During a routine check a few months ago a Tesla mechanic checked the battery and told me that mine was, after two years (and yes, a measly approx. 12k km
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
, in an even better shape than the "average" battery in a new Roadster as far as capacity is concerned. Works for me.