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NEMA 14-50 charging question

Discussion in 'Model S: Battery & Charging' started by golfski, May 5, 2014.

  1. golfski

    golfski Member

    Joined:
    Apr 17, 2014
    Messages:
    178
    Location:
    Seattle, WA
    I know Supercharging/CHadeMO is a different type (DC) charging than the NEMA 14-50 (AC), but does the charging profile look the same? In other words, does the charging slow down as you get closer to a full-battery?
     
  2. Doug_G

    Doug_G Lead Moderator

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    Apr 2, 2010
    Messages:
    17,200
    Location:
    Ottawa, Canada
    Yes, and the higher the power, the sooner it slows down. The Supercharging web page says the first 80% takes the same amount of time as the last 20%.
     
  3. Zextraterrestrial

    Joined:
    Mar 11, 2010
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    Location:
    Humboldt/Los Altos
    on a 14-50 it doesn't really slow down until 98% or more SOC
     
  4. Cottonwood

    Cottonwood Roadster#433, Model S#S37

    Joined:
    Feb 27, 2009
    Messages:
    5,062
    Location:
    Colorado
    It seems to throttle back to about the same charging power (taking into account that the DC power is about 90% of AC power) vs State of Charge. This is why the last few percent take just as long on a 14-50, an HPWC, or a Supercharger, i.e. FOREVER, if you are waiting.
     

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