battery holder if needed.

Frequently Asked Questions

Can I use any CR2032 battery, or does it have to be a specific brand?

Any CR2032 will work as long as it is the correct model number for your watch. Brand does not matter much—Energizer, Duracell, and generic versions all perform the same. Buy from a reputable source (drugstore, supermarket, or established online retailer) to avoid counterfeit batteries.

What if I lose a screw when I open the case back?

If your watch has screws and you lose one, a jeweler can replace it for a few dollars. Keep the remaining screws in a safe place while you work. If you are worried about losing them, use a small magnet or a piece of tape to hold them in place on your work surface.

How do I know if the battery is installed correctly?

The battery should sit flat and snug in its holder with no rocking or movement. The positive side (marked with a +) should face up. If the watch does not start after you close the case back, open it again and check that the battery is seated all the way down and facing the right direction.

Is it safe to change the battery myself, or could I damage the watch?

It is safe if you work slowly and use the right tools. The main risks are scratching the case back or losing screws. Use a case opener tool instead of a screwdriver, work on a soft surface, and do not force anything. If you are nervous, a jeweler can do it quickly and cheaply.

Why did my watch stop if the battery is still there?

The battery may be dead even though it is still in the watch. Coin-cell batteries lose power gradually over two to three years. If the watch has been sitting unused for a long time, the battery may have drained completely. A new battery should restart it.