Check your battery type. Most fobs use small coin batteries (like CR2032), so confirm before you buy. Pry it open with care. Find the seam, pop it gently—no need to wrestle with it. Replace and click ...

To replace an AirTag battery, press and rotate the stainless steel cover counterclockwise, remove it, and take out the old CR2032 battery. Insert a new one with the positive side up—your AirTag will ...