Amp draw for brushless is a lot lower than brushed. This is because brushed has a dead short depending on commutator position on the brush and brushless does not have this atall. I don't know what the figures are though, as it all depends on so many variables.
I have leant my Lipo cells to a friend running brushed while I was around, so I could see if the benefit was there like I am finiding with brushless, and the result is, yes the Lipo packs are of the same benefit to brushed as they are brushless despite the higher ampage.
Chris
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