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Wh usages?

Discussion in 'Model S: Battery & Charging' started by gvands, Mar 18, 2015.

  1. gvands

    gvands Member

    Joined:
    Feb 23, 2015
    Messages:
    85
    Location:
    zoersel, belgium
    Hi all,

    Yesterday I confirmed my order for an all black P85D and now I'm on the waiting bench.
    I've been reading alot on this forum and I found that driving a tesla means doing math alot, wich I like.
    Who can help me with some numbers? I know all is relative with height and temp etc, well, I live in a
    nearly flat part of the country and temps are moderate during winter and not too hot during summer.
    In the winter, there aren't too many days we go below 30°f and during the summer temps mostly stay
    between 68 and 75°F with an average between 64 and 68 during summer.
    I would like to know the "average" usage at different speeds so I can keep myself happy calculating
    Wh usage with my driving style.
    What I would like are the wh at these speeds : 30-37-45-50-55-65-75-80-90 mph in close to similar conditions like mine.
    This way I might be able to give myself some numbers that could help ease my fear for range anxiety wich is slowly growing when I try to think of my current driving style but then in the P85D
    I drive a challenger srt8 at the moment and it's going away to make room for the tesla, so a 180° turn.
    But at this moment, I still love to drive the challenger, I love to go fast when "safety" permits and I love to pull up fast whenever I have the chance. I own this car for 5 years and it's always been this way, so I'm sure it's not going to be all that different when I step into that electric demon....I just would like to know if it could get at least 160 miles of range with an 80% charged battery when I drive it like I stole it, because that's what I'm intended to do..
     
  2. benjiejr

    benjiejr Technogeekextraordinaire

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    Nov 20, 2014
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    Location:
    San Antonio, Texas
    My quick guess is you'll be in the high 400s, maybe even low 500s and at 80% SOC you might get 150 miles if you're lucky.
     
  3. gvands

    gvands Member

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    Location:
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    95% of my driving is during daytime so for the biggest part I don't go much over the speedlimit, but it's those where nobody is on the road,
    I'm at this moment still not sure if I'm going to do much of those things in the Tesla because a big part of the fun now is the roar you hear and
    feel in your back when you floor it, so with no sound in the Tesla, it might just not thrill me in the same way, on the other hand, the
    extra hp could help me forget about that sound in no time.
    I have to do a 130 mile trip twice a week (ok, for you US people, this sounds like nothing, but when you live in a country that's smaller than almost
    every state in the US, this is a rather large commute.) and this is during semi heavy traffic so I guess I'll make it every time with plenty to spare

    *edit* I also want to drive to spain with the Tesla, trough the sc route, but I'm going to get the P85D by the end of june if all goes well, so this means only a few days of playtime with the car. I'm not going to have enough confidence to drive it that far so early on. and I'm afraid that because it's so new it will be very hard to drive it conservative for +200 miles from sc to sc.
     
  4. redox

    redox Member

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    Sep 13, 2014
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    Location:
    SF Bay Area
    I doubt it. Play with https://evtripplanner.com to get some idea. Only you know what speed multiplier to use to describe your "like I stole it" driving style.
     
  5. FlasherZ

    FlasherZ Sig Model S + Sig Model X + Model 3 Resv

    Joined:
    Jun 21, 2012
    Messages:
    7,019
    It really depends on what things are like on common drives. I live 1.7 mi from the state highway, where it is nearly impossible to get less than 400 Wh/mi because of turns and hills and other features. This makes short trips into town come out with a high average (mine is 355 Wh/mi over 45,000 miles; typically I average 320 Wh/mi at > 50 degF and about 380 Wh/mi in winter). I tend to be a more aggressive driver when it comes to acceleration, so that's figured in for me.
     
  6. gvands

    gvands Member

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    how does that speed multiplier work? Is it 1.2 = 70mph + 20% = 84mph?
    It also says that the p85d is in beta, so how reliable is it?
    With payload, it's set at 200lbs, is this for extra stuff you carry or is it set passengers?
     
  7. benjiejr

    benjiejr Technogeekextraordinaire

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    If that 130 mile trip is mostly highway and you stay around the speed limit then torque sleep will help you out. For reference, I drive mostly at or just above the speed limit (and sometimes drive spiritedly when I feel it's safe) and I think I average about 190 miles on 90% SOC. If I take it easy, I can do much better; on a road trip this weekend I took it easy and probably got about 250 miles on 100% SOC.
     
  8. gvands

    gvands Member

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    Location:
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    when you say "take it easy" is that driving at speed limit or way below?
    Because for 200+ mile trips I fear this the most, having this awesome car that you
    have to drive 20% under the speed limit all the time.
     
  9. benjiejr

    benjiejr Technogeekextraordinaire

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    Driving at speed limit. I just can't drive below speed limit!
     
  10. dirkhh

    dirkhh Middle-aged Member

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    Location:
    Portland, OR, USA
    You have around 75kWh usable. Driving 120km/h/75mph (that's the highest speedlimit in Belgium, IIRC) you should average around 360-380Wh/mile at the most, so 200 miles seem doable (but may require a 100% charge).
    Looking at the current supercharger map of Europe I'm somewhat optimistic that on most drives > 300km/190miles you should be able to route past a supercharger or at least a CHAdeMO...
    So I don't think you'll need to drive below the speed limit under normal circumstances...
     
  11. markb1

    markb1 Active Member

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    San Diego, CA

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