Wow! That is amazing!
Can batteries accept it that fast??…apparently. 
That is a measure of speed! Sound travels at about 760 miles per hour (did you hear a sonic boom?). The information you are trying to convey is the amount of work (distance traveled) that can be accomplished by charging the car at a given rate (in kW?) over a given time. This doesn’t in any way change the speed of the car (although the speed of the car (load) may diminish or increase the speed of battery discharge).
The car is not moving. The 250 kw is the amount of power from the charger.
Power is a measure of energy/time.
Energy is added to the battery very quickly.
It only takes a few minutes to add enough energy to your battery to handle daily driving.
a 120v outlet will send about 1kw of power to the car, which is good for about 3 miles per hour of charging. It would take days to fill a 70kWh battery pack.
a 240v 30 amp receptacle can send 5.7 kW of power to the car, which is good for about 22 miles of range per hour of charging. Thats about 12 hours to fill up the battery pack on a model Y performance.
I installed a 60 amp breaker and hard-wired to a Tesla Wall charger that sends over 11 kW of power to my car for about 44 miles of range per hour. It only takes a couple hours to fill up the battery after a typical day’s work and errands.
a Tesla SuperCharger has 150, 250, or even 350 kW charging speed. That’s an awful lot of juice. Yes, up to 1200 miles of range added per hour at 250 kW. The cybertruck can take 350kW but due to its weight and size that still about 1200 mph. It only takes a few minutes to top up.
I can park at Bucee’s and charge up for free in the time it takes to use the restroom and buy a brisket sandwich.
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Nice wrap, Bert!
And good explanation about the EV charging.
I participated in a webinar that focused on EVSE. Bryce did it. It was educational. Especially for me who knows virtually nothing about them
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That’s not what your original post said. I knew what you meant. I doubt however that the rate of charge of batteries can be multiplied like that. The charging rate will be exponential not linear. Charging rate doesn’t even reach a nominal rate until battery temperature is equalized.
Yes, of course you won’t be charging for an hour at that rate. The battery won’t hold that much.
“Ain’t nobody got time for that.”
Charging speed is fast at first and drops off as the battery fills up. Most people don’t charge past 80% because the charge speed drops quite a bit as the battery gets close to full.
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I can not speak for other brands since I do not have experience, but for teslas if you set the destination to a supercharger, the battery will begin “preconditioning”.
For a 250 kWh charger, arriving preconditioned it will within seconds begin charging at a 150 kWh+ rate. I usually use the bathroom, grab a sandwich, and come back and it’s charged 50%+ in that time.
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Ford to give away free charging units to new EV buyers
Driving the news: The automaker announced Monday that anyone who buys or leases a new Ford EV during the fourth quarter will qualify for a free EV charging unit and home installation through the Ford Power Promise program.Ford CEO Jim Farley tells Axios that if the offer is well received, the company will likely extend it.
“I obviously never had the chance to talk to Mr. Ford, but I can imagine that when he launched the Model T, he would have loved to have included a gas station for every customer,” Farley said in an interview, referencing founder Henry Ford.
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