Thanks for the good vibes everyone! I am definitely thinking about being more prepared for power outages in the future. I might go with a power inverter like this, for the car. I don't hatch all that often, so I'm not wanting to make a big investment and I also figure this would be duel purpose as I could use it for other things in similar situations. I've also been told glove heat packs, hot water bottles, and snugging your incubator up with a blanket can all help during a power outage. To be honest, this experience has made me like the Uglybator even more than ever. With the thick insulation of the cooler and the large amounts of thermal mass, it held it's temperature quite well for being off grid for so long. Much better than the Mini, as you saw!