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Strange Destination Charger experience

Discussion in 'Model S: Battery & Charging' started by JSergeant, Jul 2, 2018.

  1. JSergeant

    JSergeant Member

    Joined:
    Jul 19, 2014
    Messages:
    549
    Location:
    New Jersey
    I recently upgraded my on board charger to 72 amps in anticipation of a trip to Canada. I'm currently in Nova Scotia, and the upgrade has worked well. I had one session on an 80 amp destination charger which gave me very fast charging.

    However last night I was connect to a 40 amp destination charger at my hotel in Halifax, NS and when I got up this morning, I found that the charging had gone above the 90% level I had set it to (which would normally give me 255 miles of range). The car shows it is charged to 270 miles and the green bar exceeds the 90% white line. However I got a message at about 2:30 am saying charging was completed with battery at 255 miles.

    I have attached iPhone screen shots to illustrate this. I've never seen this happen before.

    IMG_1284.PNG

    IMG_1283.PNG
     
  2. Snowstorm

    Snowstorm Member

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    Dec 8, 2016
    Messages:
    891
    Location:
    Ontario Canada
    I charge at a destination charger at work all the time but I had never seen this. The only time I had greater charger level than limit is when I move the limit down.

    The good thing is that you car does thinkbitbgot more miles, 270 vs 255, so it is not like it just recorded more degradation. Send a email to Tesla and see what they say.
     
  3. LukasSwan

    LukasSwan Member

    Joined:
    Nov 18, 2016
    Messages:
    61
    Location:
    Halifax
    My car has "overcharged" beyond 90% a few times. Usually by 3-4%. I think it is just the vehicle managing it's charge for balancing or SOC purposes. I wouldn't worry about it.
     
  4. LukasSwan

    LukasSwan Member

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    Location:
    Halifax
    Coincidentally. I live in Nova Scotia. So perhaps it just the Maritimes Tesla ghost.
     
    • Funny x 1
  5. JSergeant

    JSergeant Member

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    Location:
    New Jersey
    I was just going to point that out!
    I've been driving and charging Model S for five years all over the US and Canada and this is the first time I've ever seen this.

    I sent a note to Tesla, but haven't heard anything back.

    I had a look at my TeslaFi log, and it shows charging stopped at 2:33am with battery level at 90%, and there was no further charging, so maybe it was just a display/reporting problem.
     
  6. tes-s

    tes-s Member

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    299
    Location:
    CT
    That is what I was thinking. Did you drive today - anything strange with the SOC/miles remaining display? Perhaps a good time to do a reboot?
     
  7. JSergeant

    JSergeant Member

    Joined:
    Jul 19, 2014
    Messages:
    549
    Location:
    New Jersey
    The one thing that indicated that it really did charge above 90% was that regen was limited when I first started driving - the outside temperature was not cold.
     

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