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$300/kWh - battery vs. NRC Report

Discussion in 'Prius, Hybrid, EV and Alt-Fuel News' started by bwilson4web, Jul 20, 2010.

  1. bwilson4web

    bwilson4web BMW i3 and Model 3

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    NRC panel of advocates for dead-end hydrogen cars trashes plug-in hybrids in deeply flawed report, Part 2

    Let's see:

    • $2,400 - price of replacement NHW11, 20 kWh traction battery
    • 80%-40% = 40% usable capacity
    • 40% * 20 kWh = 8kWh usable
    • $2,400 / 8kWh = $300/kWh * * * * BINGO * * * *
    Ok, is the math wrong?

    Bob Wilson
     
    #1 bwilson4web, Jul 20, 2010
  2. austingreen

    austingreen Senior Member

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    It's only off by an order of magnitude. I think the capacity of that battery was 1.8kwh, not 20 kwh.

    A better place to look is commercial lithium. The JCI-saft pack that will go in the ford transit connect is $750/kwh (that is the price to ford) and it has an expected warranty of 10 years 120,000 miles (life of van in fords terms). The Leaf and Volt power batteries seem to be in this ball park of price. Nissan claims that they should be able to reduce price in 2 years to around $375/kwh with the volume and new plant in tennesee. Tesla's cost is about $200/kwh for cells, but must hand assemble them which doubles the price and warranty is only 3 years. As you can see there are obstacles to $300, but it is with in reason. There is also no reason some plug in hybrids would not be competitive with $500/kwh packs that are easily achievable.
     
    #2 austingreen, Jul 20, 2010
  3. bedrock8x

    bedrock8x Senior Member

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    #3 bedrock8x, Jul 20, 2010
    1 person likes this.
  4. bwilson4web

    bwilson4web BMW i3 and Model 3

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    I see it now. I confused peak power draw, 20 kW, versus the battery capacity. The 20 kW is not for an hour. This helps me with another scheme.

    Sorry, thanks for the correction,
    Bob Wilson
     
    #4 bwilson4web, Jul 20, 2010
  5. clett

    clett New Member

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    BYD's LiFePO4 batteries as used in the F6DM are also under $300 per kWh, including all electronics and casings etc.
     
    #5 clett, Jul 21, 2010
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