one time I was expecting a hatch and the power went out 4 x, I still got 11/11 but I put them by the fireplace. And a diff time I used handwarmers, and one time power went out 2 days before a hatch, 3 eggs I put them in my bra and went to bed. Power came back I put them back in incubator, 2 hatched one day later, one hatched a day or 2 after, but it was placed in incubator late.