Apple’s AirTag is designed to run quietly in the background, helping you keep track of everyday items like keys, bags and luggage. Unlike many small trackers, an AirTag doesn’t need to be charged. Instead, it uses a standard replaceable coin cell battery that typically lasts around a year, depending on usage.
When the battery runs low, your iPhone will alert you. Replacing it is a simple process that takes just a few minutes and doesn’t require any tools. This guide explains how to tell when your AirTag battery needs replacing, which battery to use and how to swap it safely.
How to replace the battery in your AirTag
Replacing the battery only takes a few steps.
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Hold the AirTag with the polished stainless steel side facing up. Press down firmly on the metal battery cover and rotate it counterclockwise. Continue turning until the cover stops moving. Lift off the cover and remove the old battery. Insert a new CR2032 battery with the positive (+) side facing up. Once the battery is seated correctly, the AirTag will emit a brief chime, confirming that power has been restored. Place the battery cover back onto the AirTag. Align the three small tabs on the cover with the matching slots on the AirTag body. Press down gently and rotate the cover clockwise until it stops. The cover should sit flush with the AirTag and feel secure once locked into place.
No pairing or setup steps are required after replacing the battery. Your AirTag will automatically reconnect to your Apple ID.
When to replace your AirTag battery
Your iPhone will automatically notify you when an AirTag battery is running low. The alert appears as a notification and doesn’t interrupt tracking, but it’s a good idea to replace the battery quickly to avoid losing location updates.
If you’re unsure whether your AirTag battery needs replacing, open the Find My app, tap the Items tab and select your AirTag. If a message appears under the AirTag name stating “Low Battery”, you’ll know it needs replacing. If no message appears, it’s safe to assume the battery level is fine for now. AirTags don’t have a screen or any other battery indicator, but Apple does show a battery percentage for AirTags in the FindMy app. The low battery warning is the only signal Apple provides before replacement becomes necessary.
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