Testing interest. Possible Barbolight U-06 Ltd.

As CR123 batteries are coming cheaper, we are thinking about making a tactical-dive rated flashlight, using a K2 running at full speed (1500 mA). It will be very similar to our U-04, but increasing seriously output.
2 x CR123 (RCR optional) and regulated for constant current (step down, not linear). More than one hour runtime.
What do you think? I think we can get more than 100 lm after optic and lens.

Javier

Maybe theres some new information out there, but so far it seems like the current K2's are like Lux3's but inferior. More power for the same amount of lux == more heat and less runtime. Please correct me if I'm wrong.

ouchmyfinger said:

Maybe theres some new information out there, but so far it seems like the current K2's are like Lux3's but inferior. More power for the same amount of lux == more heat and less runtime. Please correct me if I'm wrong.

Click to expand...

More current always means more heat and lower efficiency. We have been doing some testing, and in fact it is that way. But a K2 at 1500 mA is brighter than a LuxIII at 1000 mA (T bin). (U bins are coming).
Anycase, the purpose of this project is the brightest, smallest, and most reliable on its class, so we are not focused on runtime. IMHO is more logical a U-04 at near 900 mA, but maybe som customer wouldn't mind to pay runtime for brightness. We will do our testing, and if finally a LSIII U bin overdriven and well cooled can do the job better, without premature loose on performance, we will end doing it that way.

Design objectives: Smaller flashlight that can be hold on hand without burns, as bright as possible. (And of course as reliable and waterproof (environmentalproof) as our previous creations.

I'm interested.

Interested too


Benny

I am interested , too.

Jack

Yes, please make this light.
I will buy one if I can use two RCR-123 batteries.
Any chance there might be a two stage tail cap option?
Rob

Roboholic said:

Yes, please make this light.
I will buy one if I can use two RCR-123 batteries.
Any chance there might be a two stage tail cap option?
Rob

Click to expand...

Agreed. I'm interested anyway (assuming rechargables can be used), but a 2 stage option would be ideal.

Well you know I'm interested as always!

You can count me in.

what about a single 18650 format? much higher mah in almost indentical form factor.

and much safer using single li-ion cell. with all the latest CR123 failures. would not want to have a primary lithium failure within a truly waterproof container like barbolight, would be catastrophic...

so far we don't have any failures reported with li-ion lights. in series or single cells lights.

apologies for the cautions...

Yes, i am interested - count me in for one please!

I'm interested too!

Make one ot those for me please! :thumbsup:

Go ahead and seem tobe a good idea, another one to add to the family of Barbolight.

Sounds cool

Sign me up please.