I bought years ago, live in Florida, only really used when necessary, worked great ! Have been using more lately for a reading lamp, I have replaced batteries, just recently only 1 tube will light up, so i replaced both bulbs, so disappointed that bulbs havent fixed problem, only 1 side will light up, enjoyed it so much when both bulbs would work at same time, it was great to use when it worked properly. I would really like to get a replacement, it does state it has a lifetime warranty.