you could categorize this under charging and battery management.
it would be useful to know a number or a range of how much battery is left on the device from the app.
currently it shows a picture which is less than ideal. I would gladly accept a rough estimate (ex: 25, 50, 75, 100% for 4 levels of granularity).
It is kind of hard to tell if I need to top up the Yoto before a car trip or if it’ll be fine from a few pixels in the app.
Specifically I have the Yoto mini