looks like xml 1st gen on 12 or 14mm mcpcb. the driver should be 2.8-3A, that is the max current the led can take.
you could try sst40 or xhp50.2 either will give you more light. if you want narrower beam you can use xpl, or xhp35, as well as Samsung led, but they will need a different board. Driver will depend on what led you use.
However in your case, you are limited on boards, and how you can mount them, you can't use screws, no room on that board, nor anything is pressing it against the aluminum piece, so you only can use thermal adhesive, it generally has higher thermal resistance than paste, so you do not want to drive leds too hard.
Just get a 3v SFT40 LEDI like the thought of a narrower and brighter beam. The heat sink has an 18 mm recess behind the led which is on a 5.5 mm cylinder with the led thermal cemented to it. Is there a driver which would work with my led and an xph35?
Thanks kerneldrop the recommendation is appreciated. I've never built an led flashlight, I bought this one a long time ago.
I can put in any LED.
I don't know of a 2S 12v driver for the XHP35...I can ask Mtnelectronics if he can make one.
XPP and W2.2 may be good options...they'll give throw and spill.
I've got tons of 3v choices. I have some crazy output round LEDs. or excellent HCRI LEDS that are more pleasing to the eye.
I've never played with the XHP35 because 12v really limits the boards and drivers.
I don't have the expertise to modify the components...so i stick with boards, drivers and LEDs with the same voltage requirements.
I've seen people grind out the middle of a 6V board to where they can use a 3volt LED on a 6V driver and board.
Thanks for the offer the flashlight is kinda special to me. It's my first awsome flashlight.What's the complete flashlight look like? Do you have modes now or is it one output?
If this light is special to you then send it to me...i'll put in a new driver and a SFT40 in it.