“CR2032 batteries with bitterant coatings might not work with AirTag or other battery-powered products, depending on the alignment of the coating in relation to the battery contacts,” explains Apple.
Last year, Duracell introduced a 2032 coin cell battery with a bitter coating “designed to help prevent accidental ingestions,” particularly by young children.
AirTag batteries need to be replaced in approximately one year. So when you’re looking next time, skip the batteries with bitter coatings.
Check out the video below on how to change your AirTag battery:
As for the AirTag itself, Apple says “Warning: AirTag, the battery cover, and the battery might present a choking hazard or cause other injury to small children. Keep these items away from small children.”