FET to a single emitter light

Flashlight Modding and DIY Parts
1

so far I've built several 7135 based driver flashlights, xre/xpg2/xml/2/xpl, and most of them are being sold to friends. seems like every time I break another one out they'll offer me $5 more than the cost of parts and I'll sell it, buy new stuff and make a better/brighter light.

im getting tired of stacking drivers lol. What would happen if I just run say a mtn17DD to aN xpg2 in a convoy s3? I want max possible output, but I don't want to blow the LED instantly. i know from experience with the stock njang/qlite spring I couldn't get more than 3.4A to an xml2, so I guess I could limit it in some sort of fashion like that if I had to, but will an FET driver with proper beefed and braided springs blow an xpg2, xml2 or xpl? I am to the point I just want to build a few for myself and make these guys I work with start doing their own.. They wouldn't be able to stack drivers but soldering leads would get them started and they could figure it out on their own from there. Of course LeDs will be on noctigons, but would some extra heatsinking be necessary?

Somebody has to have done this, so please share your experience!

2

It requires a copper board and proper mounting (flat pill-surface and a very thin layer of thermal paste), then you should be fine if manual step-down is regarded: if the light gets too hot to hold, switch to a lower mode :-)

3

Batteries will matter with a FET driver, so just select higher mAh batteries to limit the current. Panasonic 3400mah 18650’s should give you good output without too much risk to the LED as long as you follow djozz’s recommendations above.

4

What kind of amp draw can I expect from single emitter lights? I can get over 9A with triple XPG2 and XPL's, would a single emitter go up to 9A by itself? My max so far stacking 7135's is 4.5A.