Well, this is something that I actually used. I have a robo vacuum. I was preparing my home for some guests once, when I saw that the vacuum wasn't charged fully (because it was mispositioned on its base). I put it to the right spot, let it charge for half an hour, started it and left to buy groceries.
At the store, I checked the app where I have my apartment mapped by the vacuum that shows its route and cleaning progress. And I saw that with the current charge, it will have to go back, charge and continue. So I set it from "max" power to "normal", to let it at least finish the job.
It is a cool and useful thing
Ah, ok, then yes. If it's just an indicator on the vacuum against "indicator in an app + register + give us all your data+ "buy vacuum 2.0" notifications", then fuck them
Yes? Maybe the battery was left uncharged, or used up, so you’re waiting to do more cleaning. Why shouldn’t you be able to check?
I have an automation in my Home Assistant setup to notify me when batteries need to be replaced or charged. Currently it’s only for the smart devices in that deployment, but yes. I want my home automation to keep track of all batteries, so I can see status at a glance and be reminded if one needs attention