We have 4 OTTs….3 are mine and the other is anyone caring to use it!!!
I love mine but the last one I purchased was the portable/battery operated one…I was not too pleased with it. It did give bright light but the batteries did not last long at all! I wrote to Ott as I thought perhaps they recommended a particular battery and got a reply very quickly…and they were quite helpful. They did not suggest any certain battery but did tell me that I might want to purchase an adapter…which I did (at Radio Shack) and I love, love, love my little light weight portable lamp……..it goes everywhere with me.