As I said, it is a kludge. It will avoid overvolting during the bulk charge, and when the charge rate drops, the voltage will indeed creep back up. Some of that can be "tuned" by the choice of loss. Some by the decision to use the charger/inverter (which is not the sole charging
source!) and simply shut it down once voltage goes too high.
But the kludge will still prevent the worst-case scenario, of "full voltage full power" when the batteries are hungry. Which is why it is a kludge
, not a complete and perfect solution.