Or do it the easy way...
Apply 14.8 volts @ 20C right off the bat (lots of amperage) and leave it at 14.8 volts until all cells are lightly bubbling then reduce amperage. This is not equalizing it is the most efficient protocol when utilizing a generator for charging.
Manufacturers love to quote C-rates. They have to quote something even if it's entirely stupid and inappropriate. Their prime directive is to offer a perfumed recipe that allows their product to last as long as possible when maintained under darned near laboratory float conditions. The minute a customer yells "GENERATOR RECHARGE!" at them they get a profound case of the stupids.
I'll bet the VAST, a stupendous percentage majority of RV batteries do not reach two hundred cycles before being rowed across the Pb River Styx.
