Well, here is one bit of data then. The Tesla model S 100D I bought in December 2017 now has over 17,000 miles on it, with 95% of those miles fast supercharged

Well, here is one bit of data then. The Tesla model S 100D I bought in December 2017 now has over 17,000 miles on it, with 95% of those miles fast supercharged. My max range has declined 2 miles. That's well under 1%, which is especially impressive given that most battery capability loss happens in the beginning of it's lifespan. How? Well, I suppose the battery management software and hardware is as advanced as is claimed.