How well does a KL4 work on an E1 body?

I have an E1L and an E2e, and am shopping for a KL4 head to round out the collection. Assuming I can find a KL4 head that works with the E1 body, what kind of regulated runtime and level of brightness can I expect from a 1-celled KL4 using SF primaries. If there's a better option for batteries, I'm open to it, but I definitely don't want to use unprotected. I don't know a lot about batteries, so the unprotected scare me. I am hoping I can get a 1-cell KL4 to put out full brightness for about 20 minutes. Is this possible?

Thanks guys
SCblur

it works like a dream, I've got a mint KL4 head available that bright and white! Wbin brightness +

Please PM if interested..

edit: SOLD...

I *think* the runtime varies from light to light..

20 mins is very possible. I use an unprotected RCR123 cell with mine. I recharge cell as soon as I see reduced output. I have never really done a runtime test. It is quite a small and very bright package.

KL4/E1 on left [edited: not really - its an E1e incan]; QIII on right.

cheers

If you use a regular CR123 then it really depends on the Vf of the luxeon. An R123 should get you at least 25 min.

powernoodle said:

KL4/E1 on left; QIII on right.

cheers

Click to expand...

I believe that is a E1e/MN01 on the left???

You're right, dang it. I forgot that I even had that one.

Here's the KL4 I usually have on that body. (This one is a CR2).

cheers

It workls GREAT. My edc for nearly a year

I've used these two for a year and a half:


Protected R123's shut down the light after 20 min or so, but when unprotected R123's start to dim, they give you some minutes time to find your spare in the dark!

I go through at least a dozen charges a week on these, and so far I've only lost one ($4) battery due to leaving the light on too long (came on inside a case).

Of course there is a lock out function on this light, and with the amazing output and overall build quality, this is among the Rolls Royce of EDC lights.

It does get very hot, but so do all KL4 heads.

rickvee
what material have you got protecting your KL4+E1E body? is that heat shrink wrap ?
looks great
what have you got labelled on your flashlights ?
cheers mate
Des

Hi Des :wave:
The bezel edges of my TW-4's are made more user-friendly by F04 beamshapers, and the colored PVC tape has a date and my name, there are 4 layers, so I can hold the light between my teeth....

SCblur said:

Iwhat kind of regulated runtime and level of brightness can I expect from a 1-celled KL4 using SF primaries.

Click to expand...

You'll get exactly 0 minutes of regulated runtime on SF primaries. It will run, but it will never be in regulation/full brightness.
I've gotten ~30 minutes with a protected 750mAh R123 with a KL4 that came on a TW4(these were handpicked for low Vf), but don't expect more than the 20 minutes these other folks are getting.

How did tactical warehouse hand pick them?