if you're not familiar w/ this light, see here for pics and discussion https://budgetlightforum.com/t/-/5225
I started by measuring current to stock emitter w/ alkaline AA I got a measly ~40ma. Same measurement for the 'new' emitter (P4 left over from B&D Flex 360 mod). It was brighter, but disappointing.
So, I measure voltage coming off the driver (w/o emitter connected) I got 5V for alkaline and 5V for 14500.
Measured current to new emitter w/ 14500 and got >500ma, so I decided to go ahead...
This was a pretty easy mod. I used a 1/2" copper pipe cap. Cost, 68 cents.
It slides into some of the lights easily, w/ just a little friction, others have some raised edges on the inside, almost like threads, and would just need a few swipes w/ sandpaper for a good fit.
The flat side was slightly dome shaped. A few taps w/ a hammer fixed that. Next, a little bit of filing to make it completely flat for good contact.
Then I drilled two holes for the emitter leads. Soldered them on, put a drop of thermal compound under the emitter plate, held it against the copper while I put a blob of hot glue on the inside (probably not a great choice...meh).
I took the reflector and cut the small neck off the back, filed it flat and assembled the light to check fit. I couldn't quite tighten the head past the o-ring so I took the pipe cap back out and ground about 5mm off the bottom edge, flattened it with a file and put it back together. Good fit.
Took it back out, soldered leads to driver, and stuffed it into the bottom of the cap w/ a little hot glue.
Done.
You can't tell in the pics, but the hot spot is a little blotchy because the hole in the reflector is much bigger than the emitter. A bare xm-l would fit beautifully. I can't use it in candle mode now because the reflector is all that is holding the emitter tight to the heatsink. Other than that...its ok, i guess...
Done w/ a better emitter, thermal epoxy, and thermal grease between copper and light body it would be a pretty nice light, and at a total cost of $8 to $12. VERY lightweight compared to my other AA cree lights...
Lux at 18" (android phone)
stock ...........................1300
modded w/ AA ...............2900
modded w/ 14500 ......... 14000
For reference, Sipik sk68 clone on 14500 at same distance - 4500 in flood mode, 59000 zoomed
Modded w/ alkaline vs Stock w/ alkaline
Modded w/ 14500 vs Stock w/ Alkaline