On Wednesday, 19 April 2023 at 15:45:49 UTC-7, Ed Lee wrote: ..
What do you mean by 'fully'?
The Teslas are designed to regenerate 'fully' when your foot is off the throttle independent of whether you are braking.
The PWM motor controller works as a booster during regeneration when the back-emf is less than the battery voltage. It can regenerate down to a few mph when the amount of kinetic energy available is minimal (kinetic energy is proportional to the square of speed). There is not much to lose when the friction brakes are applied at low speed.
I normally use single pedal driving where I don't use the brake anyway, the car automatically applies the friction brakes when the car has almost slowed to a stop.
kw