I don't personally know if any changes have been made to later runs, but I know they are finalizing the 2xAA tube which should have a new tailcap (haven't seen it yet, though).Has there been any upgrades for the switch delay/feedback issues?
Any upgrades to the sharp edges on the switch?
FYI, I have been EDCing my LF3XT since completion of this review, in compact user interface form. I find I prefer the way its memory feature works over the Nitecore D10/EX10 (i.e. the LF3XT doesn't erase the preset if you use quick-jumps). I have gotten quite use to the sharp edges and soft clicky - no problems carrying and using it here.
Hmmm, can't think of what may have been the cause here - but I'm leaning towards the old partially used battery as the culprit. The only time I've seen very hot batteries have been in multi-cell cases (with over-driven lights).The number of dangerous failures I've read about have me concerned. I am not sure what caused this failure but installing a brand new CR123A (reported at 3.2 volts) the flash light appears to work properly and not to overheat. But I'd like to know for sure the probable culprit. Can an older lithium battery fail in this fashion? Or might there be a problem with the LF3xt itself that could precipitate another episode of overheating? If the former, I will be sure to use only fresh primaries. If the latter, I will need to send the light back for inspection. Thanks in advance for your valuable advice.