XP-G R5 @ 1.8A: Will it die fast?

[-Gast-]

Hello!

Im using a XP-G in my Mag-3D at the moment.
Its running at 1.8A.

is this far to much or would you say its ok, if heatsinking is good enough?

 

[saabluster]

Hello!

Im using a XP-G in my Mag-3D at the moment.
Its running at 1.8A.

is this far to much or would you say its ok, if heatsinking is good enough?

That will be just fine with robust heatsinking.

 

[Curt R]

If the outside of the light gets hot, you are fine. If only warm after about 3 to 5 minutes, than the LED life may
only be about 300 to 500 hours. Big deal. 20 to 30 hours with a standard Mag bulb. Still very cost
effective plus a lot more light.

Enjoy

Curt

 

[-Gast-]

Wasnt on more than a minute continiously until now... it was a little bit warm after that.

 

[Curt R]

The idea is to get the heat from the LED to the outside surface of the flashlight so that the heat can be
radiated to the air. A large heat sink inside the light does no good if that heat is retained inside the light.

Curt

 

[-Gast-]

Its now on 1.2A,so it should be ok.

Why?
I used NIMHs to set the right current. Problem was: they are pretty old and after 3 days laying around they lost a lot of charge (didnt expect so much)

I recharged them and tried the flashlight (i knew that i should be careful and measure current with fresh charged NIMHs again) and it was like: "oh wow, bright!" 1 sec later: "oh no! Blue!"

Measured: 2.2A or above (not like to kill it)...


But now its fine



and if dx would hurry up i wouldnt have to use a resistor in row...

 

[csa]

Heh. I've definitely had that same problem myself... current regulated is the way to go.