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DEAL XTREME LAMP, AGAIN
HI GUYS, THIS IS A COLLABORATION FROM
CHEVROFREAK
The problem with the Deal Extreme modules is that none of them use thermal regulation to reduce the drive current to the LED to control the temperature of the lamp. LED's do not like high heat. It reduces their efficiency, shortens their lives, and can cause the tint of the light output to change.
The Nitrolon body of the G2 acts as an insulator rather than a conductor, so that heat just stays inside of the lamp and cooks the LED. These modules are better suited for use in aluminum bodied flashlights like the 6P. They'll work alright for short bursts in the G2 (I'd say a max of 5 minutes) but extended use is not recommended outside of an emergency.
Surefire recently released a G2L and 6PL that uses their P60L LED module. It has a sensor under the LED to cut the current back when the LED gets hot, in order to prolong life. Well, the G2L has only been out for a few months now and Surefire has already made a change in it. They swapped the Nitrolon bezel out for an aluminum one in order to help dissipate heat.
Since they did this with a light that uses a thermally regulated module, it makes you wonder just how incredibly hot the non-thermally regulated modules actually get. Actually, I don't have to wonder since I tested a Deal Extreme 4068 module in a G2 and after just a few minutes it was too hot to hold in my hand, and the tint of the beam had shifted blue. It was perfectly fine in an aluminum bodied flashlight, though.
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