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Old 12-04-2012, 06:16 PM   #117
sxotty
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Join Date: Sep 2005
Location: Pittsburgh
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Quote:
Originally Posted by elirentz View Post
Not getting into too much detail, just look at the charge rates and capacities of the three. Its not just as simple as adding more batteries or a bigger breaker in the charger. The karma is the closest in complexity but look how thats turned out for fisker a bunch of extra crispy karmas.

After coffee edit: Not saying that other parts of hybrids aren't electrically more complicated. Obviously the S or other electrics have no need for ECU's or emissions and power transfer controls. I should have specified just the charging and battery controls and safety sytems are more complicated, otherwise you are right.
I am only talking about the charging and battery.

Battery charge rates are properly compared in C-rate terms. And from where I sit there is nothing special about the S. The volt has fancy schamncy cooling, the fisker did as well (though they haven't yet mastered how to use a hose clamp ).

What is coming out of the wall has nothing to do with the car 20, 30, 40, 50, 80 amps etc... The vehicle designers can choose to accommodate different charging standards. DC fast charging has no purpose for a PHEV, but the new GM EV supports DC fast charging. It only takes 20minutes and is using the new SAE standards. I am completely unimpressed with proprietary charging standards which are destined to fail. It is silly that they can't sign onto the same standard as others since the charge points installed are therefore less useful. I know this stuff is early, but I certainly hope Tesla in the future will work with standards organizations to try and get future vehicles to be more compatible with a wider array of DC fast charging infrastructure.
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