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Got to see it for the first time ever! Cold Battery Range Loss Blue Bar!!!

Discussion in 'Model S: Battery & Charging' started by islandbayy, Dec 19, 2014.

  1. islandbayy

    islandbayy Active Member

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    #1 islandbayy, Dec 19, 2014
    Last edited by a moderator: Mar 13, 2016

    Got to see it for the first time! Forgot to plug in last night, super cold soaked pack. See video! I have never seen this out in the wild or photos from anyone else vehicle. Thought it didn't actually exist!
     
  2. wycolo

    wycolo Active Member

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    I'm guessing that the blue represents the energy required to be used to heat the batt before any actual charging will take place. So when you plugged in did it work to reduce the blue down to nothing and them begin to add to the brown/green?

    Unfortunately when I died at zero I got none of these graphics (which would have been a waste of energy anyway). But after charging at 120v (very slowly) for a few hours still no such graphics, just the big 0 on the big screen. So I had to 'go for broke' the 5 miles to the SpC as slowly as possible with no indication as to SOC. Since that incident I've only seen the nag screen which comes on below 20 miles with the 'if it gets colder' warning.

    Thanx for the video!
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  3. islandbayy

    islandbayy Active Member

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    The blue represents the battery capacity lost due to cold soaked battery pack. The act of charging the car warms the battery. In my case, low SOC + Overnight Cold Soak as I forgot to plug in for the first time ever @_@
     
  4. wycolo

    wycolo Active Member

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    > The act of charging the car warms the battery. [islandbayy]

    This is true, but I think active warming is used concurrently at these low temps (<20*F). Thus a large amount of the charge energy is being used (sacrificed) to raise batt temperature to allow faster charging to take place. Not much of this has been graphed and analyzed since it requires getting one's car 'into a pickle' first. This is the same pickle that Broder got himself into way back when.
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  5. Alysashley79

    Alysashley79 Member

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    I got this same blue line. I was actually driving the car. It was COLD like 23degreesF and when I hit about 20 rated miles it showed up. Pulled into my garage with 5 rated miles and there was only a tiny blue bar. My understanding is that it shows you how much of what you have remaining the car is going to use to keep the pack warm.
     
  6. invisik

    invisik Member

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    Nice, I was wondering about this just last week.

    I was hoping it would appear not only when the battery is almost empty but at other states of charge to give more of a feel for how much energy is being diverted to heating.

    But that's cool to see it, thanks for the video...

    -m
     

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