I’m a little over 2.5 yrs on a Sony Xperia 5 III, I use the 80% limit feature but not as good about keeping above 20%; and avoid fast chargers for overnight charges.

I don’t have hard accubattery numbers but still works fine, I end most days pretty low for last year probably but never with range anxiety. No need/desire to increase my limit to 90% or 100% for extra use time yet