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how long until full 85kW battery goes dead without charging?

Discussion in 'Model S: Battery & Charging' started by Adden Lee, Nov 6, 2013.

  1. Adden Lee

    Adden Lee Member

    Oct 28, 2013
    los angeles
    If I don't drive the car for a few weeks being out of town how long does it take to drain the battery? Will this have any negative consequences on the overall health of the battery?
  2. Lloyd

    Lloyd Well-Known Member

    Jan 12, 2011
    San Luis Obispo, CA
    With the latest software revision, it appears that the car will loose 1 to 2 miles per day. With a full charge that would be many months. Tesla recommends that you leave your car plugged in if you are leaving for an extended period. Any power source will do. The Tesla website and this forum has extensive information and discussions on this topic.
  3. imherkimer

    imherkimer Member

    Mar 23, 2013
    United States
    Leave it plugged into a regular 120v outlet, and it will take care of itself.
    Otherwise the battery will likely be depleted after a couple of weeks. If it does "go dead," the battery will go into a kind of self protecting hibernation state, so you will need to jump the 12v battery to operate anything at all in the car, even to begin charging the main battery. Probably won't end up "bricked," but not a good risk to take, and not good for the overall longevity of the battery. Best is to find a way to leave it plugged in and trickle charging to a standard 80 or 90% charge level.
  4. markb1

    markb1 Active Member

    Feb 17, 2012
    San Diego, CA
    Tesla guarantees the battery won't brick.

    Creating the World's Best Service and Warranty Program | Blog | Tesla Motors

  5. kendallpb

    kendallpb Model S: P 8061

    Oct 29, 2010
    MD, USA
    Keep in mind many people (in the U.S., anyway) are still on version 4.5, though, which doesn't have this improved sleep mode. But as you say...even with it, I'd plug in if leaving for weeks. Heck, I keep it plugged in if I'm gone for a few days.
  6. brianman

    brianman Burrito Founder

    Nov 10, 2011
    Ok, I can't resist since this has been asked before and I remain curious as to the reason.

    Why are people interested in this answer? Is your S an "outdoor car" (no garage) without steady available of a 110V plug? Or do you worry about brownouts "doing bad things to your car"? Or something else?
  7. ACDriveMotor

    ACDriveMotor Member

    Aug 11, 2013
    Seattle, WA
    Long trip and leaving car at airport? I don't expect I will leave my P85 at the airport or Masterpark but I've thought about the question.

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