Where did you get the 10 % degradation from? Long time studies show way less, even with older models

https://insideevs.com/news/801624/sweden-batter-degradation-group-test/

We just came back from a trip. Started with below 50 percent, first stop was a nice caffee for a second breakfast. Within 20 minutes, charge went up to 80, giving uns around 400 km range. The car was full before we even finished.

The planing simply changed. Instead of rushing through a gas stop, we prefer a route with places for a nice break. Or, in a pinch, nearly every McDonald’s now has a row of quick chargers.

It is becoming a non-issue.