On Wed, Sep 21, 2011 at 07:30:28PM -0000, Kellan wrote:
> Hi,
>
> I have a 48V 15ah lithium ion (LiFePO4)battery that I use for an electric bike I built. I would also like to use it to power a small boat, possibly my CLC Mill Creek 16.5 open cockpit kayak. The simplest thing for starters would be to use a stock trolling motor. Will I need to step the voltage down to 12V? Can I do that with just a resistor? If so, how do I determine what resistor to use.
You could just buy a 48V trolling motor; there's a number of them
available, e.g. Minn Kota sells a few different ones. You really don't
want to use a resistor, since you'd be dissipating (read "wasting")
battery power across it instead of using it to drive your boat - not a
winning strategy.
--
Ben Okopnik
-=-=-=-=-=-
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