Apple AirTag 2 uses a CR2032 coin cell battery, the same replaceable standard as its predecessor. The process is user-serviceable, no tools required.
The video from 9to5Mac walks through the exact steps to open the AirTag 2, swap the battery, and reseal the device. The mechanism and technique are what make this worth watching in full, not just the endpoint.
CR2032 cells are widely available and cheap. Knowing this procedure extends the useful life of a 30-dollar tracking device indefinitely, which matters more than any spec upgrade.
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