The, oft unspoken and overlooked, downside to using a generator is their atrocious power quality. Honda are, marginally, better in creating a pure sine wave AC output but, generators are notoriously inefficient at producing clean AC. The quality of power is even worse as the generator begins to idle down and run out of fuel. Power spikes, dips, harmonics, and noise are all symptoms of generator use.
Dirty power supplied to solid-state electronic devices and their associated batteries has a detrimental effect on their longevity.
Basically, there are three types of sine waves used in the power conversion/inversion industry;
Looks like the Goal Zero Yeti 150 uses a modified Sine wave
-AC inverter (output, modified sine wave): 110V, 60Hz, 0.7A (80W continuous, 160W surge max)
-Oddly though, their Yeti 400 is Pure Sine Wave AC inverter (output, 60Hz, pure sine wave): 110V, 2.6A (300W continuous, 600W surge max)
Honda eu1000i generators just state "sine wave" with no real clarification on type... even though they use an image of a pure sine wave (highly skeptical)https://powerequipment.honda.com/generators/models/eu1000i