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Anomalous charging rate reporting

Discussion in 'Model S: Battery & Charging' started by billarnett, Mar 10, 2015.

  1. billarnett

    billarnett Member

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    Nov 15, 2008
    Messages:
    295
    Location:
    Emerald Hills CA
    As I was finishing my charge at the Fremont Supercharger today I noticed that it kept going for a while after reaching 100%, though of course at a very slow rate. But the charging rate display was weird:

    IMG_3411.jpg

    I didn't believe that it was really charging at 131 mi/hr so I switched the units to "Energy":

    IMG_3410.jpg

    Now it correctly shows 8kW which is more like 25 mi/hr. Where did that 131 come from? Anyone else seen anything like this?
     
  2. Cottonwood

    Cottonwood Roadster#433, Model S#S37

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    5,074
    Location:
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    The mph charging rate is the average for the charging session and the kW is instantaneous.
     
  3. Kalud

    Kalud Active Member

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    Montreal, QC
    ... and the last portion of the charge once at 100% is pack balancing and can last for 30-60min at low Amps. If you're ready to go there is no need to wait anymore you won't gain anymore noticeable range.
     
  4. andrewket

    andrewket Well-Known Member

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    This.
     
  5. AndreyATC

    AndreyATC Member

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    Location:
    New City NY, USA
    Anyone knows what the charging rate is for the last 20 miles before 100%?
     
  6. David99

    David99 Active Member

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    Brea, Orange County
    It goes down gradually, it doesn't stay at a fixed rate. It's been a while that I did a 100% charge at a Supercharger and I didn't keep track exactly what the rate was at any given state of charge. There are some videos on Youtube where people filmed the entire time of charging at a Supercharger. It's about as interesting as watching paint dry, but you could find one of these and scroll forward to the last 20 miles and see what the rate is :)
     
  7. billarnett

    billarnett Member

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    Location:
    Emerald Hills CA
    It that something that should be done now to keep it balanced? What does that mean, anyway?
     

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