You can change a Fossil watch battery yourself with basic tools, or take it to a jeweler or Fossil store
Fossil watches use standard coin-cell batteries — usually CR2032, CR2025, or SR626SW depending on the model — that you can replace at home if you have a case opener and a few minutes. The process is straightforward: open the case back, note which battery is inside, remove it, and install a fresh one. If you do not want to open the watch yourself, a jeweler or Fossil retailer will do it for $10 to $25, often while you wait.
The choice between doing it yourself and having someone else do it depends on whether you own a case opener, how confident you feel working with small parts, and whether your watch is under warranty. Fossil does not void the warranty for battery replacement, but opening the case yourself can damage the gasket that keeps water out, which may cost more to repair later.
Key Takeaways
- Fossil watches use standard coin-cell batteries that are inexpensive and widely available at drugstores, electronics retailers, and online.
- A case opener tool costs $5 to $15 and is reusable, so if you plan to replace batteries in multiple watches, buying one pays for itself quickly.
- Opening the case yourself risks damaging the rubber gasket that seals water out, so if your watch is water-resistant, a jeweler's $10 to $25 fee may be worth the protection.
- Fossil stores and most jewelry shops can replace the battery in 10 to 30 minutes without an appointment at many locations.
What battery your Fossil watch uses
The battery type depends on your watch model. Most Fossil watches use a CR2032 (the most common), but some use CR2025, SR626SW, or other sizes. The easiest way to find out is to check your watch manual or look at the Fossil website by entering your model number. If you do not have the manual, you can also open the case back and read the battery itself — the type is printed on it.
You can buy replacement batteries at any drugstore in the vitamin aisle, at electronics stores like Best Buy, or online at Amazon. A single battery costs $2 to $5. Buy the exact type your watch uses; putting in the wrong size will not fit or will not power the watch correctly.
Opening the case back yourself
You will need a case opener tool, which looks like a small metal disc with a slot or notch cut into the edge. They cost $5 to $15 on Amazon or at jewelry supply shops. Some jewelers will lend you one if you ask, or sell you a cheap one.
Locate the slot or notch on the case back — it is usually on the edge, sometimes marked with a small line or arrow. Insert the case opener into the slot and turn counterclockwise gently but firmly. The back should pop off. If it does not budge after a few tries, stop and take it to a jeweler; forcing it can crack the case.
Once the back is open, you will see the battery sitting in a small metal holder or clip. Note its position and orientation — the positive side (marked with a + or a flat side) should face up. Remove the old battery by gently prying it out with a plastic tool or your fingernail. Do not use metal tools, which can scratch the inside of the watch.
Installing the new battery
Place the new battery into the holder with the positive side facing up, matching the position of the old one. Press it down gently until it clicks or sits flush. The watch should power on when ready if the battery was dead; if it does not, the battery may be installed upside down or the watch may have another issue.
Before closing the case back, check that the rubber gasket — a thin ring around the inside edge of the case — is clean and in place. If it looks dried out, cracked, or is missing, the watch may no longer be water-resistant after you close it. In that case, take it to a jeweler to replace the gasket at the same time.
Closing the case back
Align the case back with the watch body so the slot or notch lines up with the opener tool. Insert the tool and turn clockwise firmly until you feel resistance. Do not over-tighten; you should feel a solid click or snap, not a grinding sensation. If it grinds or feels stuck, stop and check that the gasket is not pinched.
Test the watch by checking that it keeps time and that the buttons (if any) still work. If the watch is water-resistant, do not submerge it for at least 24 hours to allow the gasket to settle.
Taking your watch to a jeweler or Fossil store
Most jewelry shops, department store jewelry counters, and Fossil retail locations offer battery replacement. Call ahead to confirm they service Fossil watches and ask the cost — it is usually $10 to $25. Many places can do it while you wait, though some may take a few days if they are busy.
A jeweler will also inspect the gasket and replace it if needed, which protects the water resistance of your watch. This is the safer choice if your watch is water-resistant or if you are not comfortable opening it yourself. Bring your watch and be prepared to leave it for a short time or wait in the store.
What to do if the watch still does not work after battery replacement
If you installed a new battery and the watch still does not turn on, the battery may be installed upside down — remove it and flip it. If that does not work, the battery contacts inside the watch may be corroded or dirty. You can try gently cleaning the metal contacts with a dry cotton swab, then reinstalling the battery.
If the watch still does not work after that, the problem is likely not the battery. The movement (the internal mechanism) may be damaged, or the watch may need professional service. Take it to a jeweler or Fossil store for diagnosis; they can tell you whether repair is worth the cost.
Frequently Asked Questions
Can I use any CR2032 battery, or does it have to be a Fossil brand?
Any standard CR2032 battery works in a Fossil watch. You do not need a Fossil-branded battery. Duracell, Energizer, and store brands all work the same way. The only thing that matters is the type number — CR2032, CR2025, or whatever your watch uses.
Will opening the case back void my warranty?
Fossil does not void the warranty for battery replacement. However, if you damage the gasket or case while opening it, that damage is not covered. If your watch is still under warranty and you are unsure, have a jeweler do it instead.
How often do Fossil watch batteries need to be replaced?
Most Fossil watch batteries last two to three years with normal use. If you wear the watch every day, it may need replacement sooner. If you wear it occasionally, it may last longer. When the watch stops or runs slow, the battery is usually dead.
What if I lose the case back after I open it?
Contact Fossil customer service with your watch model number and ask for a replacement case back. They can usually send one for $10 to $30 depending on the model. In the meantime, do not wear the watch or expose it to water, as it is no longer sealed.
Is it safe to open a water-resistant Fossil watch myself?
It is safe if you are careful, but you risk damaging the gasket that keeps water out. If your watch is water-resistant and you are not confident, a jeweler's fee is worth the protection. If your watch is not water-resistant, opening it yourself is low-risk.