Even if you have an EU2000 and decide to get a second, there's still NO reason to buy the "Companion". They make no more power than any other EU2000. Two will make about 26 amps, Companion or not.
And I don't know if anyone else noticed, but the 30-amp socket on the Companion is THE WRONG ONE! It's a twist-lock, not an RV30. So, you still need an adapter. What's the point?? It's just marketing hype.
X2 ! ! !IMO, there is no reason at all to buy a companion… IF they offered it with a 30A RV socket, then
maybe.
Those who complain about the 8A 12V battery charger clearly haven't used it to start a car with a dead battery… works like a charm! (true, it's not a practical way to recharge a deeply discharged RV battery)
Just get the regular EU2000i. If you ever decide you need more power just get a second one and buy (or make) a parallel kit with a 30A RV receptacle in it.
-Mark