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4kW charging on 120V

Discussion in 'Model S: Battery & Charging' started by Cheburashka, Jan 5, 2020.

  1. Cheburashka

    Cheburashka Active Member

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    Can anyone explain this?

    Car is plugged into 120V receptacle but is charging at 4kW or 3*12A.
     

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  2. Silicon Desert

    Silicon Desert Active Member

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    Sounds like you were expecting something different ?
     
  3. Cheburashka

    Cheburashka Active Member

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    120V receptacle, 12A max. 1.4kW is the theoretical maximum.
     
    • Helpful x 1
  4. eevee-fan

    eevee-fan Active Member

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    119V X 12A is 1.428KW. How is 4KW possible? Are you on 3 phase power?!?
     
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  5. gaswalla

    gaswalla Model S,3,X.. CT with Austin delivery

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    Yes - note the 3 next to 12 amps. You’re on a 3phase output. Where is this? (I’m going to guess an apartment building)
     
  6. Cheburashka

    Cheburashka Active Member

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    If I knew I wouldn't have asked. I have no idea how 4kW is possible. Maybe its a bug in the interface?
     
  7. eevee-fan

    eevee-fan Active Member

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    #7 eevee-fan, Jan 5, 2020
    Last edited: Jan 5, 2020
    • Informative x 1
  8. Cheburashka

    Cheburashka Active Member

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    My garage wall plug. Same one I've always charged the car on.
     
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  9. MN-MS100D

    MN-MS100D Member

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    Bug. Thinks its 3-phase. Just more software issues.
     
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  10. eevee-fan

    eevee-fan Active Member

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    But is the battery really charging at 4KW rate? You can estimate by looking at how fast the pct goes up.
     
  11. BPeter

    BPeter Member

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    Is it just the app saying that? What does the car itself say? I assume that 3 means 3 phase, but would be weird for the app to calculate power instead of just using the power reported by the car.
     
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  12. MN-MS100D

    MN-MS100D Member

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    Its not charging at that rate; if it were, the breaker would trip, or the house would burn down.
     
    • Like x 1
  13. gaswalla

    gaswalla Model S,3,X.. CT with Austin delivery

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    Yeah - software bug. Currently at 65%, set at 70%, and needs over 2 hours to add that 5 percent of range. Not 4kw charging
     
    • Informative x 1
  14. PhxGT

    PhxGT Member

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    I’m getting the same issue, it’s charging at 8mph instead of 4mph on 120v. Also has a “3” next to the amps on the app, it says im getting 7/12a. It charged from 31 to 71 in 5 hours which IS 8mph. I’m not sure if I should trust it or not though. I’ll reset it in the morning and see what happened. We’re in the US so not sure if 3-phase is normal but this started after upgrading to 20.4.1. Anyone else getting this?
     

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