Yeah you're right, it guess the battery health based on prolonged usage. I'm not sure what you are looking for exists in stock Android ROM. It's very possible that info is restricted to the system, so apps cannot access it.
Let us know if you find something, I would be very interested.
Le pain est tellement rendu cher à l'épicerie c'est ridicule, je serais vraiment curieux de savoir le coût réel de production. La marge de profit doit être belle.