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Old 06-13-2017, 12:16 AM   #1 (permalink)
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Default 9 minute charge 400 mile range

Lets hope its true nice looking car

https://www.yahoo.com/tech/fisker-te...203725394.html
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Old 06-13-2017, 07:51 AM   #2 (permalink)
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I would like to know how this is possible.

A top range Model S goes a bit over 300 miles on 100kwh of batteries. If we're generous and say this car is more efficient, we could say it has 115kwh.

115kwh in 9 minutes is a charging rate of 767kw. How exactly are they planning to deliver that to the car?

From a company whose last car had a tendency to catch fire sitting in dealership lots.

My guess is there are a whole load of silent asterisks in that claim.

*Charging under ideal conditions. Recharge means between 25 and 75% SOC. Warranty void it fast charging done more that X times per month.
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Old 06-13-2017, 08:55 AM   #3 (permalink)
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New technology supposedly

. "That?s incredibly fast, but Fisker says the car relies on patent-pending battery technology designed by researchers at UCLA, and abandons the typical lithium-ion battery trend in favor of supercapacitors using graphene."
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Old 06-13-2017, 10:53 AM   #4 (permalink)
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Default Price "minor" detail....

Price is the major detail for me..... Beautiful car. (I guess the old saying applies.... "If you have to ask the price, you can't afford it...")
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Old 06-13-2017, 11:16 AM   #5 (permalink)
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Quote:
Originally Posted by Sam12345 View Post
New technology supposedly

. "That?s incredibly fast, but Fisker says the car relies on patent-pending battery technology designed by researchers at UCLA, and abandons the typical lithium-ion battery trend in favor of supercapacitors using graphene."
Riiiight. But how do you transfer that much power into the car? What kind of cable/plug capable of 0.75 megawatts continuous can you plug into this thing? It would be too stiff/heavy to lift.

Tesla's supercharger cables are 145kw max and the size of a gas station hose already (and more unwieldy, especially in cold weather).

This is 5.5x that power. Tesla's already picked the low hanging fruit of upping the voltage to 480VDC. Going higher than with DC cables meant to be handled by humans is... fraught.
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Old 06-13-2017, 11:24 AM   #6 (permalink)
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Maybe there's a big funnel in the grill and you just drive into it. Like mid-air refueling.

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Old 06-13-2017, 02:08 PM   #7 (permalink)
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The Kaner lab page at UCLA provides some clues about how they aim to achieve the fast charging times. See topic #3 at Conducting Polymers

"Battery users would like energy storage devices that are compact, reliable, and energy dense, charge quickly, and possess both long cycle life and calendar life. We demonstrate 3D high-performance hybrid supercapacitors and micro-supercapacitors based on graphene and MnO2 by rationally designing the electrode microstructure and combining active materials with electrolytes that operate at high voltages. These hybrid supercapacitors can store as much charge as a lead acid battery, yet they can be recharged in seconds compared with hours for conventional batteries."

I am not sure if the high voltage referred to is the 2 volts in the paper https://docs.google.com/viewer?url=h...gy-Density.pdf or some higher total capacitor voltage. A later publication contains even more forward-looking statements about this: https://www.researchgate.net/profile...capacitors.pdf
(This link produced a garbled .pdf file, but it might work for others.)

It is possible that the charging cable utilizes a high temperature superconductor to carry the current for the claimed nine minute charging time.
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Old 06-13-2017, 06:17 PM   #8 (permalink)
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EEStor affiliate !!!!

NOOOOOOOOOOOOOOOOOO
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