Quote:
Originally Posted by Finkenbusch
Mercedes' lithium batteries will come from a new factory in France, operated by JCS. That's a joint venture between U.S. components supplier Johnson Controls and French battery company Saft.
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That is from the plug-in deal a while back. That's the Mercedes PHEV, which seems to different from the EV news.
On the Daimler & Tesla cooperation news post, there is an update near the end with other sources other than Elon.
Even though Tesla's battery pack doesn't sound like much, it's still an integrated solution and unique in it's 50+kWh capacity. That it's thousands of cells linked together isn't that important, there aren't any other production ready packs avaliable today in that capacity or we'll be seeing a lot more 200+ mile range EVs. It has gone through all the relevant safety and durability tests too. It also addresses the quote that you gave:
"Mercedes taps the vehicle's air conditioning system for chilled liquid to regulate the battery pack's temperature and uses special components within the battery pack to draw heat from the cells. Kohler says Mercedes considers cooling mandatory to safe and reliable long-term use of lithium batteries, whether in a hybrid or a pure electric car."
The Tesla Roadster's pack basically uses the same kind of system.
I'm not under any illusion that Tesla's system is the most advanced or anything (ie for example the charging speed and safety can be improved futher by replacing the cells with newer chemistries, there should be better ways to make a large battery pack than linking thousands of cells), but it's attractive for it's own reason (relatively good energy density for a battery pack, a full integrated pack with temperature control, ready for production).
Of course as an EV fan, I'll be happy even if Daimler makes a pack that's better, alone or with JCS (of course if the pack isn't any better then I would think it's better off to have them support Tesla

). That'll just make mainstream EVs come that much faster.