Opening an AirTag takes 15 seconds and requires no tools

An AirTag opens by twisting the stainless steel back plate counterclockwise. Hold the white plastic front in one hand and rotate the metal back about a quarter turn until it stops — you will feel it loosen. The back plate then lifts straight off, exposing the battery compartment and the small circuit board inside.

The entire process is designed to be done by hand. You do not need a screwdriver, coin, or any tool. If you are forcing it or the back plate is not moving, you are likely twisting the wrong direction or gripping too hard. A gentle, steady counterclockwise turn is all that is needed.

Key Takeaways

  • Twist the metal back plate counterclockwise with steady pressure until it stops, then lift it straight off.
  • AirTags use a standard CR2032 coin cell battery, which you can buy at any pharmacy, grocery store, or electronics retailer for a few dollars.
  • The battery slides out of its slot — do not force it, and note which side faces up before you remove it.
  • After inserting the new battery with the positive side facing up, twist the back plate clockwise until it clicks to seal the AirTag.
  • Your AirTag will reconnect to your iPhone automatically once the battery is installed and the case is closed.

Removing the old battery

Once the back plate is off, you will see a small circular battery sitting in a shallow metal slot. The battery is a CR2032 — a coin cell about the size of a dime. It does not require any tool to remove; you can slide it out with your fingernail or the edge of a plastic card.

Before you remove it, note which side is facing up. The positive side (marked with a + symbol) should be facing toward you. When you insert the new battery, it must go in the same way. If you install it upside down, the AirTag will not work until you flip it.

Set the old battery aside. Do not throw it in the trash — CR2032 batteries contain lithium and should be recycled. Most pharmacies and electronics stores have battery recycling bins near the checkout.

Choosing and installing the replacement battery

You need a CR2032 battery. This is a standard size sold everywhere — drugstores, supermarkets, Target, Walmart, Amazon, and any electronics shop carry them. A single battery costs between $2 and $5 depending on the brand and where you buy it. You do not need a special Apple battery; any CR2032 works.

Remove the new battery from its packaging and slide it into the slot with the positive side (the + symbol) facing up, toward the front of the AirTag. It should sit flat and snug in the metal holder. If it feels loose or tilted, remove it and reposition it.

Do not touch the battery contacts with your bare fingers for longer than necessary. Oils from your skin can interfere with the connection, though this is rare. If you do touch them, a quick wipe on a clean, dry cloth is enough.

Closing the AirTag

Once the battery is in place, align the metal back plate with the white plastic front. The plate has a small notch that lines up with a tab on the front — this helps you position it correctly. Press the back plate down gently and twist it clockwise (the opposite direction from when you opened it) until you feel it click and stop.

The click is important — it means the seal is tight and the battery contacts are making good connection. If you do not hear or feel a click, untwist slightly and try again. Do not force it past the click; that can damage the threads.

Reconnecting your AirTag to your iPhone

Your AirTag will reconnect automatically within a few seconds of closing the case. Open the Find My app on your iPhone and tap the Items tab. Your AirTag should appear in the list with a green dot, meaning it is connected and the battery is working.

If it does not appear within 30 seconds, try moving your iPhone closer to the AirTag. If it still does not show up, open the AirTag case again and check that the battery is seated properly and facing the right direction. Then close it and wait another 30 seconds.

Once your AirTag reconnects, the battery icon in the Find My app will update to show the new battery level. A fresh CR2032 battery lasts about one year with normal use.

Common mistakes to avoid

The most frequent error is installing the battery upside down. If your AirTag does not reconnect after you close it, open it again and flip the battery so the + symbol faces up. This fixes the problem almost every time.

Another mistake is not twisting the back plate far enough when closing it. If you hear a click but the plate still feels loose, untwist it a quarter turn and twist again. The click should be firm and the plate should not wiggle.

Do not use a coin or tool to force the back plate open or closed. The threads are plastic and can strip if you explore too much force. If the plate is stuck, try warming it slightly under warm (not hot) running water for a few seconds, then try again with a gentle, steady twist.

What to do if your AirTag still does not work

If your AirTag does not reconnect after you install a new battery and close the case, the problem is usually the battery orientation or seating. Open it again, remove the battery, and reinsert it with the + side facing up. Make sure it sits flat in the slot and is not tilted.

If the battery is seated correctly and the AirTag still does not work, try a different CR2032 battery. Occasionally a battery from the package is defective. If a second battery does not work either, the AirTag itself may have a hardware issue and may need to be replaced.

Frequently Asked Questions

Can I use a different type of battery instead of CR2032?

No. AirTag is designed for CR2032 only. Other coin cell sizes will not fit, and using the wrong battery can damage the AirTag or create a safety hazard. Always use CR2032.

How often do I need to replace the battery?

A CR2032 battery typically lasts about one year with normal use. The Find My app will notify you when the battery is low, usually a few weeks before it dies. You do not have to wait for the notification to replace it.

What if I lose the metal back plate?

Apple sells replacement back plates separately for a few dollars. You can order one from Apple's website or buy one from an authorized retailer. Without the back plate, the battery will fall out and the AirTag will not work.

Is it safe to open an AirTag myself?

Yes. Opening an AirTag to replace the battery is a normal maintenance task and does not void any coverage. There are no hazardous materials inside, and the process takes less than a minute.

Why is my AirTag not showing up in Find My after I replace the battery?

Check that the battery is facing the right direction (+ side up) and is seated firmly in the slot. Make sure the back plate is twisted all the way clockwise until it clicks. If both are correct, try moving closer to your iPhone or restarting the Find My app. If it still does not appear after five minutes, the battery may be defective — try a different one.