There seems to be enough data and users of the Trustfire 32650’s to prove their consistency and high amp/mAh performance. What we dont know yet is how they will perform as they age over time. I probably have around 10 discharge cycles through my set of 4… so far so good, but Im not counting on them to last several years; as I would a good set of name brand cells.
@texas shooter - Im on vacation for another week and will get you an ID for the tube when I get back. At first glance, it appeared that tri-boring might be possible if the beginning thread on the battery tube were strategically placed in-between two of the bores. As I mentioned, it would likely wind up with a castellated male thread on the battery tube after boring, but the threads look to be course enough to provide positive engagement when carefully twisted together. Removing the wrappers on a set of unprotected cells would yield even more clearance. Having said that, if I can get a year or two out of the TF cells, counter-boring would only be advantageous for a few more mAh or high drain IMR type cells. My thoughts now are that the light will run a continuous high-mode discharge cycle and not overheat if carried outside in free air. It has that kind of mass and heat sinking to do it reliably. I’ll probably try the resistor mod first to see how I like it.