Yes, you absolutely can. If you’re traveling with a big party, or you have a big family, you’re going to go through a lot of power. Buying a few smaller generators along the way can be better than committing to a large-scale purchase, but can also save you in fuel efficiency costs in the long haul, depending on the circumstances and model types.
There are benefits to going with smaller generators: you can use a single one when you solo trip out on the road, cutting down on overall usage, and saving fuel plus money. Also, if one unit runs into mechanical issues, you’re not up the creek without a paddle. You’ve still got your single-use unit to generate electricity for the necessities.