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Max Battery Power...Heating Est. 35min???

Discussion in 'Model S' started by jsimon77, Jan 14, 2016.

  1. jsimon77

    jsimon77 Member

    Joined:
    Feb 15, 2015
    Messages:
    30
    Location:
    Los Angeles, Ca
    So..I have not tried the max battery thing in my P85D. But I wanted to turn it on so I could try Launch mode.

    When I turned it on, it told me it was heating and the estimated time was 35 minutes? I'm totally lost.

    Can someone point me in the right direction so I can better understand this? I figured that there would be a 2-3 minute time for max battery but 35 minutes? Hu?

    I'm in SoCal.
     
  2. LetsGoFast

    LetsGoFast Active Member

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    Oct 13, 2014
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    1,342
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    Virginia
    You're lucky you don't live in a colder climate. I've seen it predict over an hour. The good news is that launch mode doesn't require you to have reached the heat level first, just that you've turned it on.
     
  3. jsimon77

    jsimon77 Member

    Joined:
    Feb 15, 2015
    Messages:
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    Location:
    Los Angeles, Ca
    Thanks...I did figure out that I could use launch mode. I guess I just don't understand this feature at all. Who gets in their car for 30+ minutes to wait to be able to use it. So odd.
     
  4. Candleflame

    Candleflame Member

    Joined:
    Mar 9, 2015
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    249
    Location:
    UK
    Just out of curiosity Letsgofast. If you preheat the battery and its cold outside or you are on a very long journey which involved a few S/C stops. As long as you are driving, does the battery get heated sufficiently by waste heat generated from driving at cruising speeds or does the car have to use additional energy to heat the battery?
     
  5. AWDtsla

    AWDtsla Active Member

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    Mar 3, 2013
    Messages:
    2,139
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    NE
    Maybe if you could even do it from the app. But basically you have an hour of 5+kw draw. If you want to go fast, you have to do it on shore power to preserve SoC, so it's more than just get in and drive away while turning it on.
     
  6. apacheguy

    apacheguy Sig 255, VIN 320

    Joined:
    Oct 21, 2012
    Messages:
    3,728
    Location:
    So Cal
    It takes a while to get the pack up to 48 C. Definitely do not recommend max battery unless you ensure the pack does not get over 30 C by disabling it.
     
  7. David99

    David99 Active Member

    Joined:
    Jan 31, 2014
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    2,058
    Location:
    Brea, Orange County
    Driving in very cold climates I found the car usually has enough heat from the motor/inverter to keep the battery just warm enough. Supercharging will heat the battery up petty well. So on long trips between Superchargers, you will never see the battery heater kick in. I have driven 4 hour legs between Superchargers at very low temperatures, and the battery heater never turned on. If you stop without charging and the car sits in the cold for several hours, it definitely gets cold and the battery heater will kick in at least in the beginning. Once there is enough heat from the motor and inverter it will turn off and the battery is kept warm enough "for free".
     
  8. ElectricTundra

    Joined:
    Feb 5, 2015
    Messages:
    536
    Location:
    Tundra
    How did you drive continuously for 4 hours between SC's in cold weather without stopping or draining the battery?
     

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