RoyB ... thanks for your thorough explanation of how you dry camp without solar!
We do something similar camping in our small Class C. We idle the main engine and use it's alternator to dump about an hour's worth of heavy current into the 12V AGM batteries and then use a small and very quiet Honda EX650 for another few hours to bring the batteries up some more. We still have only the stock converter in the RV because that is all that's needed with fast charging AGM batteries. I intentionally chose AGM batteries that require a float voltage 13.6 volts so that we could float them and long term charge them using only the stock 13.6 volt converter. This converter is left connected to the batteries almost 24/7 while the RV is in storage between trips.
I've been saying for 6-8 years "we may add solar later" ... but keep putting it off because what we have been doing has worked so well without having to take the time and money to replace the stock converter or add roof solar.
