Apple AirTag batteries last about one year under normal use

An Apple AirTag uses a standard CR2032 coin-cell battery that typically lasts around one year before it needs replacing. The actual lifespan depends on how often the AirTag communicates with your iPhone or other Apple devices — the more it sends location updates, the faster the battery drains. If you use your AirTag to track something you check on constantly, the battery may wear out faster than a year. If it sits in a drawer tracking something you rarely look for, it could last longer.

Apple doesn't publish exact battery life figures in hours or days, only the one-year estimate. The company designs AirTags to notify you when the battery is low, so you won't suddenly find yourself with a dead tracker. When the battery reaches about 10 percent capacity, your iPhone will send you a notification telling you it's time to replace it.

Key Takeaways

  • Apple AirTag batteries last approximately one year under typical use, though this varies based on how often you check the tracker's location.
  • The battery is a CR2032 coin cell, a common type you can buy at drugstores, supermarkets, or online for a few dollars.
  • Your iPhone will notify you when the battery drops to about 10 percent, giving you time to replace it before the AirTag stops working.
  • Replacing the battery takes less than a minute — you twist the stainless steel back off the AirTag and swap in a new CR2032.

What affects how fast the battery drains

The main factor is how often your AirTag communicates with nearby Apple devices. Every time it broadcasts its location or receives a signal, it uses battery power. If you're constantly opening the Find My app to check on your keys or wallet, the AirTag is working harder and the battery depletes faster. If the AirTag sits in a bag you rarely track, it uses much less power.

Temperature also plays a role. Coin-cell batteries perform worse in cold conditions, so an AirTag left in a freezing car or outdoor location may drain faster than one kept at room temperature. The battery itself also matters — a fresh CR2032 from a reputable manufacturer will last longer than an older or off-brand battery.

How to know when the battery is running low

Your iPhone automatically monitors the AirTag's battery level through the Find My app. When the battery drops to roughly 10 percent, you'll receive a notification on your phone saying the AirTag battery is low. You don't have to open the app or check manually — the notification comes to you.

You can also check the battery level manually by opening the Find My app, tapping the Items tab, selecting your AirTag, and looking at the battery percentage shown on its details screen. This is useful if you want to know how much battery remains before you get a low-battery alert, or if you're wondering whether an AirTag you haven't used in a while still has power.

Replacing the battery yourself

Replacing an AirTag battery is straightforward and takes about one minute. Hold the AirTag with the white plastic side facing up. Place your thumb on the stainless steel back and push down while twisting counterclockwise. The back will pop off, revealing the CR2032 battery inside.

Remove the old battery and insert a new CR2032 with the positive side (marked with a +) facing up. Push the stainless steel back onto the AirTag and twist clockwise until it clicks into place. Your iPhone will recognize the fresh battery within a few seconds, and the low-battery notification will clear.

You can buy CR2032 batteries at most drugstores, supermarkets, electronics retailers, and online. They typically cost between one and three dollars each. Make sure you're buying a CR2032 specifically — other coin-cell sizes won't fit or work in an AirTag.

What to do if your AirTag battery dies completely

If the battery dies before you replace it, the AirTag stops broadcasting its location and won't show up in the Find My app. However, the AirTag itself isn't damaged — it will work perfectly once you install a fresh battery. There's no permanent harm to leaving an AirTag without a battery for days or weeks.

If you've lost an AirTag and the battery has died, you won't be able to locate it using Find My until you replace the battery. This is one reason Apple sends you a low-battery notification — it gives you time to replace the battery before the AirTag becomes useless for tracking.

Comparing AirTag battery life to other trackers

Most Bluetooth trackers on the market use either coin-cell batteries like the AirTag or rechargeable batteries. Coin-cell trackers like AirTags typically last six months to a year before needing a battery swap. Rechargeable trackers often need charging every few weeks or months, depending on the model and how heavily you use them.

The advantage of a coin-cell battery is that you don't need to plug anything in or manage charging schedules — you just swap in a new battery when the old one dies. The trade-off is that you have to buy and replace batteries regularly. Rechargeable trackers eliminate that cost over time but require you to remember to charge them.

Tips to extend your AirTag battery life

You can't dramatically extend the battery life, but a few habits help. Avoid checking the Find My app excessively if you're trying to preserve battery — each location check uses power. Keep your AirTag at room temperature when possible, since cold drains batteries faster. If you're storing an AirTag you don't plan to use for months, you could remove the battery to prevent it from slowly draining, then reinstall it when you need the tracker again.

Using an AirTag in a case or holder doesn't affect battery life — the plastic or leather covering doesn't interfere with the wireless signal or power consumption. The battery will drain at the same rate whether the AirTag is naked or protected.

Frequently Asked Questions

Can I use a different type of battery in my AirTag?

No. AirTags are designed specifically for CR2032 coin-cell batteries. Other battery types won't fit the compartment or provide the correct voltage. Always use a CR2032 replacement.

Does the AirTag battery drain faster if I use it with an iPhone versus an iPad?

No. The AirTag communicates the same way regardless of which Apple device you're using to track it. Battery drain depends on how often you check the location and how many nearby Apple devices are in range, not on the type of device you own.

What happens if I leave an AirTag without a battery for a long time?

Nothing harmful. The AirTag is just a piece of plastic and metal without power — it won't degrade or break. When you install a new battery, it will work exactly as it did before. You can store AirTags without batteries indefinitely.

Is the CR2032 battery recyclable?

Yes. CR2032 batteries contain lithium and other materials that can be recycled. Many drugstores and electronics retailers have battery recycling programs. Check with your local waste management facility or retailer for drop-off locations in your area.

Will my AirTag still work if the battery is at 1 percent?

Yes, but not for long. An AirTag will continue to broadcast its location even at very low battery levels. However, once the battery is completely depleted, the AirTag stops working when ready. Replace the battery as soon as you get the low-battery notification to avoid losing tracking capability.