The generators are like the Toolbox's self-regenerating, the generator has an alternator, battery, inverter, and if you like a solar panel to help charge the battery.
When the generator is running you get Ac power to use for what you need, it also run's the alternator that's banking the battery for power, that can be used at a later time while the generator is not running. The battery and inverter will give you AC-DC power with out using any gas. It cut the gas cost in half or less. See generator on
next page! Click video Link 1.