I have an MS18 and the fan will not come on at the high setting I believe it use to at all when using the light at high outputs. It will come on with the four-button pushes. Or does it have to reach 70 C first? I think there is a problem.
Well, it is getting ready for a trip to China they said they will warranty it and pay me for the shipping. Wish me luck. I have been down this path before with ACEBEAM, That was a nightmare. When you buy these high Lumen Flashlights China is always the fatal flaw to them. Out of all my thousands of dollars of flashlights, the most practicable is my Streamlight is Pro Tac HL 5 with 18650s. It was my first High Lumen flashlight and all the others follow.