It sounds as though your converter/charger is not operating - that's what charges your batteries from either shore power or genset. It is usually plugged into a regular 120VAC outlet in the bay, so make sure that outlet has power (e.g. circuit breaker tripped). If that's OK, then likely the converter itself is not functionng. It probably has a fuse on its charging output circuit and that may have blown. Look on the converter itself for the fuse. Last & worst possibility is thatit has failed and will need to be replaced.
I'm assumming your battery disconect switch is in the on position becasue youwould have no 12V power to anything if it were not. No doubt you would have noticed that!
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL