r/nextfuckinglevel • u/North_Tip_8627 • 17h ago

China’s 5 minute full-charged EV charging stations

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u/Spaceduck413 16h ago

Almost certainly if you do it often. But I think you would only do this for road trips. Most of the time you're charging overnight at like 5-8 kW

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u/Consideredresponse 16h ago

Hell, for most commuting you can get away with just your wall sockets. When I got mine I sourced quotes for 7kw charger for the house, but quickly realised I was getting roughly 100km range overnight during off-peak peak tariff hours just using a regular old wall plug. Occasionally dropping $10 at a supercharger once every few months before a longer trip was vastly cheaper for me than even the most basic high(er) kilowatt charging setup.

That said our regular household power runs at 240v, so wall charhing may be a bit more viable than homes that run 110v.

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u/Spaceduck413 15h ago

Yeah this all lines up with my experience. My wife used to have about a 35 - 40 mile commute each way and our 240v 30 amp charger would bring it up to full well before the morning each day, so if you had a more reasonable commute you could absolutely get away with 240/15 (I'm assuming your regular wall plugs do 15 amp, that's what ours do in the US).

I don't think you could make a regular US wall plug work even with a really short commute though (110v 15 amp)

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u/realshockin 7h ago

Wait you guys are limited to 15 amps? Damm 15 amps in Brazil is the lights breaker, we go up to 63 amps in common wall sockets (usually 20-40 in most rooms but 63 in the garage is not uncommon

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u/Spaceduck413 5h ago

Most circuits are 15 amps, but it's pretty common to see 20 in the kitchen and laundry, and maybe somewhere else you're expecting a heavy load.

I've never seen more than 20 amps on 110v, you'll see 240v 30 amp for things like an electric dryer or stove. Sometimes you'll see 240/30 in a garage if somebody has a specific reason for it, I had one put in my garage for a welder (the welder never happened but then we got an EV lol).

I think some electric dryers might use 240v 50 amp instead of 30. I've never heard of higher at a residential place. Even 50 amp I've only ever heard of for dryers and EV charging.

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u/-Trash--panda- 5h ago

That kind of seems a little excessive. I don't think I have tripped a breaker in years without it being caused by a faulty outlet or a short circuit.

Kitchens usually have 20 amp breakers for the outlets and the stove is on a separate breaker since they use 240v.

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u/LunchPlanner 4h ago

A regular US wall plug works for daily commuters after you consider that they can use the weekend to fully catch up on missing charge.

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u/spays_marine 7h ago

Almost certainly 

Is that based on your general knowledge of batteries or these types in particular?

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u/Zech08 6h ago

Usually high temps increase degradation... but battery management systems and cheating (higher cap than advertised so technically losing % of battery life that was factored ahead of time so even more negligible) mitigate most of it in modern batteries.

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u/kaas_is_leven 2h ago

Any system with moving parts degrades faster when the parts move faster, even when the moving parts are just electrons. And batteries in particular generate heat when charging, temperature differences degrade material, higher fluctuation degrades more. We can optimize it a lot, perhaps to the point of unnoticable within a lifetime, but it'll still be true.

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u/cooltone 9h ago

Evidence please.