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Tesla to make 8.2 million batteries daily

Discussion in 'News' started by Nvbob, Nov 20, 2014.

  1. Nvbob

    Nvbob Roadster 1256

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    Small article in the Nevada Appeal this morning:

    http://www.nevadaappeal.com/news/local/13874191-113/nevada-tesla-bacon-range

    Here's what I found rather interesting:

    :cool:
     
  2. apacheguy

    apacheguy Sig 255, VIN 320

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    8.2 million cells? How many packs does that translate to?
     
  3. Nvbob

    Nvbob Roadster 1256

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    I imagine they will be used for multiple purposes - grid power storage, solar city hybrid systems, auto battery packs, etc.

    The article did not go into too much detail.
     
  4. Kalud

    Kalud Member

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    #4 Kalud, Nov 20, 2014
    Last edited: Nov 20, 2014
    Quickly and dirty, 8,200,000 / 7200 = 1138 (85kWh battery packs)

    Real number is 71xx per 85 packs, I don't have that number handy but remember that this is a daily number not weeky, so its 60x to 70x more than the current production (about 1000/week)
     
  5. FredTMC

    FredTMC Model S VIN #4925

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    no, it's 1138 packs.

    But, keep in mind that the GF will be producing a larger form factor cell and a good percentage will go to model 3. So the number of equivalent car packs this 8.2m represents is probably significantly higher (2k car packs/day)
     
  6. Kalud

    Kalud Member

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    Wow yes, so 60x to 70x more than current production.
     
  7. AnOutsider

    AnOutsider S532 # XS27

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    This statement interests me. Typically the warmer climates do better on range, and the colder having more issues (due to pack warming and other elemental factors). So to say it'll go 220 in warm climates, and above 300 in NV (a warm climate) is a bit odd. Did they really mean that the excess heat in NV would mean longer range? Or did they mean 220 in the cold and above 300 in the heat?
     
  8. bollar

    bollar Disgruntled Member

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    Roughly 1100 85 kWh packs.
     
  9. okashira

    okashira Member

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    They won't be 18650 cells. Why would they be?
    Rumors are for a 21700 cell, 5Ah.
    So, a Model S would need ~4000 cells.

    8 Mil cells per day, and I am guessing 0 available to small time entrepenurs, e-bike builders, etc.

    I am sure they will be happy to sell you an off grid storage pack for ~$15 per cell, though. :cursing:
     
  10. ecarfan

    ecarfan Well-Known Member

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    About 30% of Gigafactory output will be for stationary grid storage, and when Model 3 is in full production probably over half of the packs produced will be significantly smaller than 85kW.
     
  11. Model 3

    Model 3 Active Member

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    And about 30% of the GF output will be produced of cells imported from Panasonic's other factories. So the cells produced in the GF will almost all go to produce car-packs for Teslas.
     
  12. Grendal

    Grendal Active Member

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    I take this to mean that there will be two battery packs. One that has a 300 mile range and one that will have a 220 mile range. That fits perfectly with the Model S. I think the person is repeating what they think they heard from Tesla and getting it wrong. Certainly temperature does have an effect on range and this person is mixing and matching different elements together from the way it sounds.
     
  13. RobStark

    RobStark Active Member

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    He did not say "warm" but "hotter". So my guess is he is referring to Arizona and similar places in the Summer where LEAF battery packs go to die.


    I think 220 miles above 105 degrees.

    Reno average annual temperature 67 degrees.
    Las Vegas 80 degrees.
    Phoenix 87 degrees.


    105 degrees is the tipping point to degrade lithium ion batteries at an acceleration rate. Las Vegas does average 105 in July but many places in Arizona average higher than that in July like Phoenix at 112.
     
  14. PeterW

    PeterW Member

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    shouldn't it be possible to take the number of cells made in a day, estimate how many day a year the factory would operate and get a total number made yearly. Then if that was 50GWh you could work out how many cells to create 1 KWh? Then how many cells would make up an 85KWh pack, a 50KWh pack, a 45, a 40.

    - - - Updated - - -

    8.2 times 360 days equals 2952 million cells. divide by 50 million KWh and you get 59 cells per KWh.
    So an 85KWh pack would take 5015 cells
    50KWh equals 2950 cells

    - - - Updated - - -

    Would someone like to comment on how many days a year a factory like this would operate?
     
  15. derekt75

    derekt75 Member

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    I think you're giving the author too much credit. The simpler explanation is that the author is just wrong and confused.

    Model S 85 kWh pack is rated at 300 miles in fair weather without climate control, but 220 miles at 0°F (with heater). I suspect that's not a coincidence.

    Nevada is generally at a higher elevation which should get you more range (15% more at Reno's elevation?), but I doubt the author is that clueful.

    Incidentally, I don't think pack heating is the major driver in the reduced range; I think cabin heating and increased air density are the bigger draws. Intriguingly, the lower air density at 110°F more than offsets the greater A/C draw at 110°F.
    Your Questions Answered | Tesla Motors
     
  16. RobStark

    RobStark Active Member

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    S 85 is rated by the EPA at 265 miles although it can do 300 miles driving at a constant 55 mph.

    But I think most people in the US speak of rated or approximated EPA range.

    I think author probably heard right from the horse's mouth.
     
  17. derekt75

    derekt75 Member

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    well "rated" might have been a poor choice of words by me, but
    If you go to the Tesla page, the default is 306 miles at 70°. Turn on the heater and drop the temperature to its lowest setting and you get 220 miles.


    I think that's a simpler explanation than trying to assume that the author really heard that the pack will do 300 miles in a normal environment, but due to some downright frightening longevity issues will only do 220 miles in a hot climate.

    Until a more plausible explanation is unearthed, I stand by my conjecture that the author is simply mistaken.
     
  18. Richard Benson

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    Tesla is working on Graphene battery for ranges of 800 Km ..according to Tesla Model S is still creating nearly 500 Km range ...
     
  19. JRP3

    JRP3 Hyperactive Member

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    Source?
     
  20. sitter_k

    sitter_k Member

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