I'm about to order another converter. I have a Progressive Dynamics 9200 series 60 amp. Question: what would upgrading to a 70 or 80 amp in this series get me?
A CONVERTER AMP rating really has nothing to do with battery charging. The AMP rating is matched to the TOTAL 12 volt amp draw of the RV. The Larger the RV the more 12 volt lights and possibly 12 volt appliances it has. A Larger AMP Converter will usually charge at a higher rate than a smaller, but not that much more. Going to a Higher amp Converter for a few dollars more makes sense. Doug