i am beginner to leds

[sherex28]

NEED help on MCE-CREE .
i would like to design a battery box . i am using a cree MCE led, but what driver , battery should i sue. i want the maximum output and the battery should last me at least 2 hours(minimum). I need this battery pack to be portable and light and small. please advise
thank you

 

[Jarl]

3x18650 in series with a boost driver (shark, maxflex). You need to be careful you don't set max. output current too high, but you should get 2 hours at max rated power with this combo.

 

[Gunner12]

3 18650s(2000 mAh+) or 9 NiMh AAs(2000 mAh+) along with the drivers mentioned by the above poster should work. Wire the batteries in series.

 

[shakeylegs]

Cree's cutsheet indicates 3.9V max per emitter. Are they specifying max voltage per die or for the whole emitter? Guess it depends how the addressable dies are wired. Can anyone clarify?

 

[Gunner12]

Probably per die as 3.9v with all the dies wired in series would do nothing.

 

[yellow]

2 hours will also work with "just" 2 18650.

Get a 2 18650 host light and put led, focusing device, Shark/Maxflex into.
wire led in series, of course.

The larger the head, the better. That quad-emitter will cook anything (makes too much heat)