Im soo confused with this and was hoping that someone can lead me in the right direction. I dont want to get a generator. I am interested in a battery back up for my pellet stove. I've heard some people mention a marine battery for this purpose. Can someone explain to me what type I should look at online? How long will the pellet stove be able to run on the battery? Does the battery stay hooked up all the time to the stove? I am getting a Harman Accentra Freestanding stove if that helps at all. I am really confused and could use all the help I could get.