Ultrafir WF-5/602. A powerful, lightweight, small and cheap, what more could you ask for. I am one of those weirdos that uses his teeth as a third hand to hold a small flashlight when working on something. I don’t have much luck with any AAA lights, I can’t use twisties and rear buttons on AAA’s generally fail. And these Ultrafires are almost as light as a AAA.
Is there a rubber sleeve I could fit on these RCR123A batteries to give my tooth enamel a break?