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

Minor adventure this weekend (trip to KC)

Discussion in 'Model S: Battery & Charging' started by efusco, Jun 17, 2013.

  1. efusco

    efusco Moderator - Model S & X forums

    Joined:
    Mar 29, 2009
    Messages:
    4,585
    Location:
    Nixa, Missouri, United States
    #1 efusco, Jun 17, 2013
    Last edited: Jun 17, 2013
    This weekend I made my 3rd trip to Kansas City in as many months, it is around 190 miles 1-way from my home in Nixa. Thus, it is very easy to make the drive one way, but getting home requires at least several hours of charging. The first time I did the trip I was able to turn around in 6.5 hours on a public 30amp J1772 charger, but had been very energy efficient on the way up and pretty darn good on the way back.

    The second trip was also fairly benign, the drive home was from a little further North, in Liberty, MO, but still presented no challenges as I'd gotten a Max range charge at the hotel I stayed at (Courtyard by Marriott at Briarcliff).

    This weekend was a bit more challenging. We were in Olathe/Overland Park, KS area. Driving up was no issue, we stayed at a hotel in the Park Place shopping area called Aloft and there was free parking in the adjacent garage with 2 ChargePoint chargers. So, once again, got a max charge overnight. We drove to my son's track meet with around 252 rated miles still showing..all seemed well.

    But the weather turned bad on us, the meet was called off a bit early and we had to drive to our lake house (~212 miles on NAV) in the rain then whole way. Where previously I'd averaged, at worst, ~330Wh/mi on the drive South, the rain was brutal and dropped us to ~360Wh/mi despite dropping to 5mph below the posted 70MPH speed limit. It didn't take long to realize that there was not much chance we'd make it to our destination without a top-up. Fortunately, I have a friend in Joplin who has a NEMA 6-50 in his garage and he was home and happy for us to stop by to top up.

    We arrived at his house with about 70 miles rated and about 72 actual miles to go. We plugged in, confirmed charging, went inside to eat and chat for an hour expecting to get about 30 miles of range...more than enough to get me where I was going. Oddly, despite still showing charging at 39amps, we'd gotten up to only 83 miles rated?! Don't know how to explain that since I confirmed charging before and after. 3G was essentially non-existant so I couldn't check with the app while in the house. Still, 83 was enough so off we went.
    *Side note, I did pass a truck load of brand new Model S's on I-44 heading toward St.Louis!

    Near my lake house a neighbor has a 50 amp outlet that I'd previously looked at, didn't know exactly what type outlet it was, but didn't think it would be an issue since I have a bag full of adapters I carry when traveling. I made plans to have my wife pick me up at his place so I could charge right away. We arrived with 8 miles rated showing. Turns out, he has an old style NEMA 10-50 outlet! None of my adapters fit...ugh. (subsequently found one here that I will be adding to my collection: EVSEadapters.com: Tesla Model S adapters - charge your Tesla Model S faster, anywhere ).

    Plan B was my father in law's 30 amp dryer outlet (which was an ordeal that I won't describe). Pulling 24 amps I still wasn't much over 200 miles rated by the time I retrieved the car the next morning...but it was enough.

    Next weekend I'm installing a NEMA 14-50 at my lake house (long overdue).

    Lessons Learned:
    1)Charging infrastructure in Missouri and Arkansas areas are not adequate for the average driver and will hold back significant EV sales until improved--the distances and roads are not conducive, even with the Tesla 85kWh battery to the average person's ability to travel at will to the primary cities and destinations in the state without extensive planning.
    2)Level 2 charging is a bit of a joke....nice for hotels where you're staying overnight. Nice if you're a commuter and just grab opportunity charges here and there. Wholly inadequate for "real" charging.
    3)Rain is a killer for energy efficiency. Even with 2 prior trips on that route and some speed reduction my range was hammered. Plan accordingly. Much like Broder with the cold, if you don't anticipate and you live in an area with little more than hay fields between your major destinations you could get in trouble.
     
