Recent content by Dan5

BMW i3 Forum

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    Battery Chemistry

    ultraturtle Here's the car and driver article http://www.caranddriver.com/reviews/2013-tesla-model-s-test-review Graph with the battery pack comparison with a leaf. 1323 lbs/601 kg for 85 kwhr pack ~ 140 Whr/kg Plus when that article Dec 2012 was written only 85 kwhr packs were being...
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    Battery Chemistry

    Actually that was the reason I used the Model S as a comparable vehicle, it also has a water cooling system to keep the batteries cool. I think Tesla and BMW are both capable of designing a cooling system that is lightweight, but still provides adequate cooling. The Tesla is a very...
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    Battery Chemistry

    That is why I used other EVs and packs as comparisons. See my Tesla comment, that was also at the pack level, as were all the other calculations. So essentially what we have at the pack level is below 100 Whr per kg. That eliminates most of the high energy ones, cobalt oxide, nickel...
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    Battery Chemistry

    Yeah, I didn't really believe the iron phosphate either. A123 likes to confuse people, i remember they were saying they were the Volt supplier or something years ago. So that narrows it down to either Manganese oxide or lithium titanate since they fit the battery energy density.
  5. D

    Battery Chemistry

    Let us go through what we know about the BMW i3 battery specs, maybe we can get to the bottom of it based on other batteries used in other cars. Also the Tesla Roadster is lithium cobalt oxide and the Model S is Nickel Cobalt Aluminum oxide Here's what we know: Lithium Cobalt Oxide- used in...
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