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Actual kWh capacity of P90D?

Discussion in 'Model S: Battery & Charging' started by Jawae, Aug 29, 2016.

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What is nearest ACTUAL capacity of your 90 kWh battery?

  1. 60

    0 vote(s)
    0.0%
  2. 65

    0 vote(s)
    0.0%
  3. 70

    0 vote(s)
    0.0%
  4. 75

    11.1%
  5. 80

    22.2%
  6. 85

    50.0%
  7. 90

    16.7%
  1. Jawae

    Jawae Member

    Joined:
    Jan 4, 2016
    Messages:
    9
    Location:
    Calgary, Canada
    I'm not sure if this content has been posted before. I am assuming a 90 battery = 90 kWh capacity.

    My P90D was made in Aug 2015 and I have owned it since Dec 2015 (it was a demo in a showroom).

    If I drain the battery from 90% to 25% (= 65% of total battery), 45kWh are consumed. Doing a little math, 45/0.65 = 70 which would suggest that my 90 kWh battery only stores an actual 70kWh.

    I looked again today and battery went 55% to 35% = 20% of battery and 14 kWh were consumed so 14.1/0.2 = 70.5 kWh.

    Has anyone else done these calcs? Is my car battery well below normal? Would love to hear data from other vehicles.

    Anticipated range as predicted by the car when at 90% used to be 471 km, but is now 465 km.

    Jason
     
  2. msnow

    msnow Active Member

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    SoCal
    Mine is closer to 84/84.5. I measured by charging from 2% to 100% and noting the kWh added in Remote S then estimating how many kWh was already in the battery at 2%. I voted for 85 because it was the closest.
     
  3. Jawae

    Jawae Member

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    Thank you. Curious: what is "Remote S"?
     
  4. scottf200

    scottf200 Active Member

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    1,271
    Location:
    Chicagoland ModelX S603
    www.google.com and do "Remote S"
     
  5. msnow

    msnow Active Member

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  6. emir-t

    emir-t Member

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    Location:
    Istanbul
    Usable energy is probably around 82 kWh judging by the 85 pack. It was 77 usable and the increase was 6%. Also the new pack is 3300mAh cells (also consistent with the 6% denser cells from original 3100mAh) 74parallel 96 series connected so 3,3 * 74 * 3,7 volts nominal * 96 = 86,7kWh. Tesla calls this 90 and only allows for 97% DoD to protect pack, so there you have 84kWh usable energy. ~2kWh of that is for the 12V replenishing and aircon/heating and other system usually. Cacapcity you can take out of a battery is really different depending on the usage and many other variables.
     
    • Informative x 2
  7. Jawae

    Jawae Member

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    Location:
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    Thank you all for the details. Much appreciated. Therefore, I should expect a 0% to 100% charge to consume about 86.7 kWh, as rated on the Remote S app. I will drive the battery as low as I can and do a full charge and see how much it will hold.
     
  8. emir-t

    emir-t Member

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    Location:
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    Please share with us after doing so. I'm curious if my assumptions will hold and your usable energy will indeed be ~82kWh.
     
  9. Jawae

    Jawae Member

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    Messages:
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    Location:
    Calgary, Canada
    I charged from 14% to 100% = 86% and Remote S shows that it added 67.38 kWh. 67.38/.86 = 78.34kWh. I updated my vote.

    Drive distances read: estimated=384, rated=406, ideal=524 km.
     

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