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Not driving for a week. Keep plugged in or not?

Discussion in 'Model S: Battery & Charging' started by sevenout, Oct 9, 2017.

  1. sevenout

    sevenout Member

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    I'm going on a business trip tomorrow for a week so I will be leaving my MS at home. The question is should I leave it hooked up to my NEMA 14-50 the whole time I'm gone or leave it disconnected? The car will probably have about 80% SoC when I park it tonight. I think I read somewhere that it's recommended to leave it plugged in but just want to make sure.
     
  2. gaswalla

    gaswalla P4201/85/airsusp/pano/19i

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    Yes. Definitely keep plugged in.
    As Tesla recommends - ' A plugged Tesla is a happy Tesla '. It's on their website somewhere
     
    • Like x 3
  3. Tam

    Tam Active Member

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    From your Owner's Manual:

    "About the Battery

    Model S has one of the most sophisticated battery systems in the world. The most important way to preserve the Battery is to LEAVE YOUR Model S PLUGGED IN when you are not using it. This is particularly important if you are not planning to drive Model S for several weeks. When plugged in, Model S wakes up when needed to automatically maintain a charge level that maximizes the lifetime of the Battery.
    There is no advantage to waiting until the Battery’s level is low before charging. In fact, the Battery performs best when charged
    regularly.

    Note: If the Model S Battery becomes completely discharged in a situation in which towing is required, the owner is responsible
    for towing expenses. Discharge-related towing expenses are not covered under the Roadside Assistance policy."
     
    • Informative x 1
  4. FlyingCookie

    FlyingCookie Member

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    Definitely leave plugged in, and maybe have a bit of spirited driving to get it closer to 60% SOC... 80% should be fine, but the "battery experts" say 40-60% is best. But for only a week, I wouldn't sweat it too much.
     
    • Like x 1
  5. sevenout

    sevenout Member

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    That's what I thought. Thanks!
     
  6. Ugliest1

    Ugliest1 S85: "Sparky"

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    I'm currently away for a week, and I left the car parked in my underground spot unplugged with less than 40% SOC, and I'm not worried. Yes it would be better to have it just plugged in, but I live in a condo with two shared EV stations... so not cool to do so.

    However, if it was "several weeks" I would for sure take steps to be able to leave it plugged in and checked that no one had come along and unplugged. Like getting a neighbour to water your plants, I guess.
     
  7. yorich18

    yorich18 New Member

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    does this hold true even if it's not charging? I pay a buttload for electricity during the day (44 cents/kwh) so is just having it plugged in to the charger enough, or does it actually need to be charging?
     
  8. kort677

    kort677 Active Member

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    from the book of elon, "a plugged in tesla is a happy tesla"
    find any sort of an outlet and keep the car plugged in, if the car is not charging it isn't consuming electricity
     
  9. tomas

    tomas Only partially psycho

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    Set it to charge at midnight.
     
  10. tomas

    tomas Only partially psycho

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    I often leave car for weeks. Sometimes months. For stored car, the best thing for your battery is to keep close to 50%. That is not in the Tesla documentation, but is clear consensus of battery scientists. So, before I leave I try to be around 50% but not critical as vampire drain will eventually get you there. Then I set slider to 50% and leave charge time at midnight to get best rates. Every few days I get alert that car took a sip.
     
    • Helpful x 1
  11. kort677

    kort677 Active Member

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    any level between 20% and 80% would be fine
     
  12. LMichel

    LMichel Member

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    Really? I never knew it would do that... Nice!

    I'm a snowbird and will be leaving my S75D for 3 Months!! NOW what would you do?
    I assumed just leave it plugged in and go south. None of that "Power Off" stuff or anything?
    Also, the car will probably spend some very cold time, dormant, in the garage with temps around 0 degrees F.
    Thoughts?
     
  13. brkaus

    brkaus Active Member

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    I would set to 50%, plug in, and leave it. It will want to warm the batteries, I believe.
     
  14. kort677

    kort677 Active Member

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    just plug it in and all should be well, your biggest concern should be the tires getting squared off
     
  15. tomas

    tomas Only partially psycho

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    Agreed. That’s what I do. Also go into your Tesla app on phone and set it to receive notifications for both charging complete and charging interrupted. I’ve left for 3 months with no issues.
     

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