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99%? Max charge

Discussion in 'Model S: Battery & Charging' started by Alysashley79, Mar 10, 2015.

  1. Alysashley79

    Alysashley79 Member

    Joined:
    Oct 4, 2013
    Messages:
    646
    Location:
    Seattle, WA
    Is anyone else experiencing that when trying to max charge it only goes to 99%? Sorry if this has been posted elsewhere already. Today was the first time I've max charged in a bit and is the first time it wouldn't go to 100%.
     
  2. paulkva

    paulkva Member

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    Jul 22, 2013
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    565
    Location:
    Falls Church, VA
    Could it have lost a little charge in the time between completion and you returning to the car, or were you watching it the whole time? And what kind of charger were you using? (Home, supercharger, public L1/L2/L3, etc.)

    I charge to 80% overnight and frequently see the battery at ~79% when I get into the car. It's more pronounced when I haven't driven much the day before, because that means charging completes earlier and there's more time for "vampire loss" to kick in.
     
  3. golfski

    golfski Member

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    Apr 17, 2014
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    178
    Location:
    Seattle, WA
    Is the car actually reading 99% using the new "%" instead of miles feature? If so, I have noticed that my car charges to 89% and 79% even though the slider is at 90% and 80% respectively. I think this happens when you are NOT in range mode and have noticed if you are in range mode, it will reflect the percentage correctly. I have noticed VT does this same thing, when charging with Range mode OFF, the rated range shows 90% but the ideal range is showing 89%.
     
  4. Alysashley79

    Alysashley79 Member

    Joined:
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    Location:
    Seattle, WA
    I use the UMC to charge.
    Yes I drive in % mode vs distance now just easier for me. I had the bar all the way to max charge and it had only finished a few minutes before I got in it. It said charging complete and it was at 99%. The max bar wouldn't go higher than 99% either. And when I switched to distance it was off by about 4-5 miles from my normal max charge.
     
  5. befcomet

    befcomet Member

    Joined:
    Mar 22, 2015
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    Location:
    Cleveland, OH
    I max-charged my 60 this weekend, and charging completed at 99%. When I have charging set to end at 80% or 90%, it always stops at 79% or 89%, respectively. It's not a big deal, I guess, but it messes with me -- it's like stopping the gas pump at $9.99 instead of $10.00 even! Ha!
     
  6. apacheguy

    apacheguy Sig 255, VIN 320

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    Oct 21, 2012
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    So Cal
    Weird. Does it go thru the "balancing period" where it holds 240 V at ~3 amps for an hour or so?
     
  7. SabrToothSqrl

    SabrToothSqrl Active Member

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    i know that last 1% takes FOREVER to charge. like seriously at least 1/2 hr if not more.

    I've only had to max a few times for long trips. Usually I rock the 90.
     
  8. Brass Guy

    Brass Guy Member

    Joined:
    Jan 5, 2014
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    505
    Location:
    Stoughton, MA
    I still have mine set to miles rather than %, but my last range charge (about a week ago, UMC) netted 249 rated miles, I left mere minutes after it completed, and miles started coming off as I was driving. (I've read many posts that indicated the miles don't come off for around 5 miles after a range charge.)

    Most interesting was that my regen was restricted to 15kW instead of 0, which used to be the restriction for several miles. I also have not 100% charged for quite some time.
    Anybody else notice the regen too? That would seem to happen at about 99%.
     
  9. Todd Burch

    Todd Burch Electron Pilot

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    Nov 3, 2009
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    Location:
    Smithfield, VA
    The 99% thing is not unusual. I saw it on my older S. If I told you the actual value is 99.999% and they're just rounding down, would it make you feel better? :).
     
  10. befcomet

    befcomet Member

    Joined:
    Mar 22, 2015
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    26
    Location:
    Cleveland, OH
    lol no. But good try!! I totally need that extra 0.001% on my teeny tiny 60kWh battery. :biggrin:
     

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