Surefire L4, 120 lumens improved version

[1996alnl]

1996alnl -The 2009 KL4 120 lumen head will not run on a single CR123. It will, however run very well on a single RCR123. I use a battery station RCR123 with their charger. Battery Station claims that these cells come off the charger at 4.2v. I run a Vital Gear FB1 HA body with the SF KL4 head and the anodizing matches perfectly. Pocket rocket!

Well that's good to know;
So the newer version will work with a 17670 cell then, for the extra runtime.

Awsome..

 

[munchs]

1996alnl -The 2009 KL4 120 lumen head will not run on a single CR123. It will, however run very well on a single RCR123. I use a battery station RCR123 with their charger. Battery Station claims that these cells come off the charger at 4.2v. I run a Vital Gear FB1 HA body with the SF KL4 head and the anodizing matches perfectly. Pocket rocket!

That's a good info.
Then is there any advantage of having a newer version L4 over old version with Lux5w other than it having a more efficient led?

I have an old version MC-E moded. It's an awesome flashlight. It's runs on all battery variations including 3v primaries with an output the same as the original's! ofcourse, when using 3.7litium cell, it's about 3 times brighter!!!
It seems to me that the old version has a better circuit then...?:thinking:

 

[Bullzeyebill]

That's a good info.
Then is there any advantage of having a newer version L4 over old version with Lux5w other than it having a more efficient led?

I have an old version MC-E moded. It's an awesome flashlight. It's runs on all battery variations including 3v primaries with an output the same as the original's! ofcourse, when using 3.7litium cell, it's about 3 times brighter!!!
It seems to me that the old version has a better circuit then...?:thinking:

The older KL4 head (L4) using a constant current boost circuit and if your MC-E is configured like the Lux V was then it will work very fairly effeciently with one RCR123, and not so with one CR123. The newest L4's use a buck circuit.

BTW, invest in a reasonably priced DMM so you can really keep tabs on your LiIon cells.

Bill

 

[kelmo]

I'm a little late to this party. I just got the latest KL4 and I'm really impressed. It still puts out a lot of spill. But it also has a really fat hotspot. It still fills a room with the proverbial "wall of light" IMHO. And it still comes in a very compact package. It maintains its pedigree, flood, room filling flood. The perfect complement for the KX2C.

Twice the runtime and half the heat, whats not to love? I have retired my LuxV...

 

[madmax718]

So now that it uses a Buck circuit, can you use LiPO rechargable 123's with it?

 

[steve68]

Sorry for bringing up this old thread, but maybe there is somebody out there who can help me.

Sine I have received my L4 - I love it. Small, very powerfull and the formfactor is very nice. BUT sometimes it is much to bright for my purpose. Sometimes I switch it to the body of my LX2 -
and it works with an low level which is perfect for me.
But I would prefer to keep it on the L4 Body (it`s smaller).

My question: Do you know a switch which I could easily change by myself - to get two levels ? And where could I order this ?

Many regards from Germany

Steve