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Thread: Potential battery pack upgrade for Roadster using Model S cells

  1. #1
    Roadster #1144 + Sig 114 dsm363's Avatar
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    Potential battery pack upgrade for Roadster using Model S cells

    If Tesla offered an upgraded battery pack for the current Roadster using the 3.4A Model S cells (I think I have the correct number), would that also lead to faster acceleration as well as longer range? I think this would be a great upgrade offer from Tesla (even though many people wouldn't take them up on it for a few years until warranties start running out) and provide great, free advertising pushing the range to around 350 miles I think if the number of cells are kept the same.

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    Model S R231 EU widodh's Avatar
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    I think acceleration is limited by the PEM, not the pack?

    In a couple of years we'll start seeing Roadsters who need a new pack. It would indeed be great if they were able give the range a boost!

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    Senior Member W.Petefish's Avatar
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    The acceleration rate is limited by the discharge rate of the cells.

    For example, a 20C rate battery pack will push out more than 36A from a hobby pack. A 40C rate one will push out 72A.

    They could offer 2 options:
    1)Same weight w/ greater range (350 Miles)
    2)Less weight w/ same range (245 Miles)

    I'd like 1 the best.
    If it is worth doing, it is worth OVER doing. - Mythbusters

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    #561 jory's Avatar
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    option #1 please.

    Quote Originally Posted by W.Petefish View Post
    The acceleration rate is limited by the discharge rate of the cells.

    For example, a 20C rate battery pack will push out more than 36A from a hobby pack. A 40C rate one will push out 72A.

    They could offer 2 options:
    1)Same weight w/ greater range (350 Miles)
    2)Less weight w/ same range (245 Miles)

    I'd like 1 the best.

  5. #5
    Senior Member jcstp's Avatar
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    Quote Originally Posted by W.Petefish View Post
    The acceleration rate is limited by the discharge rate of the cells.

    For example, a 20C rate battery pack will push out more than 36A from a hobby pack. A 40C rate one will push out 72A.

    They could offer 2 options:
    1)Same weight w/ greater range (350 Miles)
    2)Less weight w/ same range (245 Miles)

    I'd like 1 the best.
    I guess option 1 will be the easyest to implement! (no change to the suspension)
    The second will implement some R&D, + less cells = lower endurance of the batterypack (note the garantie in Model S depending on batterypack)

  6. #6
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    option #1 so that we can undertake some decent long distance tours and enter Gumball, etc....

  7. #7
    RsEU502,Sp+14274,XpEUSig4
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    yes more range would be great!

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    Roadster #1144 + Sig 114 dsm363's Avatar
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    Would the discharge rate of the Model S 85 kWh pack cells in option 1 increase acceleration while still having more range?

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    Sig 100 - #52 frequencydip's Avatar
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    Quote Originally Posted by W.Petefish View Post
    The acceleration rate is limited by the discharge rate of the cells.

    For example, a 20C rate battery pack will push out more than 36A from a hobby pack. A 40C rate one will push out 72A.

    They could offer 2 options:
    1)Same weight w/ greater range (350 Miles)
    2)Less weight w/ same range (245 Miles)

    I'd like 1 the best.
    What about option 3?
    Same weight, same range w/ faster acceleration (Quarter Mile 11.4)

    I'll take 3...

  10. #10
    Senior Member W.Petefish's Avatar
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    Quote Originally Posted by frequencydip View Post
    What about option 3?
    Same weight, same range w/ faster acceleration (Quarter Mile 11.4)

    I'll take 3...
    Not likely. They'd have to upgrade the motor to do that.
    If it is worth doing, it is worth OVER doing. - Mythbusters

    Debunking Pseudoscience is fun!

    Arctic White Roadster 2.5 #1200, S Sig Performance Vin# 227, HAM: KF5WDB

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