Originally Posted by TGR
I doubt if your scheme to disconnect the battery and charge it with an external small battery charger will cause any harm but I can't envision a normal situation where your converter wouldn't charge your batteries faster than the external 12 to 15-amp battery charger and do it without the hassle of messing with a battery charger.
Standard WFCO converters supply between 45 and 100 amps of power, depending on the model, to charge your battery and run any 12-volt needs of your RV.
Thanks, I'm trying to figure out what my WFCO will do. My battery was down to 70% or 2.6 volts and the WFCO only put out 1.3 amps when charged it. I agree that's the best way if the charger will put out some decent amps/ voltage.