Get the latest tech news
Elevation Lab's TimeCapsule is a waterproof 10-year battery case for your AirTag
An AirTag accessory called the TimeCapsule can extend its battery life and make it waterproof.
A company called Elevation Lab has released an accessory for the Apple AirTag that extends its battery life by up to 10 years and makes it waterproof. As you can see, it will make your tracking device a lot bigger and considerably heftier, so it's mostly ideal for use with large objects, such as vehicles and big suitcases. The Energizer Ultimate Lithium batteries Elevation Lab reommends are 1.5V each and have a capacity of over 3,000mAh, which is why they can power an AirTag for up to a decade.
Or read this on Endgadget