Also: 5 ways AirTags can simplify your life (beyond tracking keys) It told me a lot of times. There are also warnings in the Find My app. After all, it would be a few weeks before the battery died, wouldn’t it? Wrong. The battery died five days later. Also: Why these USB lithium-ion battery chargers are must-haves for my tool bag Luckily by then, I’d got hold of a replacement, but it still felt like a close one. I’ve grown reliant on AirTags to bring order into the chaos I create. And even luckier for me, I knew where my keys were when it happened. Apple says that AirTags have a battery lifespan of “more than a year” for everyday use, which is defined as “four play sound events and one Precision Finding event per day,” so depending on your usage, you might get a lot more than a year, or a lot less than a year out of the battery in your AirTag. I got a lot less than a year. I know, because I’d replaced the battery nine months ago. However, be aware that if the replacement button cell has a bitter coating to prevent children from putting it in their mouths (button cells might seem innocuous, but they can cause serious injury or even death), you might have to remove some of that bitterant for the battery to work (I go through that process in detail here). Also: The best GPS trackers for kids with real-time location tracking And remember to dispose of the dead button cells responsibly! They still present a danger to children when exhausted. If you rely on Apple AirTags, I strongly suggest keeping a few CR2032 button cells handy, replace the batteries yearly or as soon as you get a notification that the battery is running out.
