Apple Removes AirTag Battery Level Indicator from the Find My App
macrumors.com
macrumors.com
Know anything about batteries? There are other ways of determining remaining battery capacity, but most popularly it is determined by testing voltage, which itself can be split into two methods: testing voltage under load and testing voltage not under load. Testing voltage under load takes energy. Testing voltage not under load will also take energy (if the tester is built in to the device, which it is) but not as much, though testing not under load is not nearly as reliably accurate as testing voltage under load.
So, in fact, not only possibly, but definitely, checking battery life is always detrimental to battery life because it takes power to check voltage under load to produce battery life data, and that power comes from the battery's remaining capacity.
I get where you're coming from, but Airtags have worked perfectly fine in the wild thus far. Obviously the battery testing isn't that detrimental, and since Apple hasn't made an official statement confirming that's the case, I think I have to chalk this up to apologism. Apple took away another feature, and the community can't help but find excuses. This is the whole "we need the notch for our 1080p webcam" hustle all over again...
It's ok, but obviously not. I was merely correcting your mistake, perhaps pedantically, and really that's all. I was not, in fact, giving you license to build a straw man factory.
It may not be permanent, or it may have been done for other purposes.