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submitted 1 year ago by Monero@lemmy.world to c/cars@lemmy.world

It feels kind if dumb to see such configuration and I have worries If I drain small 12v battery by using car with engine off It wouldn't start..

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[-] Killer@lemmy.world 4 points 1 year ago
[-] FlyingSquid@lemmy.world 6 points 1 year ago

Huh.

The 12v battery in a hybrid doesn’t start the car like you’d expect – it provides power to the computer, relays, ECU, etc. The heavy lifting of starting the engine is actually done by the hybrid battery.

I knew about the rest of the things it does because I can run my stereo and my headlights on my Prius without the battery indicator dropping. But I totally thought it also started the car.

[-] deliux@discuss.tchncs.de 3 points 1 year ago* (last edited 1 year ago)

Well in a technical sense you are also right, since the contactor for the main battery gets power from the 12v (albeit it's not a big load) Meaning if the 12v is completely dead the hv battery will not switch on and the motor will not start.

this post was submitted on 10 Sep 2023
14 points (85.0% liked)

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