Veebyes wrote:
The trick with using so little genny time is having an inverter to run all those little things. 
For drycamping:
We carry a small pure sine wave inverter along but seldom use it, as many of our little things run directly off 12 volts so that we don't have the conversion losses from an inverter. Even our laptop computer, cellular tower Internet access amplifier, and wireless router are powered directly from 12 volts.
In drycamping situations that are not over the top on quietness sensitivity (as is our preference out in the middle of nowhere), we charge our 200 amp hour AGM battery bank about every 3rd day with a little Honda EX650 four-stroke generator that is super quiet and we fire up the Onan built-in generator for air conditioning, the microwave, and the hair dryer.