P60 drop in that runs on 1xCR123A

Thertel

Newly Enlightened
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Mar 4, 2005
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Fort Hood Area, Texas
I am search for a P60 style drop in that runs on 1 cr123a for use in a older surefire 3P, I tested the fit on a malkoff unit and it fits fine but needs a different driver. Any help would be great.
 
I would definitely go for the Malkoff M-30. I have an FM 1 cell tube with Surefire head and tail cap that is about perfect.
 
If you decide to go with Solarforce, be SURE to get one of the .8v-4.2v dropins. They offer single mode, three mode and five mode. I have at least one of each, and they all work great.

The 4.2v-8.4v dropins won't work 1xCR123. Neither will the 6v-18v single mode - but I bet this last one gets some killer runtimes at 9v or more!

 
I am search for a P60 style drop in that runs on 1 cr123a for use in a older surefire 3P, I tested the fit on a malkoff unit and it fits fine but needs a different driver. Any help would be great.

There are 2 Malkoff units: M60 and M30. The M60 is for multi cells (over 3.7V) and the M30 is for single cell use (like a single 18650 or 123).
 
Either incan. or led is fine.
I am looking for cheap drop-in which can run full power with the FM 1x CR123 body.
 
Either incan. or led is fine.
I am looking for cheap drop-in which can run full power with the FM 1x CR123 body.
Well, I don't know much about incandescent P60's, but the Dereelight and Nailbender LED drop-ins are about $35-40 and use the latest Cree XP-G R5 LEDs.
 
Bigchelis tested a few low-voltage LED P60 dropins for output at ~2.4v (2xAA, but pretty much the same voltage you are looking at) and the XP-G Dereelight Javelin drop-in came out on top (200-250 lumens), way ahead of the low-voltage Solarforce. The Nailbender is probably competitive as well. The Malkoff M30 is a great unit but getting a bit dated, it does ~160 lumens from 1x CR123.
 
I use the M30 with two NiMh AA's as well, and it holds steady at 1A draw at the tailcap. I use Eneloops. I would guess that XP-G's delivering 1A to the LED would be pulling close to 3A's at the tail.

Bill
 
I use the M30 with two NiMh AA's as well, and it holds steady at 1A draw at the tailcap. I use Eneloops. I would guess that XP-G's delivering 1A to the LED would be pulling close to 3A's at the tail.
I would expect a good P60 to pull considerably less than 2A from the battery in order to deliver 1A to the LED from 2xAA's.

A good boost driver should be about 90% efficient so to put out ~3.5W (1A) it needs to use ~3.9W, which is 1.6A from 2xAA's (2.4V).
 
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