seems to me that trying to get to a definitive answer is much like holding water in a sieve or shooting at a moving target. (a very irratically moving target)

and i am not at all convinced that ohm's law is the last word on figuring where the power goes.

considering ohm's law is most useful in purely dc circuits, and somewhat less useful in ac circuits,, the question then becomes

is an AC generator/alternator charging a battery via rectifiers more like a purely dc circuit?   more like an ac circuit?     something in the middle?   or worse ... something in the middle that moves around acting more like a dc circuit at one point in the charging process and then more like an ac circuit at another point?

and is this relationship linear?

seems like a pretty good case for more effort in development of controlled rectification  or some form of switch mode conversion scheme.

there is just so many friggin variables, i can't see how anyone is going to do all th math needed to get a load match between generator and battery that suits a broad spectrum of windspeeds, and the broad spectrum of power that goes into charging a battery.

sincerely,, what am i missing here?