A couple of days ago when temperatures here reached 105 in the shade, my wind turbine’s permanent magnet generator was damaged. The magnets were subjected to temperatures (180 degrees or more) such that voltage produced has dropped from thirteen or more to nine or so at the same turbine speed. I have a deep-cycle battery array of four six volt batteries hooked (of course) in series-parallel. I’ll build another generator (I was designing another turbine, anyway) but meanwhile I’m wondering if there is an electrical control device - relay and sensor - that I could use to charge one battery at a time, switching as each battery reaches full charge.
Obviously and with my generator capacity what it now is, I'd like to charge one six volt battery at a time. Is that possible?