Had a Yamaha 2800I, a Honda 2000 and now a Champion 2500, none of them will take a surge load in ECO.
Don't believe the Pred will either. The circuitry is not designed for a surge load in ECO mode. ECO (quiet mode) is all about low draw applications, like charging your house batteries or powering a light or 2 and that is it.
If you think they will, you are in for a rude awakening. None will.
2015 Backpack SS1500
1997 Ford 7.3 OBS 4x4 CC LB