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Old 04-19-2009, 11:53 PM   #117 (permalink)
EV test pilot
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Join Date: Jan 2008
Location: Oconomowoc, WI, USA
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Electric Cycle - '81 Kawasaki KZ440
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There are lots of little DC/DC converters out there you can just BUY.

My motorcycle has a $10 converter I bought from Ebay that converts the motorcycle's 48V drive system down to 12v for the headlight, turn signals, etc.

It would save you the space of the 12V battery in the engine compartment, but since this is a hybrid, it might be better to leave the original battery for the gas engine and alternator to recharge.

On the other hand, completely remove the alternator and 12v battery, and just run all electric off the drive batteries for maximum efficiency!

Even using a DC/DC converter, you would still want at least a small battery in there to smooth out loads being turned on and act as a backup in case of a problem with the converter.
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