Air tag battery
Stopped working. Do I have to replace the battery and what type of battery is it??
iPhone 13 Pro Max, iOS 16
Question marked as
The AirTag uses a CR2032 type battery. A tag's battery has a typical useful life of about one year. Be sure that the replacement battery does NOT have a bitterant coating as these are known to be problematic with the tags.
Ref: How to replace the battery in your AirTag - Apple Support