Thanks for the tips. We just had a snow storm followed by an ice storm. We had multiple power outages followed by a day and a half outage. Each time the power went out I would go out and start up the generator, but that is noisy, uses a lot of gas, and wouldn't be necessary otherwise. I had 3 eggs ready to hatch, actually hatched during power outage, and more in the incubator for following weeks. I also had week old chicks in the brooder, we could have just brought them in next to the wood stove though.
I'd like to avoid the constant generator next time this happens. Has anyone tried a power inverter hooked up to a car battery? I've got a 400 watt inverter and a 2 amp trickle charger, but no extra battery. I was thinking next time we get a storm if I got a battery I could plug the incubators into the inverter, the inverter into the battery, the battery into the trickle charger, and the charger into the wall or extension cord when power is out. Has anyone successfully done something similar? I figure this setup should last for days as long as I plug it into the generator whenever it is on to run freezers. And for short or intermittent outages the battery should be sufficient.