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Charge from low or Mid or high SOC is healthier?!

Discussion in 'Model S: Battery & Charging' started by soooma, Oct 7, 2016.

  1. soooma

    soooma Member

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    I noticed rated range on 90% for my Tesla P90D has dropped from 240 to 238 just after having it for a couple of weeks and all i did differently were 2 things
    1. V8.0 and another small update afterwards
    2. Charge from 10-20% SOC because somehow I remember it'a better to do that than just charge when it's half full

    Correct me if I'm wrong please
     
  2. DarkMatter

    DarkMatter Member

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    The shallower the cycle the more of them the battery will give you. So always charge when you can, don't wait until you are at 10-20%. In other words plug in when you are done driving if there is a plug available, don't wait to charge.
     
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  3. soooma

    soooma Member

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    Mind me asking science behind it?!
     
  4. TexasEV

    TexasEV Well-Known Member

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    Correcting you as you asked. Plug in when you can , and let the battery management system manage the battery
    Remember, a connected Model S is a happy Model S
    A connected Model S is a happy Model S

    Don't sweat it. All cars lose a few mikes if range in the first year, then it slows down. Also realize that the range displayed is an estimate.
     
  5. BerTX

    BerTX Supporting Member

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    The range in miles is a calculation based on battery capacity numbers that are estimated (because measuring them accurately is not practical) and something like EPA estimates, that are pretty nebulous to start with. The calculation can change with firmware updates.

    Worrying about them changing a few miles is like worrying about the difference between a 20% chance of rain and a 30% chance of rain.
     
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  6. DarkMatter

    DarkMatter Member

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    Battery Life and How To Improve It

    There's a nice Depth of Discharge graph part way down that page. This is part of why the Volt only uses between 20 and 80 percent discharge as the whole battery range. It preserves cycle life.
     
  7. soooma

    soooma Member

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    Wow!
    I took it down to 1% last week and was proud of it!! And silly my i was thinking I am improving the battery!!

    Ignorance can be a bliss!!
     
  8. TexasEV

    TexasEV Well-Known Member

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    Have you considered reading the charging section of the owners manual?
     
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  9. soooma

    soooma Member

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    I c where this is going:)
    Short answer no!
    Don't forget more than 50% questions here are probably answered in "Manual"

    Forgive my laziness
    I am no smart enough to get the gist of such a large manual
     

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