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Where is my battery capacity?

Discussion in 'Model S: Battery & Charging' started by pappie, Dec 31, 2015.

  1. pappie

    pappie Member

    Aug 31, 2015
    Tonight I loaded to 100% in my 90D and this morning I had 418 km typical (can this be right)?

    Today I have given some demo's and drove really hard so my display says that since my last charge I have user 274 wh/km.
    The car reports now 9% battery left with 39 km typical. I drove 245 km and display says I have used 67.2 kwh.

    67,2/91*100=73,85 kwh.

    Where is my 90 kwh battery capacity?

    Strange enough I have the follow detail readout wia the VisibleTesla App:
    Battery: 70kWh
    Color: Pearl White
    Roof: Unknown
    Wheels: Silver 19"
    Seats: Unknown
    Decor: Carbon Fiber
    Extended Nappa Leather Time: true
    Air Suspension: true
    Tech Upgrades: [
    Tech Package: true
    Power Liftgate: true
    Premium Lighting: true
    HomeLink: true
    Navigation: true
    Audio: [
    Upgraded: false
    Sat Radio: false
    Charging: [
    Supercharger: true
    Twin Chargers: false
    HPWC: false
    Options: [
    Parcel Shelf: true
    Paint Armor: false
    Third Row Seating: false
    Newer Options: [
    Parking Sensors: false
    Lighting Package: true
    Security Package: true
    Fog Lamps: true
    Cold Weather Package: true

    This week I had already several times that a 270 km day was ending in watching out to get home. So I have the feeling to have only an actual range of 275 to 300 km.

    Is here anyone with a reasonable explanation?
  2. apacheguy

    apacheguy S Sig #255

    Oct 21, 2012
    So Cal
    Which model is displayed by selecting the center T icon at the top of the 17"?
  3. Zextraterrestrial

    Mar 11, 2010
    Humboldt/Los Altos
    #3 Zextraterrestrial, Dec 31, 2015
    Last edited: Dec 31, 2015
    there is the fact that if you are pulling out power at a faster rate it is less efficient as there will be more heat losses.
    and there is no way you have a 70 and pulled 67 out of it with that rate of usage (and still at 9% too)

    my record with a 85kWhr is 75.9 kWhr and that was a 4 1/2 hr trip of 242 miles (hills and driving slow)

    try doing the same charge sometime but then driving really gently and compare the Whr/km to the power used - should see a pretty big difference
  4. pappie

    pappie Member

    Aug 31, 2015
  5. Brass Guy

    Brass Guy Member

    Jan 5, 2014
    Holbrook, MA
    1. You cannot use all 90 kWh, some will always be in reserve to protect the battery. If the charge gets too low, the battery cannot be recharged. The car's software prevents this.
    2. Energy used or lost while the car is off is not added to that tally. This includes preheating with the app and "vampire" losses at the very least.
    3. The percentage shown is an estimate. You may or may not be able to drive past 0%.
  6. mostenec

    mostenec Member

    Dec 28, 2015
    Lviv (Ukraine)

    It is possible more in detail about it? can I have just such a case, the main battery is low too, and I can`t charge the ring port is lit in red.
    It can not charge, the port is open but does not burn white.
  7. Troy

    Troy Active Member

    Aug 24, 2015
    Hi pappie,

    Is it possible that after charging stopped and before you read 67.2 kWh, the car was parked for a few hours? Any consumption that occurs while the car is not in drive mode is not counted by the trip meter. For example if charging stopped at 3 am and you left at 9 am, the car would consume a lot of energy for battery thermal management, balancing the battery and connectivity. In cold weather this passive consumption is about 4 kWh per day. None of this counts towards the 67.2 kWh. Similarly after you drove off but before you read the 67.2 kWh, if you left the car parked for a while (air conditioning running or car turned off), consumption during that time is not counted by the trip meter.

    The 85 kWh battery has about 75.9 kWh usable capacity. I would expect the 90 kWh to have about 80.4 kWh usable capacity. I can't think of any other reason except passive consumption.
  8. Oyvind.H

    Oyvind.H Member

    Aug 17, 2012
    Oslo, Norway
    I hope others can use this thread or the 90D Range slowly declining thread and report development of 90D range.

    Tesla has claimed that it`s only a range presentation problem. In other words, the range is supposed to be unchanged, even though the car reports is as sinking. One should still get 6% better range in the 90D than the 85D.

    However - the energy each km/mile contains is a fixed numer. (i.e. one rated mile equals xxxWh). If users now see that the amount of kWh usable is in line with the range numbers, and that usable kWh is rapidly dropping, then Teslas claim that it`s only a range display issue is incorrect.

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