How to Replace Your AirTag Battery

Understanding Your AirTag Battery and Its Lifespan

Apple's AirTag contains a standard CR2032 coin-cell battery, the same type found in many household devices like watches, calculators, and small electronics. This battery measures about 20 millimeters in diameter and 3.2 millimeters thick, making it compact enough to fit inside the AirTag's small circular housing. The CR2032 battery provides power to the AirTag's Bluetooth transmitter, which broadcasts your device's location to the Find My network.

Apple reports that a single CR2032 battery typically lasts approximately one year under normal usage conditions. The actual lifespan depends on several factors, including how frequently you trigger lost mode, how often your AirTag searches for nearby devices, and whether you live in an area with dense Apple device coverage. Users who trigger lost mode frequently or live in areas with fewer Apple devices may find their batteries lasting somewhat longer than a year.

When your AirTag's battery runs low, you'll receive a notification on your iPhone, iPad, or Mac devices that are signed into your Apple ID. This notification provides a helpful heads-up before the battery completely depletes, typically appearing when the battery level reaches a certain threshold. Unlike rechargeable batteries in some devices, the CR2032 is disposable and not designed to be recharged.

The battery itself costs very little—typically between $3 and $8 for a pack of batteries at retailers like drugstores, supermarkets, and online stores. Many households already have CR2032 batteries on hand for other devices, so you may not need to purchase one separately. This low cost makes AirTag maintenance quite affordable compared to replacing entire devices or paying for professional battery replacement services.

Takeaway: Knowing that your AirTag battery lasts roughly one year and costs just a few dollars helps you plan for routine maintenance. Mark your calendar approximately one year after purchasing your AirTag, and check your local stores for CR2032 batteries so you're prepared when the replacement notification arrives.

What You'll Need Before Starting the Replacement

Replacing an AirTag battery requires very few supplies, and you likely already own most of what you'll need. The primary item is a replacement CR2032 battery, which you can purchase at pharmacies like CVS or Walgreens, supermarkets like Target or Walmart, electronics retailers like Best Buy, or online through Amazon. When shopping, look for packages labeled "CR2032" or "CR2032 3V" to ensure you're getting the correct battery type. Some retailers sell batteries individually, while others offer multi-packs at better value if you have multiple devices needing batteries.

Beyond the battery itself, you'll need something to open the AirTag's metal backing. Apple doesn't provide a specific tool for this task, but several options work well. A coin—preferably a dime or penny—works effectively for most people and requires no additional purchase. Alternatively, you can use a flat-head screwdriver, a butter knife, or even a flat piece of plastic. Some users prefer using a small flathead screwdriver or a guitar pick for better control, though these are optional. The goal is simply to create enough leverage to pry open the circular metal back piece without damaging it.

You should work in a clean, well-lit area with a flat surface. A kitchen table or desk works well. Good lighting helps you see the battery compartment clearly and prevents accidentally dropping the small battery. Having a small dish or cloth nearby can catch the battery or metal backing pieces, preventing them from rolling away or getting lost.

Before beginning, ensure your hands are relatively clean and dry. Moisture or debris can potentially interfere with battery function. If your hands are damp, dry them thoroughly with a towel first. This basic preparation ensures a smooth replacement process.

Takeaway: Gather a CR2032 battery and a coin from your pocket before starting. That's truly all you need. You likely already have both items, making AirTag battery replacement one of the most accessible device maintenance tasks you can perform.

Step-by-Step Instructions for Opening Your AirTag

Opening your AirTag requires gentle, careful handling to avoid damage to either the device or your hands. Start by holding the AirTag with the metal backing facing you. The white plastic portion should be facing away from you. You'll notice the metal backing has a slight ridge or lip that creates a small gap between the metal and the plastic body—this gap is your entry point.

Using your coin (or flat tool), position it so the edge fits into this gap between the metal backing and white plastic. You don't need to force anything at this stage. Simply rest the coin's edge in the gap, then apply gentle, steady pressure by rotating your wrist slightly, as if you're opening a paint can with a paint stick. The metal backing will begin to lift. Avoid using sudden, jerking motions, which could cause the coin to slip or the backing to bend.

Continue this gentle rotation around the edge of the backing until it lifts completely off. You may need to work your way around the circular edge several times, rotating slightly and then moving to another section, rather than trying to pry the entire backing off in one motion. Think of it as loosening something gradually rather than forcing it open immediately.

Once you've lifted the backing partway, you can usually remove it by hand. Set the metal backing aside on your work surface where it won't roll away. Inside, you'll see the white plastic body of the AirTag with a small circular compartment. The old battery will be visible in this compartment, typically sitting flat or with one edge slightly raised.

Takeaway: The key to opening your AirTag without damage is patience and gentle pressure. Work slowly around the edge, use a tool that fits the gap, and avoid sudden force. Most people successfully open their AirTag on their first attempt when they approach it methodically rather than rushing.

Removing and Installing the New Battery

With the metal backing removed, you can now see the battery compartment clearly. The old CR2032 battery sits in a shallow circular depression designed to hold it securely. If the battery edge is raised slightly, you can gently lift it with your fingernail or the edge of your coin. If it's sitting flat, simply slide it out of the compartment. Set the used battery aside—you may want to dispose of it according to your local battery recycling guidelines, as many retailers accept used batteries for proper disposal.

Before installing the new battery, take a moment to examine it. The CR2032 has two sides: the positive side (marked with a +) typically has a slightly raised or domed surface and looks shinier or smoother, while the negative side is typically flat or has a recessed design. This distinction matters for proper function. Most CR2032 batteries are stamped with the battery type, voltage (3V), and the year, usually on the positive side.

Place the new battery into the compartment with the positive side facing up (toward the white plastic interior of the AirTag, away from the metal backing). This orientation is important for the battery to function correctly. The battery should sit flat in the compartment without forcing. If it doesn't sit easily, you may have the orientation backward—gently remove it and flip it over.

Once the battery is correctly positioned, you're ready to close the AirTag. Take the metal backing and press it back onto the white plastic body. You'll feel slight resistance as it seats into place. Apply gentle, even pressure around the circular edge until the backing sits flush with the plastic body. You shouldn't need to force it—if it requires excessive pressure, check that the battery is positioned correctly. The metal backing should sit evenly with no gaps or raised edges.

Takeaway: Positive side up, press it in place, and close the backing. That's the installation process. The main thing to remember is battery orientation, which is why taking a moment to identify which side is positive before installing prevents errors.

Confirming Your Replacement Was Successful

After closing the AirTag, you should verify that the battery replacement was successful. The most immediate check is to open the Find My app on any of your Apple devices (iPhone, iPad, or Mac) where you're signed into your Apple ID. Navigate to the Items tab and select the AirTag you just serviced. If the replacement was successful, the battery percentage should show as 100 percent. If the battery status still shows as low or depleted, the