dyyd t1_j8nlsov wrote on February 15, 2023 at 5:08 PM

Reply to comment by ben7337 in EU approves 2035 ban on new fossil fuel car sales by chrisdh79

Thats why newer EV-s have liquid cooled/heated battery packs which maintain a safe temperature for the pack even when not driving.

ben7337 t1_j8nnwqz wrote on February 15, 2023 at 5:22 PM

Wait you're telling me there's ev batteries that you can leave out for 24 hours or more at below freezing temps and it keeps the battery above freezing so it's not degraded? Any source on that because I've never heard of such a thing and I'd have to ask where the energy to heat the battery comes from, is it just actively discharging to maintain a set temp, and it'd be dead if you left it out in the cold for a week or something?

dyyd t1_j8nokv6 wrote on February 15, 2023 at 5:26 PM

Personal experience from a Leaf at -30C the winter before last :D That had accumulated enough heat in it from the previous days ride that it never got to 0C.

That specific car did not have liquid cooling but it did have electric heating yeah.

Sources are many, google it.

But yeah, if you leave the car unplugged for an extended period in winter (like weeks) then it will drain from maintaining the safe temperature and then there might be damage. Which is why for taking care of your car you leave it plugged in for such situations.