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Technical Problem with Supercharger at Dedham, MA

Discussion in 'New England' started by David29, Jul 15, 2016.

  1. David29

    David29 Member

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    Long story short, I was told by Tesla this AM that there is a known technical issue with one of the chargers at the Dedham, MA Supercharger. I was using Stall #2B, charging started normally, but after a few minutes there was a sharp drop in the charging rate when my battery was barely charged. So I called the telephone number on the charger (same number as roadside assistance) and was told that charger had a known problem. It was suggested that I move over to stall 3A, which I did once it was available. A technician is due to inspect the equipment (no timeline given).

    I had had reduced charge rate at Dedham 3 or 4 times in the past month or so and was beginning to wonder if it was my car. But I was assured it was nothing about my car.

    Unfortunately I did not ask if the technical problem is restricted to stall 2B or if it affects other stalls. Someone pulled in next to me, using stall 2A, and said his charge rate was fine. So it may also be sporadic or it may be limited to that particular stall.

    So if you charge at Dedham, be aware of the possibility that stall 2B, at least, may have a limited charge rate.
     
  2. EdA

    EdA Model S P-2540

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    2B or not 2B watt is the question?
     
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  3. David29

    David29 Member

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    Good one! That gave me a smile...!
     
  4. bigmaple1

    bigmaple1 Member

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    I wonder how Tesla is dealing with electric utiliiy Demand charges. At a supercharger site, with lots of stalls in use, I imagine it would be a real factor in the cost of energy.
     
  5. ItsNotAboutTheMoney

    ItsNotAboutTheMoney Active Member

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    Demand charges are based on peak power. So it's cheaper per kWh delivered to have 24/7 full power than to have heavy peaks and then light use.

    Demand charges are a reason why pricing charging is so challenging.
     
  6. David29

    David29 Member

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    Same reduction in power happened again today, at stall 1B at Dedham. The initial charging rate was over 100 KW, but after a few minutes (when my state of charge was still in the 30% range), the charging rate dropped to about 22 KW.
    So I moved my car over to stall 3B where the charge completed normally.

    I called Tesla and reported the experience.
     
  7. EdA

    EdA Model S P-2540

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    Stick to the A stalls :)
     
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  8. Jurnimon

    Jurnimon Member

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    I saw a cone on Stall 2B the first weekend I had my Tesla (about a couple of weeks ago) since like someone knew there was a problem.
     
  9. David29

    David29 Member

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    There once gain this AM. Had trouble with stall 2A, so I moved to stall 3B and that worked fine even though thre was a car connected to 3A. Called Tesla to report the issue. Noticed that stall 1A is blocked off.
    So I am now leery of stalls 1B, 2A and 2B. All seem to have issues....at least for me.
     
  10. Jurnimon

    Jurnimon Member

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    The X charging from out of town next to me today had a problem with 2A. We had enough charge so we vacated our spot 1B to let take the spot. 1B was working fine. 1A is still blocked with a cone. All stalls that could be used were in use at 6pm.
     
  11. David29

    David29 Member

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    I charged at Dedham yesterday in one of the higher numbered spots -- 3A I think. There was another car plugged in on the other side of 3, but I could not tell if it was charging or not. I got good charge rates the whole time, and temps were in the high 80s. SO I think that reinforces the notion that there is a technical issue with stalls 1 and 2...Too bad they can't be repaired more quickly.
     
  12. Zarwin

    Zarwin Member

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    Oddly this exact same thing happened to me yesterday at the Greenville, SC supercharger. Battery was at ~5% when I plugged in. Ran approximately 2 minutes at ~110kw and then dropped suddenly to damn near exactly 22kw, (I remember seeing 320V 69A on the dash). Moved over one stall to a different pair and ran fine. There must be some mechanism that defaults back down to 22kw. I'll have to go look at which pair it was. Was the third stall from the left and then I moved over to the second from the left.
     
  13. 3mp_kwh

    3mp_kwh Member

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    I've had this issue in Albany, and a couple times at the 2nd to last SC on the right side, at Dedham. Cutting down to ~70a or about 25kw, after 10 mins or so. One of the times the cable was warm/hot.
     
  14. ArtInCT

    ArtInCT Always Learning

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    Dave:
    Inquisitive minds wonder if you EVER charge at home??? Why are you at a local SuperCharger so often?? Perhaps the SuperCharger GeoFencing is trying to "TELL" you something... Nudge Nudge.
     
  15. David29

    David29 Member

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    I charge at the S/C because I live in a condo and have no ability to charge at home -- yet. I thought I had mentioned that early on. But the good news -- to be discussed at length in a separate post soon -- is that I have a charging system installed and inspected and am only waiting for Eversource to install the meter. So, any day now I will be able to charge at home.
    But when I first started noticing this slow charging at Dedham, I called Tesla, at least twice and maybe 3x, and was assured each time it was a technical issue with the chargers and not my car. Given the number of similar posts here and in other forums, I think there is some sort of generic hot weather charging issue affecting the Tesla Supercharger network. But it is possible there is something specific about my car, as well. I have not pursued that in the past couple of weeks because my charging system is done. Thanks.
     
  16. EdA

    EdA Model S P-2540

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    He has no home charging...
     

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