Re: Tesla semi?
"KERS (Kinetic Energy Recovery System)."
Kerse you, Red Baron!
To reply to another post, of course stopping from speed will soon fill any sane supercapacitor and, if you don't divert the current, you will then get no more regenerative braking. So the system needs to be smart enough to understand that and adjust mechanical braking accordingly. But that is not my point.
Most braking time is spent easing back gently for corners or other traffic hazards. Not spectacular amounts of energy on any given occasion, but repeated many times during a typical journey. It is this persistent low level of expenditure that regenerative systems can most easily recapture.