CREE XP-E Q4 green? anyone tested?

[infa008]

I just recently started looking into led's again and ran into the CREE XP-E Q4 green with 3.9v at 1000ma. Has anyone tested this one out on a direct drive. It sounds like an easy build as the volts and stuff are low and looks to have more lm than a lux V.

http://www.led-tech.de/en/High-Power...9_120_138.html

[Darth Thanos]

maybe but what about optics?

[infa008]

i believe the site has optics for cree and maybe the optics used for the luxeon rebels may work for it as they are about the same size

[PhoenixReborn]

You're better off using a rebel green. They put out 180 lumens at 700mA (@ about 3.2-3.4V). They exceed 200 lumens at 1000mA (max rated amperage)

[Malaki Skywalker]

Had a couple on the bench about 6 months ago (Blue and Green), they seem really bright and you can get some nice shades to, I believe they are rated 200 Lumens for 700mA. Now they have narrow Tri-Optics it might be worth trying 3 of them in Parallel, stay tuned as I might just get some rebels for comparison sake

[infa008]

yeah a comparison would be sweet. I was looking around the site and the rebels seem to only put out like 80 lumens. I have always been wary of the rebels as they are small and I'm trying to beat out my luxeon V. Not to mention they are hard to get nowadays.

[RevengeoftheSeth]

It's hard to compare lumens between Lux and Cree LEDs. They each rate their own, and Cree overstates theirs.

[infa008]

just decided to go with a ledengine 10 watt quad green on 14.8v 2200ma lion set up for a quick brightness whore set up. have to machine a new hilt for that one though. generation two should be sicker than ever.

[Sunrider]

Think about the parallel pcb version, 16v packs are not so good in some ways.

[Malaki Skywalker]

10 Watts are all good and all, but you have to look at it in a compatibility sense. For example; you take a CF V5 which can throw out 2A, take 3 Cree XPE's in Green in parallel - giving you 500+ Lumen with a good 8 Degree Tri-Optic.

So equip yourself with a good battery setup, take no worries with heat management as its not an issue because your only dealing with 6.8 Watts - a normal TCSS heatsink will deal with that easily.

As for the optics, as long as you use a thin walled blade (21mm ID) with the Tri-Optics (20mm) you will get plenty of light up the blade

Heres some rough specs for Parallel set ups:

Tri-Star Green XPE's - 3.2V @ 2100mA = 600 Lumens

Tri-Star Blue XPE's - 3.2V @ 2100mA = 210 Lumens

Tri-Star Red XPE's - 3.2V @ 2100mA = 300 Lumens

Tri-Star White XPE's 3.2V @ 2100mA = 1110 Lumens

Take the CF as an example, it will only give out 2 Amps, but trust me, 100mA makes hardly any difference. Even when they are powered at 1 Amp, they can chuck out some fantastic numbers - Green would be 300 Lumens, Blue 105 Lumens, White 417 Lumens.

So for what its worth your only dealing with 6.8 Watts, I'd rather deal with that myself then 16.8V @ 1 Amp for the same Numbers LOL