Is it true the L2D CE Q5 comes with a warning if you keep the 180 lumens on?

LED Flashlights.

Enlightened
Joined
Dec 16, 2007
Messages
206
I heard if you keep the 180 lumens on the Fenix CE Q5 for atleast 10 minutes.

It's not recommend for the light because it could damage the light.

And, if that is true.

What is the highest amount of lumens for this to be true?

Is it anything over 100 lumens or even lower lumens?
 
Last edited:

WadeF

Flashlight Enthusiast
Joined
Apr 24, 2007
Messages
4,180
Location
Perkasie, PA
They only say this is a problem when you are in high ambient temperatures, but they don't specify what counts as high ambient temperatures.

For me personally I don't like to let any of my high output lights run for a long time if they aren't in my hand.
 

LED Flashlights.

Enlightened
Joined
Dec 16, 2007
Messages
206
Thanks, so, if I lefted my L2D CE on for 4 hours at 80 lumens would that be OK?

I've lefted my L2S on for 4 hours once at 45 lumens until the batteries went out.

How about that?

Is 45 or 80 lumens considered high output lights?
 

StarHalo

Flashaholic
Joined
Dec 4, 2007
Messages
10,927
Location
California Republic
The high output they're referring to has to do with how hard you're driving the LED - there's only so much mass in a thin flashlight to provide heatsinking, so if you run the LED at its upper limits for a while, it will eventually melt itself. This would be the "Turbo" mode on Fenix lights.

You can leave it on Turbo indefinitely so long as there's your hand on or cool air flowing over the flashlight.

The lower output modes aren't near the LED's thresholds, so you can use them as long as you like under any conditions.
 

Marduke

Flashaholic
Joined
Jun 19, 2007
Messages
10,110
Location
Huntsville, AL
The turbo mode can be used as long as you want whenever you want if you use the light in a normal mode of operation, meaning you either have your hand on it for heatsinking, there is airflow over it, or the ambient temperatures are not particularly high.
 
Top