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UMC charging at no more than 26 amps (instead of 32) in the last couple of days.

Discussion in 'Model S: Battery & Charging' started by hroussel, Jun 13, 2018.

  1. hroussel

    hroussel Member

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    Aug 8, 2017
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    Montreal
    Had anyone experienced something similar? I observed this the first time a week ago when I plugged downtown into a public L2 charger. I could see 26/32 on the display, showing I was not going above 26 amps. I assumed at that point that the L2 charger has some limitations.

    But later, when charging at home through the UMC I also saw 26 amps. Anybody has an idea?
     
  2. hroussel

    hroussel Member

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    Aug 8, 2017
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    Location:
    Montreal
    OK tonight I plugged and got my 32 amps back. There was a system update last night so the whole thing rebooted. Maybe that's all it needed. End of the story.
     
  3. scottm

    scottm Active Member

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    Location:
    Canada
    good that solved it.. I was going to say, make sure you just haven't dialed down the amps on the console to 26, that would limit it as well
     
  4. Rocky_H

    Rocky_H Active Member

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    Boise, ID
    Good that you got that back. If you can dial the amps up in the charging screen on the car, things are still working OK. If it is stuck at something lower, there could be a failure. You said 26, and I went to look up the other thread I was thinking of. If it were stuck at 24, that would make sense as a partial failure of the onboard charger. The new chargers are made up of internal modules of 24A each, which is why they ones in the cars are either 48A (2X) or 72A (3X). So from this thread, the person's charging was stuck at 24A, no matter where the car charged, and it did turn out that they had to replace the onboard charger.
    Suddenly can't charge above 24 amps?
     

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