Should energizer battery work in AirTag?
AirTag (bought in November) not showing up under devices anymore. Did not get a low battery notification. New energizer battery not giving off a”chirp”. Does it sound like the AirTag is shot?
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AFAIK, only some Duracell batteries (with bitterant coatings) do not work with the Apple AirTags. Unless the Energizer battery you are using have the similar coating, is should be fine.
Ref: How to replace the battery in your AirTag - Apple Support