TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

Overloaded superchargers

Discussion in 'North America' started by Gregsbeach, Aug 4, 2014.

  1. Gregsbeach

    Gregsbeach Member

    Joined:
    Jan 10, 2014
    Messages:
    61
    Location:
    San Diego CA
    I was coming home last Sunday night, and tried to charge at the Tejon Supercharger. ALL chargers were full and one Tesla was waiting. When I got in, you can see that I was charging at an embarassing 49 miles/hour.....46 A and 361V....see picture!

    This changes the lifestyle choice of owning a Tesla and trying to use it for long distance travel....not a great choice trying to get home after the weekend. If anyone from TESLA monitors this, I hope they note that adding underpowered capacity in the number of stalls to a site doesn't help if you slow the charging rate down. Then the stalls all stay full and we get stranded.....
     

    Attached Files:

  2. GoBlue88

    GoBlue88 Member

    Joined:
    Apr 1, 2014
    Messages:
    638
    Location:
    San Diego area
  3. PaulusdB

    PaulusdB Mayor Gnomus Vintage Limb

    Joined:
    Jul 12, 2013
    Messages:
    3,094
    Location:
    Europe
    Please read up a bit on how the supercharging process works at full occupancy.
    (You basically share one charger with two cars, where the one arriving first gets a max of 90 kW, leaving a lot less for number two to arrive.)
     
  4. Zextraterrestrial

    Joined:
    Mar 11, 2010
    Messages:
    3,636
    Location:
    Humboldt/Los Altos

    ***
    If you can figure out which car was charging first on a pair you can tap the SC handle of that car and take priority over them so you will get more than 30kW and they will be limited to 30kW
    which they will be limited to after 30-40 min regardless
    ***

    this is very useful and I have never seen or heard this from anyone else
     
  5. ggr

    ggr Roadster R80 537, SigS P85 29

    Joined:
    Mar 24, 2011
    Messages:
    2,473
    Friday afternoon at about 4pm, Hawthorne was full (all 8 bays). Saturday afternoon at about 4pm, San Juan Capistrano was filled up by me arriving, and another Model S we saw on the freeway, who took a sub-optimal route, had to wait. In both cases the waits were short, but a Tesla employee at Hawthorne mentioned that 4 out of 8 of them there were down for a while earlier in the week!
     
  6. TexasEV

    TexasEV Active Member

    Joined:
    Jun 5, 2013
    Messages:
    3,772
    Location:
    Austin, TX
    Probably just bad timing if a car in a paired stall had started charging immediatley before you did. That's not likely to happen often. Did the rate increase as the paired car who was there before you was getting full?
     
  7. Gregsbeach

    Gregsbeach Member

    Joined:
    Jan 10, 2014
    Messages:
    61
    Location:
    San Diego CA
    I have read up on how the supercharging process works at full capacity. I was NOT aware that it would be so slow that it might take several hours to charge. Seeing EVERY stall occupied and only being able to charge at the rate of a home wall charger was more than a little depressing.....This WILL change my future trip/travel plans going forward.
     
  8. aaron0k

    aaron0k Member

    Joined:
    Apr 1, 2013
    Messages:
    147
    Location:
    Walnut, CA
    Headlines from last week "Tesla Ready to Pump Out 100000 Cars Per Year by 2015". At that rate, do you think we'll see the first EV fist fight at a Tesla SuperCharger before 2015?

    SuperCharging doesn't scale... they knew it wouldn't from the beginning.


    Hopefully next months headline will be "First Super Swapping Station opens in..."
     
  9. Gregsbeach

    Gregsbeach Member

    Joined:
    Jan 10, 2014
    Messages:
    61
    Location:
    San Diego CA
    It never increased....I was in that stall for maybe 15 minutes.....got less than 9 miles of charge for that.....but when the Tesla car charging at the left end of the supercharging station left, I immediately took that end spot and was eventually able to get up to 90 miles per hour of charge.
    I just got enough to make it home and left.
     
  10. brianman

    brianman Burrito Founder

    Joined:
    Nov 10, 2011
    Messages:
    15,487
    Probably because it's a jerk maneuver that some of us would never do, and wouldn't want to advertise.
     
  11. rlang59

    rlang59 Member

    Joined:
    Feb 27, 2013
    Messages:
    923
    Location:
    US
    I was thinking the same thing when I saw that post.
     
  12. AudubonB

    AudubonB Mild-mannered Moderator Lord Vetinari*

    Joined:
    Mar 24, 2013
    Messages:
    4,221
    Location:
    Denali Highway, Alaska
    And that's precisely the appropriate action that one should take when a Supercharger site is full, isn't it?
     
