Ya. I've been looking at tags for Android. There are some better ones out there. But I have not researched their limitations. In terms of this kind of use. I assume air tags and the like require a new charge after a given amount of time. Maybe I'll do some deep dives using AI?
The battery life is about a year. Because my FIL lives 3 1/2 hours away, we just purchased a second one, when the first one died. Cost was less than $30. When my wife retrieved the dead one, it had a dead battery.