I went through a couple of gas powered weed trimmers. After a few years I started having to replace fuel lines and filters. Then they got to where they didn't want to start at all. I replaced it with an electric one. I like it a lot. The battery lasts 30-45 minutes of work. I'm happy to take a break at that point. I suppose I'll have to replace the battery at about the same interval that I started having trouble with the gas one. I sure like not having to yank on that starter over and over.