Imalent MS18 with 100,000Lumen and R90TS with 36,000Lumen

Then it is quite sure they really design active cooling for lumens higher than 10k only. Their thinking might be that DX80 has no fan and it is 30k lumens.
But I think if there is a active cooling feature, why not have it for all modes, let the temperature decide. If user uses Turbo and 25k for let’s say 5 minutes, and then switch to 10k lumens, MS18 should still be very hot.

Can’t you manually turn on the fans?

That means during OFF—Turn On Fan—>Use whatever level—->Turn Off Fan after use.
That is quite manual.

Is it not worth it to have fans on at 10,000 lumen for long time? I thought this is what you wanted?

Automatic is always most convenient in this case. Manual override is also good feature, they are not mutual exclusive.

Just when the main leds OFF. With 4 clicks. But one click turns fans off. Abother one click turn light on. When main leds ON 4 click does nothing.

I have ordered a R90TS,but my order is in the processing status till 24/05, because they try to fix a problem with the plastic case which is in the box.I think they start again shipping at 06/06.

So you can’t manually turn on the fans while at the 10k lumen level?

You can’t manually turn on fans at any level. Just when flashlight is off. That is sadly limits the use of the 10K level. It is better to use 22k if you don’t mind the fan sound vecause the light is cooler in that level than 10k. At 22k I measured 50°C at head after 10 minutes.

i try to convince them to add "4clicks activate fans" also in ON

Martin, can the fan on based on temperature too?
Automatic active cooling for 10k will be better compared to manual cooling.

they said its temperature controlled...

Just made a test.
10K 15 minute run. It reached 81.8°C which is a lot! No fan kicked in. But it slowly decreased output in 1-2minute steps to about 85% in 15 minutes.

But just above 10k levels.

I think easier way is to include 10k or all other levels in the active cooling protection.
Manual fan on during light on is nice too.

Started with full battery and the start temp was 21°C

And in the glass lens center I saw some condensation after test which disappeared after cooldown. You can imagine if the head outside was more than 80°C the leds could be easily above 100°C:

That’s really nice tracking graph. It tells us how the output behave.
But I find it strange the output drop in steps, not smoothly declining. Is it due to light meter resolution?

Did the 22k lumens output level drop like that too?

Now it is charging again to make that one too with full batteries. :wink:

YouTube

something that need to be mentioned…

I must have made you do this?