  2. JohnQ

    JohnQ Active Member

    Joined:
    Jan 1, 2012
    Messages:
    1,585
    Location:
    Redding, CT
    Sorry for the challenges and glad it worked out in the the end. Rain is indeed a killer.

    I presume you mean 330 and 360 Wh/mi?
     
  3. fastcars

    fastcars Member

    Joined:
    Jun 13, 2013
    Messages:
    91
    Location:
    cars
    Good to know the real world experience compare to presentation on battery range.

    Hope they install more supercharger in city not only around the highway (if you are traveling interstate).

    Also what happens you are stuck in traffic (usually the case in city) and don't know many friends or find outlet (apps are available but still not enough locations on map)
     
  4. efusco

    efusco Moderator - Model S & X forums

    Joined:
    Mar 29, 2009
    Messages:
    4,585
    Location:
    Nixa, Missouri, United States
    yep, will edit. I have seen 280 on my best drive, but 360 was this weekend's number.
     
  5. strider

    strider Active Member

    Joined:
    Oct 20, 2010
    Messages:
    2,918
    Location:
    NE Oklahoma
    Well, unless it's bitterly cold and you're truly stuck (ie not moving) for a long time, traffic will actually help as your energy use will go down. In general if it looks like you're not going to make your destination you should slow down. The car will do over 400 miles at 35-mph. So if you're stuck in 35mph traffic your range will be quite good :)
     
  6. efusco

    efusco Moderator - Model S & X forums

    Joined:
    Mar 29, 2009
    Messages:
    4,585
    Location:
    Nixa, Missouri, United States
    I disagree with this...traffic is terrible and I was expriencing 500+Wh/mi numbers due to an accident at the start of the trip described in the scenario. Not moving, but using AC, then getting 5000lbs moving for a short distance only to stop again is very energy inefficient thanks to static friction and conservation of momentum issues. If it's slow steady traffic at 35mph without the stopping/starting, then yea, you'll do great...no city or country I've driven in has traffic ever been like that.
     
  7. strider

    strider Active Member

    Joined:
    Oct 20, 2010
    Messages:
    2,918
    Location:
    NE Oklahoma
    Well, that's the problem with a word like "traffic". It can mean thousands of different things. Just this weekend I was heading back into town and 4 lanes of vehicles crept along between 35 and 45 miles for over 10 miles before passing some construction and it opened up. Never came to a complete stop but I would call it traffic. I've also been stuck in the mountains due to a jack-knifed semi where we sat for over an hour waiting for tow trucks.
     
  8. Mayhemm

    Mayhemm Model S P85+ "Lola"

    Joined:
    Nov 9, 2012
    Messages:
    1,939
    Location:
    Saskatchewan, Canada
    #8 Mayhemm, Jun 18, 2013
    Last edited: Jun 18, 2013
    *Sigh*

    Sounds just like home.

    Hopefully, Sun Country Highway will do something about it by next year (when I get my Model S).
     
  9. zdre

    zdre 40kWh Model S P6415

    Joined:
    Jan 18, 2010
    Messages:
    268
    Location:
    St. Louis
    In very heavy rain, I would be driving at 55mph instead of 65mph for both range and safety. Rain increases drag significantly, so even small reductions in speed help efficiency.
     
  10. efusco

    efusco Moderator - Model S & X forums

    Joined:
    Mar 29, 2009
    Messages:
    4,585
    Location:
    Nixa, Missouri, United States
    Certainly during the more torrential bouts I slowed further, but most of the time it was just steady downpour and there's a danger in driving too far below the average rate of traffic as well. 55 might have gotten me to my destination, I don't known...
     
  11. William13

    William13 Member

    Joined:
    Mar 19, 2011
    Messages:
    943
    Location:
    South Bend
    I feel for you. My trips can become a problem in cold, rain, and snow. It is hard to slow down, but it works. Always have a Plan B. that is why I have a HPWC. I try to make sure I could drive to Plan B location if needed.

    I hope that MO coverage improves soon for you. It is thin here in IN too.
     

Share This Page