https://wccftech.com/airtags-removable-battery-safety-concers/

The biggest convenience of owning AirTags is that you will not be required to purchase additional trackers as they feature a removable battery. Just pop them out, replace them, and you are good to go for another year. Unfortunately, it is this exact convenience that forced Australian retailer to stop selling them in the first place over child safety concerns.

The AirTags have a removable CR2032 coin-shaped battery that can be replaced using a fairly simple process. Unfortunately, Australian retailer Officeworks was forced to temporarily pull these trackers from its shelves, stating that children could easily gain access to these batteries, putting themselves at risk. While the retailer did not provide an exact reason why the trackers are no longer sold, a Reddit thread provides insight as to what exactly transpired.