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 and becoming a Supporting Member. For more info: Support TMC

Supercharger Curve for SR (downgraded from SR+)

Discussion in 'Model 3: Battery & Charging' started by lateulade, Sep 25, 2019.

  1. Rocky_H

    Rocky_H Well-Known Member

    Joined:
    Feb 19, 2015
    Messages:
    5,264
    Location:
    Boise, ID
    OK, here's a possible reason. People's frequent normal use case for the majority of the car's time has the battery meter near full or in the upper levels most of the time, right? Charging to 90%, right? It goes down when driving it, but gets refilled fairly soon and sits mostly full again for many hours. People don't let the car sit near 0% for long. Now with the unusable locked out portion being at the top, this does effectively put that so-called "90%" on the display down lower, like 80%. Better for the battery, being a little closer to midpoint, but still higher than ideal.

    With your proposal, that would move that usable portion of the battery up higher, because you're leaving more underneath it, so people's normal "90%" marker instead of being truly 80% would be getting more like 86%. So it would be pushing the most frequently used state of charge higher, which isn't really the better thing for the battery.
     
  2. insaneoctane

    insaneoctane Active Member

    Joined:
    Apr 6, 2016
    Messages:
    3,263
    Location:
    Southern California
    Based off your logic, Tesla should have margin at the top and not the bottom of a non locked battery, no?
     
  3. Rocky_H

    Rocky_H Well-Known Member

    Joined:
    Feb 19, 2015
    Messages:
    5,264
    Location:
    Boise, ID
    Huh? They don't have extra "margin" anywhere in a non locked battery, except:

    All of the batteries have the non-accessible "anti-bricking reserve" at the bottom. They have to! If you run a lithium ion battery down to actual 0V with no charge, it is destroyed and can never be recharged again. So that is there to prevent dumb owners from permanently destroying their batteries. The car will shut off before it gets to that point.

    But no, they do not put extra empty margin at the top of a non locked battery, because they are giving access to all of the battery capacity, so they do allow you to fill it all the way full. They just leave warnings not to do that often, like every day.
     

Share This Page

  • About Us

    Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.
  • Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


    SUPPORT TMC