Leece-Neville shows a brushless alternator 170 Amp for $188, reasonable for any 170 Amp. I assume they do this by spinning high strength fixed magnets, like some of the newer electric motors. My concern is, I read someplace that the magnets lose strength over time, which reduces output. And then would have to be replaced. I wonder what kind of time frame that happens in, and what the replacement cost is gonna be.

--johnny