In battery terminology the Supercharger never hits the cells with more than 3C and only for short very controlled periods.
Exactly. You just stated a fact of the Tesla supercharger propaganda Film-Flam.
If you haven’t preconditioned your batteries, if you’re below 20%, if you’re above 80%, if you’re in a hot environment, and on and on… the DC fast charger will either charge only briefly at the 3C rate, or not at 3C at all.
Your Tesla will throttle back the charge rate to minimize the cell degradation that would otherwise occur if you actually were 3C charging.
Looks impressive though, doesn’t it, seeing the cars hooked up to supercharger stations?
Uniformed people don’t know their charge rate is actually throttled.
As far as your question to me about statistics of actual charging at 3C rate battery degradation …., as you would say… look it up. Easy to find on the internet. There’s a famous study without throttling that showed 27% degradation vs 23% for level 2.
That’s a 17% faster loss of capacity. I’d be worried about that on a $15k battery