For those of you who own the Pullet-Shut door, what power source did you go with? I have electricity in my coop, so I was going to just go with the plug-in adapter. The owner told me that with any power surge, my settings would erase and the door would override to the photo sensor if I went with the plug-in adapter. Anyway, we have 12 volt batteries that I can use with either the solar panel or the electric trickle charger. My question is, which should I go with? Besides one using solar power and the other using electricity; is there a benefit to one over the other?