I bought an Olight X& Marauder kit for $174 six months ago. It has failed - only get a very weak beam from it with the high discharge 18650s, fully charged (same result with regular 18650s that are brand new and fully charged).
I have sent the Olight store (warranty service in the US for Olight) three emails and have called four times, and have not gotten any reply.
It looks like this is a common problem. Does anyone have any suggestions? I own six Olight flashlights, and I'd like to buy more, but not if I can't get warranty service, especially on my most expensive flashlight, the X7 Marauder.