Hello everyone, I hate to beat a dead horse, but I have a question about power inverters. I did some searching and found a few old threads about power inverters in cars, but none of them really answered my question, so I decided to register and bring it up again. My parents-in-law have a small solar/battery system in the kitchen, attached to an 800W Kawasaki modified-sine-wave inverter that they hardly use. I have MacBook that I use all the time, and since it's almost 2 years old I only get about an hour of battery, so it's plugged in most of the time. My dad has one of those Kensington cigarette-plug inverters, that I've used to power my computer in the past. Upon closer inspection, the Kensington claims to output a "regulated modified sine wave", whereas the kitchen's Kawasaki (as far as I can tell, at least) is just classified as a "modified sine wave" inverter. Is there a difference between "regulated modified" and just "modified", or are they all "regulated"? I've been researching online all afternoon, and everyone says "yeah, it should work," but I've yet to find anyone who can actually say, "I own a MacBook, and I've used it with a basic modified sine wave power inverter, and it hasn't caught on fire, or melted, or otherwise been harmed". My mother-in-law is afraid to plug her laptop in it, but she doesn't really have any solid reasons for not doing so. Can anyone help?