We have a pre-lit battery operated wreath and the batteries last a long time - more than one season. It is on a timer. You turn it on at the time you want it to come on and it stays on for something like 4 hours and then goes off. The same time the next day it comes on again. We are away for the holidays and I love it for that reason as it looks like someone is home with a wreath lit up on the door. We got it on clearance some years ago but can't remember where. We changed the batteries this year not because they didn't work but because we wanted to make sure they would last while we were gone. They were a couple of years old.