Interesting numbers here
Honda 400w *9.6 hrs = 3840 whrs
CPE 1600W * 2.4hrs = 3840 whrs
1600w * 4hrs = 6400 whrs
Now pray TELL how does Honda pull of this miracle of getting almost 2x the Watt hrs out of a 1.1 gallons of fuel while working 4x as hard
I've interpreted the Honda statement of "1/4 power" to be from the maximum load instead of the continuous load, leading me to use 500 watts instead of 400 watts for the eu2000i. This makes my numbers different, but doesn't change the point I want to make. According to the Honda website numbers:
eu1000i: 5.7 kWh/gallon @ 900 watts, 3.125 kWh/gallon @ 225 watts
eu2000i: 5.8 kWh/gallon @ 1600 watts, 4.35 kWh/gallon @ 500 watts
eu3000i: 5.93 kWh/gallon @ 2800 watts, 4.41 kWh/gallon @ 750 watts
My point is that Honda claims better fuel-to-power efficiency at the higher power levels for all 3 models. If it's true for Honda, I'd expect it to be true for Champion. And I lean towards viewing all of it suspiciously until somebody here makes careful actual measurements. With the way the manufacturers warp specs, who knows how they might have corrupted this one?