  13. apacheguy

    apacheguy Sig 255, VIN 320

    Joined:
    Oct 21, 2012
    Messages:
    3,705
    Location:
    So Cal
    Yep, the reliability at Tejon is awful. One time they were at reduced electrical capacity even though there were only two of us charging. I have also had the charging session stop prematurely on two separate occasions.
     
  14. Lloyd

    Lloyd Active Member

    Joined:
    Jan 12, 2011
    Messages:
    4,885
    Location:
    San Luis Obispo, CA
    It's been really warm also. The cars and charging equipment may have been limited by their ability to cool.
     
  15. ecarfan

    ecarfan Well-Known Member

    Joined:
    Sep 21, 2013
    Messages:
    10,326
    Location:
    San Mateo, CA
    What? I don't think that is true.
     
  16. ecarfan

    ecarfan Well-Known Member

    Joined:
    Sep 21, 2013
    Messages:
    10,326
    Location:
    San Mateo, CA
    That is not accurate. In fact Elon said in the earnings call that by the end of 2015 they will be producing cars at the rate of 100,000/year.

    Not the same thing.
     
  17. TexasEV

    TexasEV Active Member

    Joined:
    Jun 5, 2013
    Messages:
    3,772
    Location:
    Austin, TX
    Then that charging station was broken and you should report it to Tesla. It should never take several hours to charge.
     
  18. flashflood

    flashflood Member

    Joined:
    Jul 1, 2014
    Messages:
    397
    Location:
    Los Altos Hills, CA
    It depends on location. The closest SC to me is at the mothership in Fremont. It only has 8 stalls and I have never seen it less than 6/8 full. I have never gotten anywhere near the advertised rate of charge.

    - - - Updated - - -

    Indeed, that is the courteous thing to do. But the whole point of this thread is that the actual SC experience is a lot less wonderful than the advertised experience. SuperCharging is marketed as a plentiful, free-for-life thing that will fill the tank in 30 minutes. The free part is certainly true. Plentiful is not true today, and if anything will become less true over time: they are ramping up vehicle production a lot faster than SC deployments. And if a 30 minute charge is only possible when the SC is half-occupied, they shouldn't claim 30 minutes. That's like estimating your daily commute as the fastest time you've ever done it, off hours, in zero traffic.

    Don't get me wrong. Tesla is not just making a new car, they are making a new economy, with new infrastructure and new paradigms. I give them 11 out of 10 for execution. But sometimes they talk like it's 15 out of 10, and it makes me wonder whether they're really aware of the gaps in the ownership experience.
     
  19. napabill

    napabill Active Member

    Joined:
    Apr 30, 2009
    Messages:
    1,324
    Location:
    Napa, California, United States
    When doing a road trip, planning is paramount. This is no different than in an ICE. Trying to drive on Friday afternoon, or Sunday afternoon will always be a problem. I know traveling to/from Tahoe you never drive during those times as it is virtually gridlock on the interstate, charging not even considered. But with planning, I've never had an issue and I've traveled virtually all of the Supercharger routes in the west. Avoiding Friday's and Sunday's is the ticket, especially in the summer months.
     
  20. TexasEV

    TexasEV Active Member

    Joined:
    Jun 5, 2013
    Messages:
    3,772
    Location:
    Austin, TX
    #20 TexasEV, Aug 4, 2014
    Last edited: Aug 4, 2014
    No one has ever claimed supercharging will "fill the tank" in 30 minutes. Tesla claims 50% charge in "as little as" 20 min. and 80% charge in 40 minutes. What some people don't realize is those percentages are the end charge state, not adding 50% or 80% of charge to wherever they're starting from. In other words those rates are from starting near empty and would usually be sufficient to get you to the next supercharger, or to home where the bulk of your charging should occur. If people would learn to get out of the gas station "fill 'er up" mode, it would free up lots of supercharger spots earlier and cut down on wait times.

    In fact the web page on supercharging recommends against trying to "fill the tank":
    Charging the final 20% takes approximately the same amount of time as the first 80% due to a necessary decrease in charging current to help top-off cells.

    As most charging is done overnight at home, ramping up production faster than supercharger deployment does not mean supercharger access will become less plentiful. There are outliers like Silicon Valley where the demand may never be satisfied, but many supercharger sites have tremendous capacity for growth in usage. I used the superchargers at Columbus and Huntsville TX this weekend-- once I was the only car charging and the other time there was one car that left while I was there. I've charged at Waco several times this year and there were never more than 3 cars charging out of 8 stalls, which left while I was there. There is lots of excess capacity in the network with the exception of the few known bottlenecks.
     

Share This Page