KL4 on One Cell-Output and Runtime?

[PseudoFed]

Maybe this post will contain my text! I like my KL4 head on my Vital Gear 1 cell body--a tiny pocket flood machine. Anyone have any data on output and runtime using one Surefire battery with this setup. Could not find anything in search. Thanks!....Jeff.

 

[easilyled]

AFAIK, you'd need to use an RCR123 to drive this to the max.
I don't think a std. CR123 would be as bright.

With a freshly charged RCR123 you can expect the 100 lumens output
that is normal for a KL4. This output will drop off once the RCR123 is
drained and starts losing voltage and current.

I think the runtime with an RCR123 is about 25 minutes but it won't
be at full brightness for the whole time.

They call this arrangement (of a KL4 on a 1-cell body) a TW4
(after Tactical Warehouse)

If you do a search on TW4, I think you'll pick up a lot of the information
you are seeking.

 

[PseudoFed]

Thanks Easilyled. Just the information I needed. I'll keep carrying my little flood baby, but realizing it won't light for me all night long.....Jeff.

 

[JNewell]

Google TW4 for lots of info on this one.