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Battery Concerns?

Discussion in 'Model S: Battery & Charging' started by avaghela, Mar 26, 2018.

  1. avaghela

    avaghela Member

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    Feb 12, 2018
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    San Jose
    Hi

    I just took delivery on Fri of a 2013 P85+ - love the ride!

    Before we left Fremont, the car had 205-miles, and over the weekend we drove 90-miles, and now it shows 83-miles left. So is the 32-miles degradation? Comforts like AC was OFF majority of the time.

    Today I'll charge to 90% and see the range.

    Thoughts?
     
  2. boaterva

    boaterva Supporting Member

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    What range scale are you set to, is the first thing to check. This is why people use percent and not miles.. :D
     
  3. avaghela

    avaghela Member

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    When I picked up Tesla charged to 80%, I’ve set to 90% and how charging
     
  4. TexasEV

    TexasEV Well-Known Member

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    The miles displayed on the battery meter is “rated range”, meaning range on the EPA test cycle. It’s not actual miles. Typically you use more “miles” when driving than actual miles. Speed is the biggest factor in this. Search the forum and read the hundreds of posts explaining this. YMMV, just like in gas cars.
     
    • Informative x 1
  5. SSedan

    SSedan Active Member

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    Degradation is if you charge to 100% and it say 255miles instead of 265.

    What you saw was energy use above rated which is expected if enjoying the performance, driving up hills, going fast, temperature extremes ect.
     
  6. Rocky_H

    Rocky_H Well-Known Member

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    Yeah, that's according to the EPA test procedure type of rating, as @TexasEV said. You know that the EPA gas mileage ratings are always a little optimistic. In the perfect weather and when you don't need to do any heating or air conditioning, and when you're not speeding....they can be achieved, but that's kind of rare. Most of the time, you will get a little worse than that.
     
  7. Peter Lucas

    Peter Lucas Member

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    Most likely it is a higher wh/mile than rated. This is analogous to miles per gallon in an ICE car. On the Model S, the rated range assumes 324 wh/mile. While this is achievable, driving fast, lots of hills, lots of AC or heat loads will increase your wh/mile and thus decrease your range.
    Another unlikely possibiity is that you have a battery with less capacity than advertised. The maximum range display does not account for a degraded battery (in my car at least.)
     
  8. avaghela

    avaghela Member

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    Location:
    San Jose
    Thanks for the feedback

    I'm getting 235 @ 90% and 260 @ 100%
     
  9. ucmndd

    ucmndd Well-Known Member

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    California
    No. This is still wrong.
     
    • Informative x 1

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