These replacement Panasonic CR2032 Apple AirTag batteries are high quality lithium coin cells. The Panasonic CR2032 don't have the bitter coating that you find on some batteries. This pack contains 6 batteries. Please see below for instructions on how to replace your Apple AirTag battery : Press down on the polished stainless steel battery cover of your AirTag and rotate anticlockwise until the cover stops rotating. Remove the cover and battery. Insert a new CR2032 lithium 3V coin battery (available at most electronic stores and pharmacies) with the positive side facing up. You’ll hear a sound indicating that the battery has been connected.  Replace the cover, making sure that the three tabs on the cover align with the three slots on the AirTag. Rotate the cover clockwise until it stops. Lastly please keep batteries away from children.