AirTags use a standard CR2032 coin battery that you can swap yourself in about 30 seconds

Your AirTag will alert you when the battery is running low—you'll see a notification on your iPhone, iPad, or Mac saying the battery needs to be replaced. When that happens, you don't need to buy a new AirTag or take it anywhere. The battery compartment is designed to open by hand, and a replacement CR2032 battery costs between $3 and $8 at most drugstores, supermarkets, or online retailers.

The whole process takes less than a minute. You'll need only the AirTag itself and a fresh CR2032 battery—no tools required.

Key Takeaways

  • AirTags use a CR2032 coin battery that you can replace yourself without any special tools or skills.
  • Your device will send you a notification when the battery is low, giving you time to get a replacement before it dies.
  • The battery compartment twists open counterclockwise and the old battery pops out easily once the cover is off.
  • A fresh CR2032 battery costs just a few dollars and is sold at pharmacies, grocery stores, and online.
  • After you insert the new battery, the AirTag will reconnect to your device within a few seconds.

Step-by-step battery replacement

Hold the AirTag in one hand with the stainless steel side facing up. You'll see a circular battery cover on the back—it's the part that looks slightly raised from the rest of the plastic casing.

Press down gently on the battery cover with your thumb or finger and twist it counterclockwise (the same direction you'd unscrew a jar lid). You only need to turn it about a quarter turn—you'll feel it loosen. Once it's loose, lift the cover away from the AirTag.

The old CR2032 battery will be sitting inside the compartment. It may fall out on its own, or you can gently pop it out with your finger. Set the old battery aside.

Take your new CR2032 battery and place it into the compartment with the positive side (the flat side with the + symbol) facing up toward you. Press it down gently until it sits flat. Then replace the battery cover by pressing it down and twisting it clockwise until you hear or feel a small click. The cover should be snug but not forced.

What to expect after you install the new battery

Within a few seconds of installing the new battery, your AirTag will reconnect to your iPhone, iPad, or Mac. You'll see a notification confirming the connection is restored. The battery level in the Find My app will update to show a full battery.

If your AirTag doesn't reconnect right away, try moving it closer to your device or toggling Bluetooth off and back on. In rare cases, you may need to remove the AirTag from your account and add it again, but this is not usually necessary.

Where to buy CR2032 batteries

CR2032 batteries are one of the most common coin cell batteries made, so they're stocked almost everywhere. You can find them at drugstores like CVS and Walgreens, supermarkets like Target and Walmart, and online at Amazon. A single battery typically costs $3 to $8, though buying a pack of two or four is often cheaper per battery.

When you're shopping, make sure the package says CR2032 and not a different size like CR2025 or CR2016. The wrong size won't fit. Some packages are labeled "3V lithium coin battery" or "button battery"—those are fine as long as the model number is CR2032.

How long a new battery lasts

A fresh CR2032 battery in an AirTag typically lasts about one year under normal use. The exact lifespan depends on how often your AirTag is transmitting its location and how frequently you're checking it in the Find My app. An AirTag that's attached to something you carry every day will drain the battery faster than one sitting on a shelf at home.

Apple will send you another low-battery notification when the new battery is running down, so you'll have plenty of warning before it dies completely.

What to do with the old battery

Don't throw the old CR2032 battery in the trash. Coin cell batteries contain lithium and other materials that can be recycled. Many drugstores and supermarkets have battery recycling bins near the checkout or customer service desk—ask an employee where yours is located. You can also search for a recycling center near you on Earth911.com or Call2Recycle.org.

If you have no recycling option nearby, you can store the old battery safely in a cool, dry place until you find one. Keep it away from metal objects that could cause it to short circuit.

When to call Apple Support

Battery replacement is straightforward enough that you won't need help in most cases. However, if your AirTag still won't connect after you've installed a fresh battery and waited a few minutes, or if the battery compartment is cracked or won't close properly, contact Apple Support. They can walk you through troubleshooting or discuss a replacement if the AirTag itself is damaged.

If you're uncomfortable opening the battery compartment for any reason, Apple Support can also tell you about mail-in repair or replacement options, though these usually cost more than buying a new battery yourself.

Frequently Asked Questions

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

No. The AirTag is designed specifically for CR2032 batteries. Other coin cell batteries like CR2025 or CR2016 are physically different sizes and won't fit properly or work correctly. Always use a CR2032.

What if I can't get the battery cover to twist open?

The cover should turn with gentle pressure—you're not forcing a stuck bolt. If it won't budge, make sure you're twisting counterclockwise (the same way you'd open a jar). Try wrapping a thin cloth around the cover for better grip, or wash your hands to remove any moisture that might make it slippery. If it still won't open, the cover may be damaged and you should contact Apple Support.

Does the AirTag stop working while I'm replacing the battery?

Yes, briefly. Once you remove the old battery, the AirTag loses power and won't transmit its location. It reconnects within seconds of the new battery being installed. If you need continuous tracking, replace the battery as soon as you get the low-battery notification rather than waiting until it dies.

Can I replace the battery in an AirTag that's attached to my keys or bag?

Yes. You don't need to remove the AirTag from its holder or case. Just hold the AirTag steady and follow the same steps. If the case makes it hard to grip the battery cover, you can remove the AirTag temporarily, replace the battery, and put it back in the case.

Is there any risk of damaging the AirTag if I replace the battery myself?

The battery compartment is designed for user replacement and is very durable. As long as you're not forcing the cover or using tools, there's virtually no risk of damage. The main thing to avoid is touching the battery contacts with dirty fingers, but a quick wipe on your shirt is fine if needed.