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Daryl, not you too! I don't know who started all this technology "agnostic" business, but I cringe every time I hear it.
good point. Thanks!Daryl, not you too! I don't know who started all this technology "agnostic" business, but I cringe every time I hear it. There is a contingent of us at work who have started a campaign to wipe out the misuse of the word.
Agnostic means that you hold a concept as unknowable. Does your approach assume there is no way to know what chemistry you are using? Or does it deny that there is any way to tell? Or that the existence of chemistry can neither be proved nor disproved? I doubt it.
Please, I beseech you, try to use the word neutral, or indifferent, or maybe nonchalant.
Not sure why you think engine+battery will produce less power than battery alone?
Remember this? Marketing 2.0: More on the Volt
Assuming the Volt and Tesla use the same battery type, their overall lifetime cost will be at least equal considering the Volt will need more frequent replacement though the Tesla pack costs more upfront.QUOTE]
It's a good thing that the Volt batteries will not be the same as those used by Tesla, at least not on the current ones planned for use in the Roadster. The Tesla batteries are rated to have 500 charge cycles. Those in the Volt are rated much higher.
This all reminds me of the lengthy discussions we had about regen behavior on the Roadster. People wanted a regen strength knob or at least a button for "hill mode", but apparently they plan to leave it non driver adjustable.
A button for "ICE assist now please" is sort of the opposite of the Toyota Hybrid "EV mode" button. . .
What about a series hybrid with a very small ICE that runs all the time?...
#2: Full performance for a longer period because you would maintain battery reserves longer...
I touched on this earlier on. Like Michael said in his response to you, the Volt's batteries have a significantly higher charge cycle rating than Tesla's 500 charges. The a123 pack is quoted to handle 7000 cycles at the extreme but is guarantee for at least 4000 cycles.Assuming the Volt and Tesla use the same battery type, their overall lifetime cost will be at least equal considering the Volt will need more frequent replacement though the Tesla pack costs more upfront.
Thanks for the response Darryl, I think I understand more clearly why Tesla chose the current cells for the Roadster. It has to do with higher energy density. There seems to be many more options opening up in the future and I look forward to hearing the strategy for the Whitestar in using these options.@stopcrazypp - we can use whatever batteries are available on the market - we chose to use the high energy density, relatively low cycle life batteries for the roadster. We could use LiPO4 cells for a different application. Several manufacturers offer cells of various chemitries and characteristics. One of the advantages of our approach is that it is chemistry agnostic. For example, in the future, it is conceivable we would offer different types of batteries for the same car to give customers choice (energy density vs. cycle life for example)