Replacing AirTag battery
I replaced the battery (used two brand-new) but it still is in the red.
[Re-Titled by Moderator]
AirTag
Question marked as
"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." - How to replace the battery in your AirTag - Apple Support
*So apparently not Duracell or Energizer. airtag batteries and bitterant - Apple Community
but you may be able to remove the bitter coating Does rubbing alcohol work to remove the b… - Apple Community