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  1. #1
    Banned.
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    Speed Controller and Battery Question

    Hi there, can somebody please explain to me what is the purpose of a speed controller? Why are there so many options? Are speed controllers specifically meant for a certain voltage only? Do some increase the efficiency of the entire e-bike through smarter circuitry?

    As for batteries, what does the voltage determine and what does the amperage determine? I see people have setups of... say... 24v with 10amp, or 24v with 20amp, what's the difference?

    Thanks!

  2. #2
    Not A Senior Member WJChris's Avatar
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    May 2008
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    2007 Jamis Dakar
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    More voltage means more speed, more amps (amp-hours) means further distance (more storage capacity) at the same voltage.

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