I'm confused. Just now I was using my 700w microwave and noticed that according to the readout on my all in one unit the power was running as high as 1100w and as low and as low as 40w. I wasn't too alarmed by the high but the low seemed odd and I assumed something was wrong with the readout. So I put the Kill-o-Watt on the microwave, and yes, it is cycling as low as 40 watts during cooking. The food came out cooked, but,,, is that normal? why would it run so low? I have never done a specific test before but I've used this microwave off solar devices for a couple of years now, and though I can't claim to have been glued to the readout I don't recall ever seeing it drop to 40 watts in the past. I assumed it was cycling with a drop of no more than 100w or so. I would venture to say it dropped to 40 a least 1/3 of the cooking time.