Hard braking is an insane power. Eg. A typical 4,400 lb car emergency stopping from 80 mph has a braking power of 940 horsepower.

Hybrid cars have smaller motors, inverters, and battery packs - and none of those components can absorb 940 horsepower!

A 2nd gen prius battery for example has a max in/out of 30 horsepower.

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potato3732842 2 days ago | parent [-]

Always sketches me out using regen for a serious grade decent while laden or towing. I have a sneaking suspicion that one day it's gonna error out and disable itself because too much power and I'll be down to just normal brakes.

	▲	londons_explore 2 days ago \| parent [-]
		It will disable itself if your battery is already full... Some cars it's quite an abrupt change from the regen braking to the hydraulic brakes.