I have a "Service Battery" notification since 3 years, still gives me 4 hours.
Can charge while working the machine still? Teams/Docker/etc chugging and charge % steadily dropped irregardless of port/charger used.
I got that warning on my Macbook Pro from 2014 after ~820 cycles.
So, somewhat close at least?
I think I got a pretty high number out of my first MacBook Pro before the battery swelled up like a bad bruise. But my current work laptop is now at 87% capacity with 82 cycles, so I don't have a lot of confidence in the battery lasting to 1000.