Orion said:FWIW, I DO have a problem considering the purchase of a polycarbonate flashlight that has a Luxeon in it. Heat issues and all.
Tremendo said:If you're referring to the Streamlight PP 4AA LED, mine doesn't get hot at all. It's one of the "coolest" lights that I have, and I haven't heard of LED heat issues with it, even though many here have the light. If you're talking about something else, my bad.
nerdgineer said:No guarantee of BIN, but at least the reviewers both seemed to get good Gerber LX3.0's. Some CPFers love theirs, others were not overwhelmed.
Elektrolumens XM3 is a claimed 3W light and I like mine, but others think it is underdriven. On sale now.
The Streamlight Propolymer Lux 4AA is rated as a 1W but it is brighter than a number of 3 watters, and on sale too.
Emilion used to carry a 2AA 3W LED clone which seemed to be well liked, but it's gone. now.
Diesel_Bomber said:Heat buildup in the SL PP AA Lux is a non-issue. I run mine continuously for a full set of batteries(4+ hours on nimh) several times a week. When changing the batteries afterward I've never had the aluminum reflector/heatsink be more than warm. Just because I'm curious, I'll shoot SL an email and ask if the light is thermally regulated.
Cheers. :buddies:
Handlobraesing said:Let it run for half an hour or so and take out the head. It's almost too hot to touch. While it likely wouldn't suffer a failure prematurely, it is a problem.
Permanent output degradation occurs much quicker at higher temperature and output is reduced at high operating temperature.
Diesel_Bomber said:Yes, I've done exactly that. Several times. Almost too hot to touch? Hardly. Much ado about nothing; it's not a problem.
Cheers. :buddies:
Edit: SL has yet to reply about thermal regulation.
Handlobraesing said:I don't know about yours. Mine gets hot enough to be unconfortable to hold the lamp assembly for more than ten seconds or so after its been on for a while.
Streamlight CS said:We tested the 4AA Luxeon in an oven at 130F and found the LED was still safely within its temperature range so there was no need to add any thermal protection. The product has a lifetime warranty. Don't worry about it.