Cars - For Car Enthusiasts

3882 readers

2 users here now

About Community

c/Cars is the largest automotive enthusiast community on Lemmy and the fediverse. We're your central hub for vehicle-related discussion, industry news, reviews, projects, DIY guides, advice, stories, and more.

Rules

Stay respectful to the community, hold civil discussions, even when others hold opinions that may differ from yours.

This is not an NSFW community, and any such content will not be tolerated.

Policy, not politics! Policy discussions revolve around the concept; political discussions revolve around the individual, party, association, etc. We only allow POLICY discussions and political discussions should go to c/politics.

Must be related to cars, anything that does not have connection to cars will be considered spam/irrelevant and is subject to removal.

founded 1 year ago

MODERATORS

BallShapedMan@lemmy.world

RightHandOfIkaros@lemmy.world

Why do even hybrid cars have 2 batteries?(12v + high-voltage) (lemmy.world)

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

7 comments fedilink hide all child comments

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..

you are viewing a single comment's thread
view the rest of the comments

[–] deliux@discuss.tchncs.de 24 points 1 year ago (1 children)

The main reason why you will alway have a low voltage battery is safety: It is used to actuate the contactors for the HV Battery. You would not want un-switchable HV components. For example in the event of a crash the HV battery gets completely disconnected but airbags and indicators will still work. The 12v battery will get charged off the main hv battery if it gets low btw.

[–] WagnasT@iusearchlinux.fyi 12 points 1 year ago (1 children)

to piggyback off this, 12V components are also everywhere else, so you can use off the shelf components like lights, wiper motors, etc without having a limited production run for high voltage components, which keeps costs down. Doing it this way made it possible to add hybrid systems to traditional vehicles like a camery or an escape. This also enables you to jumpstart a hybrid with another 12V system.

TLDR: money, compatibility, safety

[–] pHr34kY@lemmy.world 5 points 1 year ago (1 children)

I think James May explained it best when the whole thing failed on his car and he couldn't even get into it.

[–] PipedLinkBot@feddit.rocks 4 points 1 year ago

Here is an alternative Piped link(s): https://piped.video/NsKwMryKqRE?si=1OkgZzgt46iKYxv5

Piped is a privacy-respecting open-source alternative frontend to YouTube.

I'm open-source, check me out at GitHub.