> AirTag is designed for over a year’s worth of battery life with everyday use. The CR2032 battery is user-replaceable and widely available. Replacement batteries are sold separately. That's the piece of information I wanted to know first. Devices like this can be built, but those can't run on batteries for a reasonable time frame. Apple made it practical.
As pointed out above, this is already the status quo (replacable battery, 1 year life, etc). Tile has had it for years. I'm curious if it would've been technically feasible to have wireless charging on these instead of replaceable battery. Or would that greatly increase the price?
Not only price, but size/weight too. It seems that currently the thing is 99% battery/case/PCB and is designed around the battery. While technically wireless charging is off-the-shelf, incorporating that may have been seen as "too expensive" and/or "too large".