So, I picked my MS18 today to check how it behaved in comparison with ChibiM’s one.
Honestly, I didn’t do a test that long , but I guess the conclusions can be retrieved from the table below.
Test was made at 10.000 lumens during 10 minutes only.
I stopped the test, as the head of the flashlight was already too hot to handle (if grabbed by the head), although handling it through the battery tube with thumb on the switch was still OK, but warm. By then the tube was at around 38.3ºC
At 10m I also felt some different smell, and while appraching the head to smell it, I accidentally touched the host with the nose tip and burned it Not nice! Blame is on me
I stopped the test because, given the heat progression, I knew this would lead to similar results to what ChibiM got.
||ºC near the switch
||ºC head (near bezel)
If at 10 minutes the exterior is at this temperature, I will assume that the inside is above 70ºC , which means that the fan didn’t activate , as stated in the User Manual. Of course, without having a way to measure it internally, this is just a wild guess, but it seems logic to me that the heat will be higher in the internals.
This said, what I can say, again, is DO NOT LEAVE THIS FLASHLIGHT ON UNATTENDED, in any level, but specially at this one. If above it, the fan will turn ON. If below, I believe that the light will still get hot, but the amount of heat is probably lower.
Also, this test is of course much more “accurate” than the one I did yesterday in which the battery was more drained, while today it was starting freshly charged !!
Thanks ChibiM for alerting to this situation!