[toast0]

> Whilst cranking, an ICE car will drop to around 6 volts (then maximum power is extracted according to thevenim's theorem).

> That means all computers etc will work at 6v.

Not necessarily all of them. Plenty of stuff will drop out while cranking; hopefully not the computers that run the fuel injection and ignition, though.

[cogogo]

Interesting. I now know why my windshield wipers quit for a sec when my vw auto stop/start kicks back on.

[Maxion]

Not a car engineer, but those motors can be pretty high A, so this could also just be a feature that helps the starter get as much power as it can while cranking.

[bluGill]

Ignition switches were turning off the wipers and other such extras in the 1980s. Probably longer but I'm not old enough to remember

[HeyLaughingBoy]

Some accessories are disconnected while cranking so the battery can supply as much current as possible to the starter.