You can change an MK watch battery yourself with basic tools, or take it to a jeweler for $15 to $40

A Michael Kors watch battery typically lasts two to three years before it dies. When it stops, you have two routes: open the case yourself with a case opener and tweezers, or pay a jeweler or watch repair shop to do it. The DIY route costs $5 to $15 for a replacement battery and a case opener tool. The jeweler route costs $15 to $40 in labor, but you avoid the risk of damaging the case back or the gasket that keeps moisture out.

Which route you choose depends on whether your MK watch is water-resistant. If it is rated for water resistance (usually marked on the dial or case back as 3 ATM, 5 ATM, or higher), a jeweler is the safer choice — opening it yourself can break the seal and let water in. If it is not water-resistant, DIY is straightforward and takes about ten minutes.

Key Takeaways

  • MK watch batteries cost $5 to $15 and last two to three years before replacement is needed.
  • A case opener tool and tweezers are the only tools required for DIY battery replacement on non-water-resistant watches.
  • Water-resistant MK watches should be opened by a jeweler to avoid breaking the moisture seal.
  • Jewelers typically charge $15 to $40 for battery replacement and can usually complete the work the same day.
  • The correct battery type for your MK watch is printed on the old battery or listed in the watch manual.

What battery type your MK watch uses

Michael Kors watches use one of three common battery types: SR626SW, SR927SW, or SR616SW. The easiest way to find out which one is to remove the old battery and read the code stamped on it. If you do not want to open the case yourself, you can also check the original watch box or manual — most include the battery type.

If you have lost the manual and cannot see the old battery, call a Michael Kors store or a local jeweler with the watch model number (usually on the case back). They can tell you the correct battery in seconds. Do not guess — putting the wrong battery in will not damage the watch, but it will not work or will drain quickly.

DIY battery replacement for non-water-resistant watches

Start by checking the case back. If it says "water resistant" or lists an ATM rating (3 ATM, 5 ATM, 10 ATM), stop here and take it to a jeweler. If the case back is blank or says "stainless steel" only, you can proceed.

Gather a case opener tool (also called a case back remover), a small flathead screwdriver, tweezers, and the replacement battery. Case openers cost $8 to $12 on Amazon or at any jewelry supply store. Place the watch face-down on a soft cloth so you do not scratch it. Fit the case opener into the notch on the case back — most MK watches have a small slot or groove designed for this. Turn counterclockwise gently until the case back pops free. Do not force it; if it does not turn, you may have the wrong tool size.

Once the case back is off, note the position of the battery. Use tweezers to lift it straight out — do not let it touch the circuit board. Insert the new battery with the positive side (marked with a +) facing up, which is usually toward you. Press it gently into place. Screw the case back on by hand first, then use the case opener to tighten it snugly. Do not over-tighten; you will crack the case back.

When to take your MK watch to a jeweler

Any Michael Kors watch marked as water-resistant should be opened by a professional. Water-resistant watches have a gasket — a rubber or silicone ring — between the case and the case back. Opening it yourself can pinch or tear that gasket, and even a small tear will let water in and ruin the movement.

Jewelers have the right tools to remove the case back without damaging the gasket, and they replace the gasket as part of the service. Most jewelers can do the work while you wait, though some may need a day or two if they are busy. Call ahead to confirm they work on Michael Kors watches and ask the price before you leave the watch.

How much a new battery costs

A replacement battery for an MK watch costs $5 to $15 if you buy it yourself online or at a jewelry supply store. The battery itself is cheap — most are under $3 — but you are also paying for the case opener tool if you do not already own one.

At a jeweler, the total cost is usually $15 to $40. This includes the battery, labor, and in the case of water-resistant watches, a new gasket. Some jewelers charge a flat rate; others charge separately for the battery and the labor. Big-box retailers like Walmart and Target sometimes offer watch battery replacement for $10 to $15, but they may not have the gasket supplies for water-resistant watches.

What to do if the case back is stuck

If the case opener will not turn the case back, stop and do not force it. A stuck case back usually means the watch was over-tightened at the factory or by a previous repair. Forcing it can strip the grooves and make it impossible to open without damaging the case.

Take it to a jeweler instead. They have leverage tools and experience with stuck case backs and can usually open it without harm. This is one of the few situations where DIY is riskier than paying for a professional.

How long a new battery lasts

A new battery in an MK watch typically lasts two to three years with normal daily wear. If you wear the watch constantly and it has a lot of features — a date window, a second hand, or a backlight — the battery may drain faster and last only 18 to 24 months. If you wear it occasionally, it may last closer to three years.

Battery life also depends on the battery type. SR626SW batteries tend to last slightly longer than SR927SW in the same watch. When the battery dies, the watch will straightforward stop; there is no warning. Mark your calendar when you replace it so you know when to expect the next change.

Frequently Asked Questions

Can I use a different battery type if I cannot find the exact one?

No. Using the wrong battery type can cause the watch to run fast or slow, or not run at all. The battery type is matched to the circuit board and the watch movement. Always use the exact type listed on the old battery or in the manual.

Will opening my MK watch void the warranty?

Most Michael Kors watches are no longer under warranty after purchase, so opening it will not void anything. If your watch is still under warranty and you are unsure, contact Michael Kors customer service before opening it. A jeweler can also handle the replacement without affecting any remaining coverage.

What should I do with the old battery?

Do not throw it in the trash. Batteries contain chemicals and metals that are harmful to the environment. Take the old battery to a jeweler, a Best Buy, or a local recycling center — most accept watch batteries for free. Some pharmacies also have battery recycling programs.

How do I know if my watch is actually water-resistant?

Check the case back. If it says "water resistant," "water resistant to 3 ATM," or any similar marking, it is water-resistant. If the case back is blank or only says the brand name and model number, it is not. When in doubt, assume it is water-resistant and take it to a jeweler.

Can I replace the battery if the watch is currently broken or not running?

Yes. A dead battery is the most common reason an MK watch stops running. Replacing it will usually fix the problem. If the watch still does not run after a new battery is installed, the movement may be damaged, and a jeweler can diagnose the issue.