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

Tesla Rage Calculator: Why would turning on AC affect 85D more than 70D?

Discussion in 'Model S: Battery & Charging' started by steinegr, Jul 15, 2015.

  1. steinegr

    steinegr New Member

    Joined:
    Jul 15, 2015
    Messages:
    1
    Location:
    Austria
    According to the official Tesla Range Calculator turning on the AC affects the 85D way more than the 71D.

    At 70 mph, 19" wheels, AC off and an Outside Temperature of 90 degrees 70D's rage is rated at 240 mi, 85D's is 274 mi. 34 mi difference. Turning on the AC brings the difference down to 15 miles (229 to 244).

    Screenshots.

    Range AC on.jpg Range AC off.jpg

    Any ideas why that would be the case?
     
  2. travwill

    travwill Member

    Joined:
    May 1, 2015
    Messages:
    895
    Location:
    Chicago, IL
    Interesting. I'd assume it has something to do with the 70D being more efficient overall. The motors use less voltage/watts by them being restricted but the weight is less as well. So maybe over time that weight of the extra battery/cells in 85D adds up or brings down the 'curve' of capacity versus efficiency a little faster with AC on.
     
  3. RiverBrick

    RiverBrick Active Member

    Joined:
    Mar 23, 2014
    Messages:
    1,365
    Location:
    Québec
    I suspect it's just a bug in the range calculator. If you or an OP can, please change rage to range in the thread title.
     
  4. WarpedOne

    WarpedOne Supreme Premier

    Joined:
    Aug 17, 2006
    Messages:
    2,651
    Location:
    Slovenia, Europe
    That resolves into 205 minutes of driving, 292 Wh/mile and average power of 20.490 W

    That resolves into 235 minutes of driving, 310 Wh/mile and average power of 21.850 W

    70D: 196 minutes of driving, average power of 21.430 W : + 1 kW for AC
    85D: 209 minutes of driving, average power of 24.401 W : + 3.5 kW for AC

    What it boils down to is unknown exact available capacity. It is not 70 and it is not 85, so all above calculations are moot.
     
  5. mattmass

    mattmass Member

    Joined:
    Sep 1, 2014
    Messages:
    119
    Location:
    Boston, MA
    But that's my favorite part :)
     
  6. SabrToothSqrl

    SabrToothSqrl Active Member

    Joined:
    Dec 5, 2014
    Messages:
    1,519
    Location:
    PA
    OMG my Tesla give me SO much RAGE, but you'd have to change the calculator to accept

    "Stuck in traffic"
    "Stuck behind a Subaru"
    "Stuck behind old lady"
    "raining, and I can't power slide without sliding into a tree"
    "Stuck behind a prius"
    "Stuck behind a pickup with an exhaust pipe the size of my junk"

    Then accept a MPH, and 'time stuck' and 'lanes of road'...

    Then you could calculate the rage I feel...
     

Share This Page