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99 KWh Battery?!

Discussion in 'Model S: Battery & Charging' started by traxila, Mar 9, 2014.

  1. traxila

    traxila Member

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    Was at the Tesla Store today at Roosevelt Field Mall. Salesperson there pointed out graphic on electric cost to charge the battery. The slider had previously gone up to 85. But after latest update it now goes to 99! I think this might be the answer to the Model X range issue. I am stoked.:love:
     
  2. David99

    David99 Active Member

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    Could it be that it was changed to percent?
     
  3. tom66

    tom66 Member

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    It might use 99kWh to charge 85kWh pack, there are some losses in charging.
     
  4. traxila

    traxila Member

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    No. It was not in percent. It was in KWh. At least the
    salesperson and I thought so.
     
  5. Yggdrasill

    Yggdrasill Active Member

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    It's the charging (in)efficiency. Tesla Charging | Tesla Motors

    110V, 12A: 132.6 kWh
    240V, 24A: 100.8 kWh
    240V, 40A: 99.0 kWh
    240V, 80A (duel charger): 98.7 kWh
     
  6. traxila

    traxila Member

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    Bummer. That's quite the loss for an 85 kWh charge. Oh, well.

    Yeah, well I say no reason for that cut rate 99, let's got with the full price 100!
     
  7. dhanson865

    dhanson865 Active Member

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    120V, 12A: 132.6 kWh (30% more power used, big penalty)
    240V, 24A: 100.8 kWh
    240V, 40A: 99.0 kWh
    240V, 80A (dual charger): 98.7 kWh

    Goes to show that any 240v charge rate is pretty efficient but any 120v charge rate is very inefficient. I just didn't realize the penalty was 30% more power used.

    It also shows that dual chargers are faster but not significantly more efficient. After looking at that I'm still good with a single charger, save the money you would pay for a HPWC and put it into the better tires (3% more range) and pocket the difference in cost.
     
  8. Cottonwood

    Cottonwood Roadster#433, Model S#S37

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    Actually, if you follow the sequence, 60 to 85, then the next battery should be a 110! :wink:
     
  9. dhanson865

    dhanson865 Active Member

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    If they considered a 40, 60, 85 lineup maybe the jump is gross with more and more buffer in the larger batteries for a smaller net jump. Maybe the next one would be 100 after all.

    40 - 60 - 85 - 100
    40 - 60 - 85 - 105
    40 - 60 - 85 - 110

    which looks like the normal progression to you?

    I suppose the 110 goes with the whole "goes to 11" meme.
     
  10. 100thMonkey

    100thMonkey Member

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    if for no other reason I would seriously consider going with the twin chargers for resale value. Also, the high amperage level 2 stations that the twin chargers need, are less common where you are, but that is likely to change quickly. After owning EV's for just a couple of years, I have never regretted spending more money up front for faster charging, it's not how often you use it, it's how critical it is when you need it most. sitting around for twice as long waiting for the car to charge is lame. you can request the twin chargers without buying the HPWC.
     
  11. yobigd20

    yobigd20 Well-Known Member

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    It's not that the charging is inefficient but rather that it takes FOREVER and all the systems have to stay up and running and on while the charging is taking place. Since charging at 120V 12A takes forever, it's all the other electronics staying on that is eating up the juice and thus requiring a longer time to actually top off the battery to full.
     
  12. roblab

    roblab Active Member

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    #12 roblab, Mar 12, 2014
    Last edited: Mar 14, 2014
    If you go by percentage increase, 40 to 60 is a 50% increase, 60 to 85 is about 50%, and the next jump would be more like 120 kWh.

    Actually 60 to 85 is 1.4, and to 120 is comparable to that jump. So, 40 (now gone) - 60 - 85 - 120.
     
  13. LMB

    LMB Member

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    Engineers like round numbers, and 1.414... is a round number to an engineer. Specifically, it's half a binary order of magnitude. So, I always assumed that the next battery would be 120 kWhr and the one after that would be 170 kWhr and the one after that...

    Assuming that a 120 kWhr battery weighs about the same as today's 85 kWhr unit, [US] ideal and rated ranges would be around 420 and 375 miles!
     
  14. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    99 kilowatt hours in the car, 99 kilowatt hours. Turn it on, drive it around, 98 kW kilowatt hours in the car.
     
  15. yobigd20

    yobigd20 Well-Known Member

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    98 kilowatt hours in the car, 98 kilowatt hours. Turn it on, drive it around, 97 kW kilowatt hours in the car.
     
  16. WarpedOne

    WarpedOne Supreme Premier

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    97 kilowatt hours in the car, 97 kilowatt hours. Turn it on, drive it around, 96 kW kilowatt hours in the car.
     
  17. VolkerP

    VolkerP EU Model S P-37

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    I see this thread quickly reaching 100+ posts.
     
  18. ItsNotAboutTheMoney

    ItsNotAboutTheMoney Active Member

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    96 kilowatt hours in the car, 96 kilowatt hours. Turn it on, drive it around, 95 kilowatt hours in the car.

    - - - Updated - - -

    :D Seems like it.
     
  19. rdrcrmatt

    rdrcrmatt Member

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    The coast to coast cars had beta firmware 6.0 on them which displayed the battery level in percentage.
     
  20. SCW-Greg

    SCW-Greg Active Member

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    Side video from 60 Minutes this week.

    Scott Pelley, the correspondent interviewing Elon confesses his wife owns a Model S (for 9-10 months now). He asks Elon why don't they have a car with better range than the 230 miles they see. Here's what Elon says about battery improvements and priorities...

    Longer range for the Tesla Model S? - YouTube
     

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