You can change a Michael Kors watch battery yourself if the case back is straightforward to open, but many models require a jeweler or authorized service center
Michael Kors watches fall into two categories: those with a screw-off case back (which you can open at home with the right tool) and those with a snap-on or glued case back (which need professional service). Before you attempt anything, check your watch model number and look up whether it has a screw-back or snap-back design. If it's a snap-back or the case back is sealed, a jeweler or Michael Kors service center can change the battery for $15 to $50, usually in one or two days. If it's a screw-back, you can do it yourself in about five minutes with a case opener tool and a fresh battery.
The most important step before you start is identifying which type of case back your watch has. Opening the wrong type can damage the watch or void your warranty. If you are unsure after inspecting the back of your watch, a quick search of your model number online or a call to a jeweler can confirm the type in minutes.
Key Takeaways
- Michael Kors watches with screw-off case backs can be opened at home with a case opener tool, a fresh battery, and tweezers.
- Watches with snap-on or glued case backs must go to a jeweler or authorized service center, which typically costs $15 to $50.
- You need to know your watch's battery type before you buy a replacement — common types are SR626SW, SR927SW, and CR2032, and they cost $3 to $8.
- If you open the case back yourself, keep the screws in a small container so you don't lose them, and avoid touching the battery terminals with bare fingers.
How to identify whether your watch case back is screw-on or snap-on
Look at the back of your watch closely. A screw-back has a thin groove or slot pattern around the entire edge of the case back — it looks like a metal disc with a circular seam. A snap-back is smooth with no grooves, and you may see a small notch or indentation where a tool would pry it open. If you're unsure, take a photo and search your watch's model number on the Michael Kors website or a watch forum — the product page usually shows the case back type.
If your watch is water-resistant (especially if it says "water resistant 50M" or higher), it almost certainly has a snap-back or sealed case, because screw-backs are less reliable for water sealing. In that case, do not attempt to open it yourself — you risk damaging the seal and letting water into the movement. Water damage to the internal mechanism is expensive to repair and may not be covered by warranty.
What you need to open a screw-back case at home
You need four things: a case opener tool (also called a case back opener or watch opener), the correct replacement battery, tweezers, and a small container for the screws. A case opener tool costs $5 to $15 and comes in two main types — a pin-style opener with a small prong that fits into the groove, or a knife-style opener with a flat blade. For Michael Kors watches, a pin-style opener usually works better because the grooves are often shallow.
Before you buy a battery, you must know the battery type your watch uses. Look inside the case back if you can see through it, or search your model number online — the spec sheet will list the battery type. Common Michael Kors watch batteries are SR626SW, SR927SW, CR2032, and SR621SW. Buy a fresh battery from a drugstore, supermarket, or online retailer — they cost $3 to $8. Avoid very cheap batteries from unknown sellers, because they may be old stock or counterfeit.
Step-by-step: opening the case back and replacing the battery
First, place your watch face-down on a soft cloth or towel so the crystal doesn't scratch. Locate the groove around the edge of the case back. Insert the pin of your case opener into the groove at the 12 o'clock position (the top of the watch) and gently turn the opener counterclockwise, as if you were unscrewing a jar lid. Do not force it — if it doesn't turn easily, you may have the wrong tool or the wrong position. Turn slowly until you feel the case back loosen, then lift it off with your fingers.
Once the case back is open, you will see the battery sitting in a small metal holder or clip. Use your tweezers to gently lift the old battery out — do not touch the battery terminals (the metal contacts) with your bare fingers, because skin oils can reduce contact. Note which side of the battery was facing up (usually the positive side, marked with a + symbol). Insert the new battery the same way, positive side up, and press it gently into the holder until it clicks or sits flush.
Replace the case back by aligning it with the case and turning the opener clockwise until it is snug. Do not over-tighten — you want it firm but not forced. If the watch has a crown (the knob on the side), make sure it is not in the way before you close the case back. Check that the watch is running by holding it to your ear and listening for a ticking sound, or by watching the second hand move.
When to take your watch to a professional instead
If your watch has a snap-back case, a glued case back, or you are not confident opening it yourself, take it to a jeweler or an authorized Michael Kors service center. Many jewelry stores, department stores, and watch repair shops offer battery replacement for $15 to $50, and the work usually takes one to two days. Some Michael Kors retail locations also offer battery service — call ahead to confirm they do and whether you need an appointment.
You should also have a professional replace the battery if your watch is vintage, has sentimental value, or is water-resistant. A jeweler can open the case back without damaging it and can re-seal it properly if needed. If you accidentally damage the case back or the seal while trying to open it yourself, a jeweler can usually repair it, but that will cost more than a straightforward battery change.
How long a Michael Kors watch battery typically lasts
Most quartz watch batteries last two to three years with normal wear. If you wear your watch every day, the battery may last closer to two years. If you wear it occasionally, it may last three years or longer. Some factors that shorten battery life are extreme temperature changes, leaving the watch in direct sunlight for long periods, and using the watch's extra features (like a stopwatch or alarm) frequently.
When the battery dies, the watch will straightforward stop running — there is no warning. If your watch has stopped and you have not replaced the battery in two or more years, the battery is almost certainly dead. If it has been less than a year, the battery may still be good, and the problem could be something else (like a broken movement or a loose connection), in which case a jeweler should diagnose it.
Frequently Asked Questions
Can I use any battery as long as it fits in the case?
No. You must use the exact battery type specified for your watch model. Using the wrong battery can cause the watch to run too fast or too slow, or not run at all. The battery type is usually printed on the case back or listed in the product manual. If you are unsure, ask a jeweler or contact Michael Kors customer service with your model number.
What should I do if I lose a screw from the case back?
If the case back has only one or two screws, you can usually buy a replacement screw from a jeweler or online watch parts supplier for $1 to $3. Bring the watch or a photo of the screw to the jeweler so they can match the size and thread. If the case back has no screws and you damaged it while trying to open it, a jeweler can usually replace the entire case back for $20 to $40.
Is it safe to open a water-resistant watch myself?
No. Water-resistant watches rely on a tight seal between the case back and the case body. If you open it yourself, you may damage the gasket (the rubber seal) or not re-seal it properly, and water can get inside and damage the movement. Always take a water-resistant watch to a professional for battery replacement.
How do I know if the new battery is working?
Hold the watch to your ear and listen for a ticking sound — a working quartz watch makes a soft tick-tick-tick sound. You can also watch the second hand move smoothly around the dial. If you hear nothing and the second hand does not move, the battery may not be inserted correctly, or the watch may have another problem. Try opening the case back again and checking that the battery is seated firmly in its holder.
Can I replace the battery if my watch is still under warranty?
If you open the case back yourself, you may void the warranty. Check your warranty card or contact Michael Kors customer service before you attempt a battery change. If the watch is still under warranty, it is safer to have Michael Kors or an authorized service center replace the battery so the warranty remains valid.