Actually, I think Honda sells a parallel kit that will link two EU2000i's together, or two EU3000's, or etc. But, I like the idea of the Companion generator. By the time I buy the parallel cables and hire an electrician to wire up a 30 amp RV outlet, I can't imagine the difference would be more than $25 - $50. If I am going to spend approx. $1800+ that difference just doesn't upset me. Besides, then I have a genuine, bona fide Honda installation. If I have trouble then I won't have a warranty problem.
Rick (K8RWG), Joy, and Daffy (the spoiled Calico cat)
2014 Rockwood 8315BSS
2016 F250 SC LWB 4x4 6.2 3.73
Reese Dual Cam