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I read that a Tesla Model S P100D achieved 730 horsepower on a dynamometer. Would increasing battery size increase the horsepower? If not, what would?

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Increasing the battery size would increase the range of the vehicle, not the horsepower. Increasing the mechanical output of the motor would increase horsepower, but reduce range.

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  • $\begingroup$ But there have been improvements in performance with increased battery size. On a dynomometer a p100d has more horsepower than p90d when all that is different is battery pack, @user11068 $\endgroup$
    – SRawes
    Apr 29 '17 at 11:36
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    $\begingroup$ A Tesla battery is made from many cells, there is a max current rating for each cell, a larger battery has more cells and therefore give out a larger peak current. $\endgroup$ Apr 29 '17 at 15:40
  • $\begingroup$ @SRawes That would be a great piece of info to cite in your answer. $\endgroup$
    – Drew_J
    May 16 '17 at 20:00
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A Tesla battery is made from many cells, there is a max current rating for each cell, a larger battery has more cells and therefore give out a larger peak current. (Ian ringrose)

It is also linked to the naximum output of the electric motor. Which produces the rotation.

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    $\begingroup$ This does not answer the question. There is a maximum output of the electric motor. We do not know if the current battery pack can or cannot supply the current to achieve this. $\endgroup$
    – Drew_J
    May 15 '17 at 16:31
  • $\begingroup$ I have edited it, @Drew_J $\endgroup$
    – SRawes
    May 15 '17 at 17:14

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