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How old are oldest Roadsters and how much battery capacity loss in % they experience

Discussion in 'Roadster: Technical' started by nolngrgrsngslde, Oct 13, 2015.

  1. nolngrgrsngslde

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    Guys
    Trying to gauge the life expectancy of a Tesla battery. I have a 2012 S85 with 57k miles and i have seen about 5% degradation over 3 years.

    I am wondering how old is the oldest roadster?

    What capacity degradation do these older roadsters experience with mileage/time?

    If you don't feel like claculation the % degradation just mention how many rated miles at 90% or 100% and at what age?

    Thanks.
    If a thread exists on this subject, please point it out.
     
  2. wiztecy

    wiztecy Active Member

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    This is not an equal comparison. For one, your talking about a 53 kw pack vs an 85 kw pack. Larger kw typically means less stress on each individual cell. Second, there are charging variables, supercharging on the S where none on the Roadster. Lastly and most importantly they're running two different battery chemistries, so your data is not useful in terms of a side by side comparison to judge your Model-S's lifespan unless your just trying to make a generalization with Lithium Ion batteries.

    You can also look at the Roadster survey if you're just curious about the Roadster side of things:

    Plug In America Tesla Roadster Survey
     
  3. dhrivnak

    dhrivnak Active Member

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    I would look at the Roadster Battery Study Plug In America

    So I am down 11% after 6.5 years and 33,000 miles, and hopefully Tesla will offer a battery upgrade for us first generation Roadster owners.
     
  4. nolngrgrsngslde

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    Thanks guys for the links.

    I was looking for a generalization. I was interested in the roadster because of the number of years they have been out.

    I am also trying to figure out whether time has a greater effect on the battery than mileage (or charge cycles).
     
  5. wiztecy

    wiztecy Active Member

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    Mileage and range mode charges as well as depth of discharge (low SOC) tend to be the usual characteristics that have the greatest wear that affect on the battery. Since the Model-S has better/updated chemistry and a larger capacity it should do quite a bit better than the original Roadster packs as you already see with yours.
     
  6. TEG

    TEG TMC Moderator

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  7. wiztecy

    wiztecy Active Member

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    I like your title name by the way. Go Roarsters!!!
     
  8. ecarfan

    ecarfan Well-Known Member

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    How old are oldest roarsters and how much battery capacity loss in % they exp...

    I am not sure what you mean by "a generalization". The Plug in America report will give you real data and should answer your questions. Battery age, vehicle mileage, and charge cycles all impact battery degradation. If you don't want to read the entire report, skip to the Conclusions section on page 14 of this PDF:
    http://www.pluginamerica.org/surveys/batteries/tesla-roadster/PIA-Roadster-Battery-Study.pdf
    As others have pointed out, you cannot compare the Roadster battery to the S/X battery, they are very different in multiple ways.
     
  9. Doug_G

    Doug_G Lead Moderator

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    The cars are far too quite to be "roaring". I changed it to "Roadsters". Since we just had Thanksgiving up here in Canada, I was tempted to change it to "Roasters".
     
  10. AEdennis

    AEdennis Active Member

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    We just had my wife's Sig #40 in for annual and at 110V it range charged to 235. However, in range mode 240V/40A that's usually around 224 miles. In standard mode 240V/40A it's usually between 175-178...

    CAC is 146.85.

    We picked it up close to 2200 miles and it's closer to 19,000 miles now.
     
  11. Ben W

    Ben W P85 #61, Roadster #108

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    My 2008 Roadster (#108) is at 33k miles, and in Range mode now it typically charges to about 223mi. It gets closer to 176 in standard mode on a 70a HPC, though on the 110v mobile connector it often tops up to 185 or so.
     
  12. AEdennis

    AEdennis Active Member

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    Just did my latest update to my entries into @tomsax Plug in america battery study and wrote a blog post (and article on Teslarati) to get remind folks to participate on Roadster, S, and eventually X (when Tom get's that out there.)

    Remember to keep contributing your stats.
     
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