Temp based throttling works well on mine; after initial light activation on turbo, it starts throttling after about a 80 seconds at an indoor ambient temp of 70 degrees with no cooling fan. You can watch the lux meter drop pretty suddenly when it happens, and the light never quite gets too hot to hold. I imagine it’s about 120°f. I didnt break out my infrared temp gun but too hot to hold for me is about 130°f.
Turning it off and then on seems to reset the temp throttling for a bit- maybe it’s delayed like Tom said- because it will jump back up to the level it was at before the throttling started. Then continue to drop down fairly quickly. It will become too hot to hold after a 3rd reset.
The difference in ceiling bounce lux between the golisi 4300 mah cell and the shockli 5500 mah black label is only about 8 to 10 percent at turn on +10 seconds.
Outdoors is where the golisi shines. Since the cooling fins in the light work extremely well and it’s cold outside where I live, no thermal throttling occurs and the golisi holds more Lumens noticeably longer than the shockli. However the shockli holds a lower level longer. But that’s not what I’m after for this light, I use turbo bursts for distance when needed while out walking to check on my animals, and lesser modes up close. This is a (back) pocket light after all. Long term long range searching, like for coyote hunting, is relegated to my k75 and k70.
Overall, I like it alot- it demolishes anything else I have that will fit in my coat or back pocket, and as a bonus, the tint is nice.
I remember when 1000 lumens and 30kcd were an impressive sight for a hand held flashlight, much less one this size. My first real led light besides my surfires was a fenix mt35 and I was blown away at the performance then. This NI40 is even smaller, with 5X the lumens and 7.5x the throw!
Extra cells are easy to swap in the dark since there’s only one to fumble with, and the rear switch is easy to find in the dark compared to my thrunite cat v6.
Edited to add:
Turbo memory has quit working. Memory for every other mode works perfectly. I guess I’m fine with that, since a full turbo burst from off when not needed, when I cant remember what mode I last used us less than desirable.