What are good lights for AW's IMR 16340?

[OrlandoLights]

I just got the IMRs for a LF3XT that's wrapped for Christmas. The way I understand it, IMRs are trading off some low-level runtime for safer chemistry.

What would be some $150 or under flashlights, including LEDs, Incans, drop-ins or modding, that would be a really good match for the high discharge IMRs?

I have the L2D, ZebraLight H50, LF2 and LF2X, and soon the LF3XT.

 

[ampdude]

Hello, great question! I got rid of all of my lithium cobalt cells for the new IMR's (lithium manganese) :)

I have three sets of batteries that I am currently using in:

1. Surefire A2-HA Aviator with unfrosted Lumens Factory HO-A2 lamp assembly.

2. Surefire C2 Centurion with an unfrosted Lumens Factory EO-9 lamp assembly.

3. Surefire E2e with Lumens Factory EO-E2R lamp assembly.

 

[lctorana]

Hello, great question! I got rid of all of my lithium cobalt cells for the new IMR's...

Um, why?:thinking:

Have you still time to fish them out of the bin?

 

[OrlandoLights]

Thanks for the reply, Ampdude.

Are Lumens Factory lamps especially suited to the IMRs because they can use the high-discharge?

Can you recommend 1 of your Surefire and Lumens Factory combinations out of those 3?

Hello, great question! I got rid of all of my lithium cobalt cells for the new IMR's (lithium manganese) :)

I have three sets of batteries that I am currently using in:

1. Surefire A2-HA Aviator with unfrosted Lumens Factory HO-A2 lamp assembly.

2. Surefire C2 Centurion with an unfrosted Lumens Factory EO-9 lamp assembly.

3. Surefire E2e with Lumens Factory EO-E2R lamp assembly.

 

[oronocova]

I don't know if you can really say this is "good" because of the very short run time... But, I have one of FiveMega's D26 bi-pin adapters and one of his FM1794 bulbs in a 6P size light. The output is startling for its size, so much so I am planning on trying the 22W axial bulb and some different reflectors in it.
Someone correct me but I think the FM1794 makes around 450lm on this combination? Definitely looks like it.

 

[indycrucible]

Here is six pages worth of info:

http://www.candlepowerforums.com/vb/showthread.php?t=211090

 

[linterno]

Removed.

Sorry. Wrong thread.

 

[StarHalo]

LiMns are a good choice for high-current applications, which would be only the very highest-output flashlights. This would include some of the Lumens Factory HO- and EO- drop-ins, hotwire bulbs, and LED hardware that can do a 2C and above draw (JetBeam IBS models).

In any other device, there's no advantage to using LiMn - you're better off using a Li-Ion for its greater capacity/runtime.

 

[divine]

I think almost any incandescent rechargeable setup (that won't flash) will run nice with IMR cells.

 

[ampdude]

Um, why?:thinking:

1. Safe chemistry.
2. Holds a higher voltage under load than lithium ion, making for higher brightness over the run. (incans)
3. Slightly lighter weight.
4. Appear to have better performance and less prone to failure in cold weather. (unconfirmed)
5. No PCB on the IMR's to fail or drain the battery.
6. Fits in tight bodies, like the A2 or newer E series more easily. (again, no PCB)

7. The first setup I listed on post #2 of this thread was only possible with lithium cobalt cells because I went through 6 new lithium cobalt RCR123a batteries and was able to find two that fit into my A2's body after peeling the labels. With the lithium manganese (IMR) cells, all six I had fit perfectly just like a CR123a cell. Runtime should actually be improved with the IMR cells, since I'm running a Lumens Factory HO-A2 lamp assembly, which draws more current than the recommended 2C max discharge rate of lithium cobalt cells. I'll have to double check the current draw, but I believe it was over 1.3A.

The second setup I listed is impossible with the lithium cobalt cells as they cannot provide the 1.9A current the EO-9 needs to run.

The third setup will work fine with either type of cell and the lithium cobalts will probably have a slightly longer runtime.

But it's not enough to outweight the negatives, in my opinion.

 

[ampdude]

Thanks for the reply, Ampdude.

Are Lumens Factory lamps especially suited to the IMRs because they can use the high-discharge?

Can you recommend 1 of your Surefire and Lumens Factory combinations out of those 3?

I would recommend the E2e and EO-E2R setup for general purpose.

It doesn't have anything to do with Lumens Factory lamps. It's just that higher current bulbs like the EO-9 and Surefire P91 draw more current than the smaller lithium cobalt cells can provide. A lithium cobalt in 18500 or 17670 size can power the EO-9 or P91 just fine. But then you're looking at carrying a three or four cell sized light instead of a two cell sized one.