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Posted on 11/13/2025 8:29:11 AM PST by Signalman
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See my post #28 with real world charging numbers. I got the 10-15 minute charging stops every 200 miles on my last long trip I made in the EV (1,700 miles, all but 2 charging stops were 10-15 minutes while I used the restroom anyway, and one of the charging stops took longer because I wanted to be out of the car for a while and walk around and get a bite to eat, so I charged it to 100%, which takes longer because it charges way slower beyond 85%).
But, and this is important, you must do your homework before getting an EV. The 1,700 mile trip I sometimes take has plenty of fast chargers. Your trips may not have many fast charges. If we were to go on a trip without fast chargers we would have taken our gas pickup. And don't try to make a trip like that up north during the winter. We did our homework. For my wife and me the trips are conducive for EV's (in the south, never up north during the winter, all trips we usually take have plenty of fast charging options). So far in the 3 years we've owned the EV, we've never had to take the gas pickup. But we did our homework before getting the EV. If most of the trips you take aren't like that (and the EV would be the newer car and thus the one you'd want to take on trips), don't get an EV.
And don't get an EV unless you can set up charging at home and do lots of local driving. The gas savings is real, but only on local driving (fast charging on the highway can cost almost as much as filling up with gas). And the gas savings is real only if you drive tons of miles locally (IMHO the threshold is about 12K miles, we drive 18K miles per year home charged miles). An EV is very much a special case situation. Bonus points if you have a bit of a prepper mindset and can set up home solar (if the Dims make gasoline hard to come by again or too expensive again, they can't stop my local driving in my EV).
Yes that is about what you would need in a wire to carry enough current to deliver that much power.
“But, and this is important, you must do your homework before getting an EV. The 1,700 mile trip I sometimes take has plenty of fast chargers. Your trips may not have many fast charges. “
Yes, that’s a very important requirement. Lots of charging stations if you have shorter range.
And thanks for sharing your experience. My wife is looking for a new car and trying to decide between all electric or plug in hybrid. She mostly just drives around town.
5-minute charging
People are clueless as to how big an infrastructure commitment would be needed to support that level of power transfer and just how dangerous it is.
So ya, not buying it.
********************************
Exactly. These people think that all you would need to do is to plug it in to recharge it, just like an Iphone.
Too many Americans without STEM literacy!
Charging stations also have a tendency of getting sabotaged.
“The energy needed for 1000 mile drive is a lot of kilowatts. “
Uh, kilowatts is a measure of power, NOT energy.
Gonna need network of something like NuScale’s SMR
(Small Modular(nuclear)Reactor) powered charging stations to pull that off.
~Easy
For a short time I worked for an electric car startup that eventually gave up on the idea of making a car, and swapped over to “megawatt charging”. This would require that kind of technology and THEN some I think.
(FWIW, the company went out of business, so their technology is no more).
“5-minute charging”
Nope. It pays to read the article.
Article-—————
But as with all things that sound too good to be true, a closer look at the official source is necessary.
....
This could mean a future range of nearly 1000km (over 600 miles). A rapid charging time of 10 minutes or less (from 10-80% state of charge)
600 m × .7 × 0.25 kwhr/m = 105 who’s.
That is 12 minutes with Tesla’s V4 charger.
“Right you are. The energy needed for 1000 mile drive is a lot of kilowatts. To transfer so many kilowatts in 5 minutes? There is no such infrastructure possible in practical situations.”
Read the rest of the article ...
Too many people don’t read the whole article ...
“Or did I screw up someplace?”
Not reading the whole article?
I assumed most intelligent people would understand I was referring to kilowatt HOURS. The main engineering point is all those KWH have to be crammed into 15 minutes. That would require very high amperes & voltage. Not practical.
“I assumed most intelligent people would understand I was referring to kilowatt HOURS.”
LOL!
“The main engineering point is all those KWH have to be crammed into 15 minutes. That would require very high amperes & voltage. Not practical.”
I ASSUME you didn’t read the article!
“The main engineering point is all those KWH have to be crammed into 15 minutes. That would require very high amperes & voltage. Not practical.”
From the article:
600m × .7 × .25 kwhrs/m = 105 kwhrs.
Tesla’s V4 charger can do that in 12 minutes.
The BYD charger can do that in 6 minutes.
Depends on how much energy gets lost in terms of heat during the charging process. If they can get better efficiency during the charging process(less loss due to less heat) with these batteries then perhaps this would help mitigate stresses on the electric grid! Brute force charging might be a real stressor but if there is an option for a gentler but longer charging period with these batteries...say and hour or two, then the electric grids might not be in such danger.
“An EV nut wants gas pumps to run as slow as charging stations “
Grow up.
One needs to look at the average usage.
At 12k miles per year, that is 33 m/day or about 8 kwhrs.
That is about equivalent to a central AC running two hours a day.
“The main engineering point is all those KWH have to be crammed into 15 minutes. That would require very high amperes & voltage. Not practical.”
No? Already exists.
BYD has a 1000 kw charger.
In 15 minutes it can output 250 kwhrs.
At 0,25 kwhrs per mile that is 1000 miles.
AND, BYD is making cars with TWO charging ports that enable it to be connected to TWO charging stations!’
At
I read the whole article - what did I miss?
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