Elevation Lab AirTag 10-Year Extended Battery Case (2 Pack) | Uses AA batteries - 14x more capacity than CR2032 | Waterproof, CR 2032 battery replacement

If you do go the AT route, know there are battery packs that can provide plenty of power. It’s a shell with 2AA Batteries that house the AirTag and the main power to the AT is via 2 AA batteries that are said to last at least 1year. https://a.co/d/giSBGAp