Open the case back without damaging the watch

The first step is removing the case back — the metal disc on the back of the watch. Most Invicta watches use a screw-down case back, which means you'll need a case back opener tool, not a knife or coin. A case back opener costs $8 to $15 and has a notched wheel that grips the grooves around the edge of the case back.

Place the watch face-down on a soft cloth or towel so the crystal (front) doesn't get scratched. Position the case back opener's notches into the grooves on the case back and turn counterclockwise slowly. Don't force it — if it won't budge, the grooves may be worn and you may need a jeweler's help. Once loose, unscrew it by hand the rest of the way.

Some newer Invicta models have a snap-on case back instead. These pop off with gentle pressure from a case knife (a flat tool with a small notch), inserted into the seam between the case and back. Work your way around the edge slowly rather than prying hard at one spot.

Key Takeaways

  • You will need a case back opener tool (for screw-down backs) or case knife (for snap-on backs), available at watch supply shops or online for under $20.
  • The battery type is printed on the old battery itself — common types are SR626SW, SR927SW, and SR920SW — so photograph it before removal.
  • Replace the battery with the positive side facing up, and do not touch the battery with bare fingers because oils can shorten its life.
  • Test the watch before closing the case back by pressing the crown (the knob on the side) to make sure it still runs.

Identify and remove the old battery

Once the case back is off, you'll see the battery held in place by a small metal clip or spring. Before you touch anything, take a close-up photo of the battery with your phone. The battery type is printed on its surface — you'll need this number to buy the correct replacement.

Gently lift the metal clip or spring holding the battery in place. Some clips slide sideways; others lift straight up. Move slowly and don't bend the clip more than necessary — if it breaks, the watch won't hold the new battery in place. Once the clip is clear, lift the old battery straight out and set it aside.

If the battery is stuck, a tiny dab of rubbing alcohol on the edge can help loosen it, but do not soak the movement. If it still won't budge, stop and take the watch to a jeweler rather than risk damaging the internal parts.

Install the new battery correctly

Before you touch the new battery, wash your hands and dry them completely. Oils from your skin can reduce battery life. If you do touch it, wipe it gently with a lint-free cloth.

Place the new battery into the same position as the old one, with the positive side facing up (the side with the + symbol). This is the most common orientation in Invicta watches, but if you photographed the old battery, check that photo to be certain. Slide or lower the metal clip back into place over the battery until it sits snugly.

Do not force the clip — it should settle with gentle pressure. If it won't sit flat, the battery may be upside down or the clip may be bent. Lift the clip and check the battery position before trying again.

Test the watch before closing it up

With the case back still off, press the crown (the knob on the side of the watch) once or twice. You should hear or feel a small click. Look at the second hand — it should start moving. If the watch doesn't start, the battery may be installed upside down or not making contact with the clip.

Lift the clip again and check that the battery is sitting flat and the positive side is up. Reseat it and test again. If the watch still doesn't run after two attempts, the battery may be defective or the movement may need professional service.

Once the watch is running, let it tick for 10 to 15 seconds to confirm it's working steadily. A watch that starts and then stops usually has a battery contact problem.

Close the case back securely

For a screw-down case back, align the grooves on the back with the grooves on the case and thread it in by hand first. Once hand-tight, use the case back opener to turn it clockwise until snug. Do not over-tighten — you want it firm enough that it won't unscrew on its own, but not so tight that you strip the grooves.

For a snap-on case back, line up any alignment marks on the back with marks on the case, then press down firmly around the edges until you hear or feel a click all the way around. Work your way around the perimeter rather than pressing hard at one spot.

After closing, hold the watch to your ear and listen for the tick. If you hear nothing, the battery may have shifted during closing. Open the case back again and reseat the battery.

Where to buy the right battery

Take the battery type number (like SR626SW) to a local jewelry store, watch repair shop, or pharmacy with a watch counter. Most carry common Invicta battery types in stock for $3 to $8. Online retailers like Amazon and eBay also stock them, but you'll wait for shipping.

Do not buy the cheapest battery you find — a name-brand battery from Energizer, Panasonic, or Renata will last longer and is worth the extra dollar or two. Some watches come with a one-year battery warranty, so check your paperwork before buying — you may be able to return to the seller for a free replacement.

Common mistakes that damage the watch

The most common error is installing the battery upside down. The positive side must face up. If you're unsure, photograph the old battery before removal and match the orientation exactly.

The second mistake is using a coin or knife instead of a proper case back opener. This strips the grooves and makes the case back impossible to seal properly, which lets moisture in and ruins the movement. A case back opener costs less than a repair.

The third mistake is touching the battery with bare fingers or letting it sit exposed to air for long periods. Oils and oxidation both reduce battery life. Keep the battery in its packaging until the moment you install it, and work quickly once the case back is open.

Finally, do not over-tighten the case back. You'll strip the threads and the back will either fall off or be impossible to open next time. Snug is enough.

Frequently Asked Questions

How often do Invicta watch batteries need to be changed?

Most Invicta batteries last one to three years depending on the watch model and how often you wear it. Watches with chronographs (stopwatch functions) or backlights drain batteries faster. If your watch stops suddenly, the battery is likely dead.

Can I take my Invicta to a jeweler instead of doing it myself?

Yes. A jewelry store or watch repair shop will change the battery for $10 to $25 plus the cost of the battery. This is worth it if you're uncomfortable opening the case back or if the watch is valuable and you want professional handling.

What if the watch still doesn't work after I put in a new battery?

First, open the case back and reseat the battery to make sure it's making contact. If it still doesn't run, the battery may be defective — try a different one. If a second battery doesn't work, the movement may need repair and you should take it to a jeweler.

Is it normal for the watch to stop when I open the case back?

Yes. Opening the case back doesn't stop the watch, but removing the battery does. The watch will restart once you install the new battery and press the crown.

Can I use any battery as long as the number matches?

The number must match exactly — SR626SW is not the same as SR626 or SR927SW. Different numbers have different voltages and sizes. Buy the exact type printed on your old battery.