400kW regen is going to be a fairly alarming level of stopping for a normal vehicle. It's OK to leave emergencies to the friction brakes.

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pbmonster 5 hours ago | parent [-]

The idea is deleting the friction brakes entirely, saving costs, maintenance and weight.

And 400kW isn't really all that much for a sports car. I remember 911 ads from the '80s that boasted "brakes with more than 1000 horse power".

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SoftTalker 4 hours ago | parent [-]

So how do you stop then if the batteries are (close to) fully charged? You'd need to shunt that power into a big resistive load, and then dump that heat.

	▲	testing22321 9 minutes ago \| parent [-]
		I’ve long foundered why we don’t ditch the friction brakes. Just have the battery stop charging and report 100% full when it’s only 98% (or whatever) so there is enough capacity for some solid emergency stops in the first few minutes of driving. Even if you have to resort to the resistor, who cares? It’s not like this is a common scenario