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Charging beyond set limit

Discussion in 'Model X' started by LukasSwan, Sep 23, 2017.

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  1. LukasSwan

    LukasSwan Member

    Joined:
    Nov 18, 2016
    Messages:
    16
    Location:
    Halifax
    I have my charge limit set to 90%.
    Plugged in my car at 20% and when I came back it was complete and read 93%.
    Any idea why it would charge beyond the limit?
    Also, I went for a short drive and returned to the charger at 91% and plugged in. It didn't pull any current and immediately said charging complete.
     
  2. DrivingRockies

    Joined:
    Aug 21, 2016
    Messages:
    459
    Location:
    US
    I've had it happen before. Usually a one-off... I'm curious as well. Maybe a larger than typical temperature delta when charging? Though I would assume that's all accounted for.
     
  3. vandacca

    vandacca ReActive Member

    Joined:
    Oct 13, 2014
    Messages:
    3,066
    Location:
    Hamilton
    Happened to me once. Maybe it charged to 90%, did a battery "re-alignment" and re-calculated the available charge and came up with slightly more than 90%. These readings (either percentage or miles) are all the results of an algorithm to estimate state of charge from cell voltages.
     
    • Informative x 1

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