The main concern with lithium batteries is fire. A fire in the cabin can be detected and contained much faster than in the cargo hold. Fire is probably not a r

The main concern with lithium batteries is fire. A fire in the cabin can be detected and contained much faster than in the cargo hold. Fire is probably not a realistic concern with an AirTag, Tile, or similar low-powered device using a tiny battery, but the regulations are not nuanced. Devices powered by lithium batteries are supposed to be turned off if they're in the cargo hold.