Depends on many things
1: Do you plan to run the generator as you drive (if so yes)
And if you have an inverter then:
2: How much battery and how far (That's a math quiz but possibly)
3: how big is the alternator (The bigger the better)
4: And the size and wires connecting the alternator to the house batteries when the engine is running (Also bigger = better)
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times