Comment on The "standard" car charger is usually overkill—but your electrician might not know that [32:26]

• waitmarks@lemmy.world ⁨3⁩ ⁨days⁩ ago

  Any AC load you can throw at an EV is effectively “slow charging”. My car supports a maximum of 9.6kw from an AC charger, but up to 150kw from DC fast chargers. Even with the fast charging, its not like a phone, it has active thermal management which will cool the battery and slow down the charging if it gets too hot. phones don’t really have that and is mainly why they degrade faster if quick charged.

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  • RaptorBenn@lemmy.world ⁨3⁩ ⁨days⁩ ago

    Can you source that?

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    • waitmarks@lemmy.world ⁨2⁩ ⁨days⁩ ago

      Here is a paper on the relationship between heat and battery degradation

      pubs.acs.org/doi/10.1021/acsomega.2c04093

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  • lemming741@lemmy.world ⁨3⁩ ⁨days⁩ ago

    It’s a neat conversion for EV charging. 7kw x 2.5 miles per kwh is 17.5 mph. Most EV onboard chargers top out at 11kw, 27.5 miles per hour. So from the battery’s perspective, 22kw is it’s normal discharge rate at 60mph.

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• DrunkenPirate@feddit.org ⁨2⁩ ⁨days⁩ ago

  I‘m not sure if fast charging degrades batteries. Just read somewhere an article stating that fast charging initially - first charge - boosts the overall capacity of the batterie due to chemical reactions that do not occur that long at anodes.

  The issue with fast charging was the thermal management - it’s getting to hot. This is managed by good battery management and a different packaging of cells nowadays. I think fast charging isn’t an issue anymore. Can’t provide you a link or such, it’s what I gathered through serveral podcasts.

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  • RaptorBenn@lemmy.world ⁨2⁩ ⁨days⁩ ago

    If you could find any evidence to support all that, i might consider it, until then, ill roll with what i know.

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    • DrunkenPirate@feddit.org ⁨2⁩ ⁨days⁩ ago

      Can you source your statement that fast charging reduces lifetime?

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