You can replace the battery in your AirTag. Here's how.
How to Change an AirTag's Battery - MacRumors
Here's Why Your AirTag Battery Replacement Is Not Working - TidBITS
How to replace the battery in your AirTag - Apple Support
How to check and replace AirTag battery - iGeeksBlog
How to set up and use your AirTag
Apple AirTags: Everything You Need to Know
Apple AirTag Not Working? 10 Tips to Fix AirTag Issues
Apple introduces AirTag - Apple
How to replace your AirTag battery
How to find the serial number of an AirTag - Apple Support
How to Replace Apple AirTag Battery
Expert advice from Apple Support - Apple Support
Turn on the Find My network - Apple Support
Official Apple Support