Companion equipment
EcoFlow Smart Generator 3000 (Dual Fuel)
The short answer
EcoFlow lists this part for one power station on this site. Here is what they say.
What the maker says
named companion generator
These are the maker's exact words, copied from their own page. We do not reword them. That way you can see for yourself how strong the claim is. "Sold with this model" is a weaker claim than "works with this model".
Listed for these power stations
Listed for one model does not mean it fits another, even in the same family. Check your exact model before you buy.