To resurrect this thread, information for those changing batteries in their Air Tags. I have two Air Tags and both are reporting low battery so whilst I have some time I thought I'd change them. Having gone through 3 Duracell CR2032 batteries with no joy I started to do some research. Some button type batteries have a bitterant coating to deter babies/toddlers from swallowing them; batteries with this coating won't work e.g. Duracell. Panasonic batteries are what mine came with and I've now ordered some. Who knew?