Mrk442, we need some links to the specific lights in order to be of assistance.I don't know which Dorcy headlamp you are talking about
My best advice is to AVOID 3xAAA lights of any kind. They are generally direct-drive and have poor runtimes.[/QUOTE
Direct-drive is not always a bad thing. I ran the Dorcy for well over 20 hours on alks and the output was very strong for the first 12.