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Okay for Car to be Unplugged at the Airport Weekly?

Discussion in 'Model S: Driving Dynamics' started by Quick2Judge, Jun 6, 2017.

  1. Quick2Judge

    Quick2Judge Member

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    Almost every week I go on a 4 day business trip and must leave the car at the airport. Is a Tesla the car for me or will this destroy the battery? (Chargers are not available in my lot)
     
  2. mal_tsla

    mal_tsla Member

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    Its completely fine. These cars are not so fragile.
     
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  3. ShockOnT

    ShockOnT Quickish

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    For months I would only plug in one day a week.
    Just make sure you don't park with a very low battery, as it will lose 1% or so per day.
     
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  4. mal_tsla

    mal_tsla Member

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    Oh, that's a good point -- make sure you park with an extra 5%-7% more charge than you'll need to drive home safely when you return. Don't worry about hurting the battery, just make sure you have the miles you need.
     
  5. Quick2Judge

    Quick2Judge Member

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    Thanks for the feedback. I plan to take it to the airport with 70%+ charge. There was earlier posting about the 12V battery prematurely dieing if it wasn't regularly plugged in. Scares me a little. Further reading indicated per Tesla "A plugged in battery is a happy battery." and passages from the owners manual that it should be plugged in as much as possible. This scares me a lot.

    I am only in kidding myself...I will buy it shortly but want the know if the prudent thing is to take the Wife's Audi when I go to the airport.
     
  6. suraj1194

    suraj1194 Member

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    I just left the car at the airport parking lot for 4 days last week. No problem. And before that I left it in the parking lot for 10 days last winter. Again, no problem.
     
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  7. mal_tsla

    mal_tsla Member

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    12V battery will be maintained by the main battery as needed.

    And if it does fail, it's warranty. If it's out of warranty, it's a 12V battery. They're cheap. Enjoy the Tesla
     
  8. Veritas1980

    Veritas1980 Electric Viking

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    I don't have a charger in my parking garage and I often travel 4-10 days at a time with an unplugged car.

    Just go to the settings and make sure you:
    • Turn on energy saving
    • Turn off Always connected
    • Turn off cabin overheat protection
    I loose 0.3 to 0.5% per day, but this is also at a temperature controlled garage, so the battery management system doesn't need to heat or cool the battery while I'm gone.

    And as mal_tsla says, the main battery will maintain the 12V, not the charger. If you make sure the car is fast asleep by putting on the right settings and don't constantly wake it up by checking on the app. The usage on the 12V should be minimized.

    Come to think of it, Tesla should really put in a "long term parking" setting. This subject comes up quite often, and it would also be nice for the rest of us to just have a on/off switch in the settings (or even better, in the app).
     
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  9. Derek Kessler

    Derek Kessler Member

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    Should note: if it's cold at the airport while you're gone, your battery drain will be substantially higher.

    I ran into serious drain while parked for a week at the airport in February — the one week where it got bitterly cold. They have chargers, but they were all occupied, and I'd stupidly planned on using the chargers to recharge while I was gone. I, the idiot, had ~80 miles charge left. Even with energy saving on, always connected off, and range mode on I lost ~6 miles per day, enough that I wouldn't have made it home on the charge I had left. Ended up squeezing into a not-spot by the chargers and plugging in for a few hours to get enough charge to make it home.
     
    • Informative x 1
  10. jareade

    jareade Supporting Member

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    You are totally fine doing this. I leave my S unplugged from Thursday to Monday, every weekend, and only lose a mile or two each day. No problems.
     
    • Like x 1
  11. suraj1194

    suraj1194 Member

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    Could you please quantify the temperatures in question ? When I left the car parked in San Francisco last winter, I had similar concerns, but with ambient temperatures in the 40s (hey, it's not Ohio) then, I lost <20 miles total over 10 days. This time around I actually ended up losing proportionally more in hot weather (~10 miles in 4 days), perhaps because the BMC automatically tries to cool the car battery regularly ?
     
  12. topspin4hand

    topspin4hand Member

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    Good suggestion ... I hadn't thought of not checking on the app.

     
  13. Quick2Judge

    Quick2Judge Member

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    Hi JAREADE - thanks. Okay I just placed my order! Congrats you are the first to know. We will keep it our little secret. Have you noticed any significant battery degradation issues - is your max storage capacity less than others with equivalent aged vehicles? Based on everyone's feed back I think I will have no problem getting home. Still worried this usage pattern (unplugged four days a week almost every week) may damage the battery.
     
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  14. jareade

    jareade Supporting Member

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    :) In 8K miles in 5 months, I have noticed 0 degradation of the battery. Last week I charged to just under 100% on my S 90D - 295 miles. I had to head out before it finished - adding those last few miles takes significantly longer.
     
  15. Derek Kessler

    Derek Kessler Member

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    Ranged between -20° and 20° F. 40° isn't remotely cold.
     
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  16. Veritas1980

    Veritas1980 Electric Viking

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    Congrats! I'm sure you are going to love it.

    I haven't had mine plugged in regularly for 6 months, and I haven't seen any degradation so far, not compared to new or to other 75's.
     
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  17. Doug_G

    Doug_G Lead Moderator

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    Just did it, no biggie. Lost about 1.5% per day.

    High state of charge at high temperatures is what causes premature degradation. A parked car at medium to low charge is not a risk factor for battery lifetime; in fact it may enhance it slightly.
     
  18. jbcarioca

    jbcarioca Active Member

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    I left mine in my garage for 30-45 days at a time before I finally managed to obtain my Condominium Board approval to install my connection. In total it was about six months. Zero problem, although I charged to 90% before leaving because I never knew how long I would be gone. You'll never have a problem if you figure on 1.5% per day loss and allow enough charge so you can get where you will go with 20% or so remaining prior to charging. That's the conservative way, but it also is the worry-free way.
     
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  19. Solarman004

    Solarman004 Member

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    I agree with everything @Veritas1980 suggested. I would add to the list 1) turn off Smart Preconditioning, 2) don't run a third-party Tesla data monitoring app.
    My 75D only loses 2 miles at most per day, even in cold (30s F) temps.
     
  20. Veritas1980

    Veritas1980 Electric Viking

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    Yes, I knew I forgot something, thank you! I never used the function, maybe that's why it is absent from my brain.

    Also with the third party apps, I use Teslafi, and there it is not a problem with correct settings, but some apps/sites will pull data all the time, not allowing the car to sleep.
     

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