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Charging whilst away for 2 weeks....

Discussion in 'Charging Standards and Infrastructure' started by nowtleft, May 22, 2017.

  1. nowtleft

    nowtleft Member

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    Sorry if covered elsewhere but when going away and not using my S should I leave it plugged in to charger at home or not?
     
  2. dj905

    dj905 Member

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    Yes, leave plugged in to your home charger.
     
  3. Veritas1980

    Veritas1980 Electric Viking

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    Leave it plugged in and set the charger to 50 or 60%, not sure if it makes much difference for two weeks (the setting of low charge level), but then you should be ok.
     
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  4. nowtleft

    nowtleft Member

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    Thanks...I guess being plugged in allows the batteries to do what they need to do if the weather gets very hot or very cold.

    Appreciate the replies:)
     
  5. Craig-Tx

    Craig-Tx Member

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    It also will compensate for vampire loss. Not a major factor over only a couple of weeks, but for long periods, the small losses needed to keep the computer going, etc add up. I've heard stories of people who arrive at the airport with a low charge (but just enough to get them home), but after their trip, the charge is too low to move the vehicle.
     
  6. TexasEV

    TexasEV Well-Known Member

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    Not only is it covered elsewhere in dozens of posts here, but it's in the battery section of the owners manual IN ALL CAPS, so Tesla must think it's important. Why don't owners RTFM any more? When the Model S came out owners were reading and memorizing the manual before their car was delivered.
     
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  7. AudubonB

    AudubonB Mild-mannered Moderator Lord Vetinari*

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    This thread sure went south in a hurry.
     
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  8. Rocky_H

    Rocky_H Active Member

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    Thank you. Some other questions are obscure, but this one sure isn't. It's very specifically covered in the manual. Please give a try checking the manual first before asking.
     
  9. Carl

    Carl Supporting Member

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    #9 Carl, May 22, 2017
    Last edited: May 22, 2017
    Why should the OP check the manual before asking? Isn't this a forum where we help each other? And why does anyone take the time to give the OP a "RTFM" answer in stead of offering a real answer which would take less time :) ?

    Vampire drain, in my experience, can be up to 10-15 km 'typical range' per day, if your car is in the Alps in February, parked outside, and buried in snow. At home in May, under a carport or in a garage, you will perhaps have 4 km to 6 km drain per day. So charge up to 70% or so (not 100% - not good for the battery to fully charge it without driving the car the next day), and don't worry about it for the next two weeks! Either plugged or unplugged, nothing will go wrong during those two weeks.
     
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  10. Rocky_H

    Rocky_H Active Member

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    Because it's the right thing to do.

    Sure, for things that need help and can use some insight from owners, which we would love to provide, not a question that's directly answered in the manual.

    Because this thread shouldn't even exist, and it took five people's time coming in here and reading the topic and posting replies to get to the reminder to just read the answer in the manual.
     
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  11. nowtleft

    nowtleft Member

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    I have read the manual but it does not make this point clear at all. You need and Alka Seltza:)
     
  12. nowtleft

    nowtleft Member

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    ...as always on these forums there are helpful people and some with their head up their own......
     
  13. mattmass

    mattmass Member

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    Don't let the tone of some comments get you down. Of course, reading the car manual is important, but people miss things. Or they want reassurance from those with more experience. Haven't we all been there at one point or another?

    If only there was a manual for interacting with others online...
     
  14. Rocky_H

    Rocky_H Active Member

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    Really? Hmm
    "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."
    page 130
     
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  15. nowtleft

    nowtleft Member

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  16. ggr

    ggr Roadster R80 537, SigS P85 29

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    "A plugged in Tesla is a happy Tesla".
     
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  17. nwdiver

    nwdiver Active Member

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    One thing that's NOT in the manual (as far as I know) is putting a battery tender on the 12v. IMO if you're not going to drive your car for >1 week it's probably worth it.

    You need to attach directly to the 12v posts... the 12v socket turns off when the car is off.
     
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  18. roblab

    roblab Active Member

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    When you get to wait four years for your Sig S, reading the manual is about all there is. And that was after the $40,000 down payment. After we got the car, we were too busy driving to read it.
     
  19. Periokid

    Periokid Member

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    doesn't the car charge the 12v battery on its own?

     
  20. nwdiver

    nwdiver Active Member

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    #20 nwdiver, May 26, 2017
    Last edited: May 26, 2017
    Not very well :(

    Too many threads and posts to count on this subject... here's one of the longer ones...

    Basically the DC-DC converter in the car can't maintain a 'float' so it stops charging at ~14 volts, waits until voltage is <12v then charges the battery up again. This constant cycling destroys the poor little 12v battery. A battery tender will keep the battery at a nice steady ~13v... no cycling.
     
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