I have a Champion 3000w generator that will run the AC and a stand alone 60 amp Boondocker charger that I plug into the generator and then use jumper cables to attach to the battery posts. It charges the battery as efficiently as is possible via a generator. We also have roof and portable solar that is either very helpful or not at all depending on weather and shade. If you charge only with the built in converter/charger, NPS campgrounds don't have long enough generator hours to get the batts fully charged.
