What lights run great on 17670's?

[roymail]

Not all lights that use 2 x CR123 primaries are made to operate properly on a single 3.7v 17670. And, the opposite is true from what I've read so far... lights that run well on 3.7-4.2 volts cannot always operate on 6v.

So are there some lights that will run well on both? Is it possible for them to run "in regulation" using either a 17670 or 2 x 123's? Thanks.

If this should have been posted elsewhere, I apologize.

 

[RecycledElectron]

The Romisen RC-F4 works well on a 17670. I don't know if the driver runs in regulation with it or not, but it works great. Due to varying tolerances, some examples will not accept the 17670 until bored out with, I believe, a 11/16's drill bit. Some accept unprotected 17670's when you get them, it's just the luck of the draw. All have to be reamed a little to fit AW's protected 17670's.

The RC-F4 puts out about 125-135 lumen according to tests and makes a good walking light. On a AW protected 17670 I get about 2 hours and 15-20 minutes of light before it starts dimming.

The current draw is about 600 ma, it doesn't matter whether one uses 2 RCR's or one. I don't notice that it's much brighter on 2, though it is brighter.

There was some talk by Olight that the new tactical versions of the Olight T20 Q5 would be engineered to use the 17670 along with the standard CR123 and RCR123's, but I don't know if that occurred, they're new and haven't been tested. MattK at Batteryjunction.com could enlighten you on that.

One reviewer reports that the Solarforce T-7 runs well on a unprotected 17670, he could not fit a protected one in the light.
http://www.lighthound.com/index.asp?PageAction=VIEWPROD&ProdID=3357

Hope that helps.

It's pretty expensive to engineer a light with both boost and buck drivers, most lights that run well on 3.7 volts are either engineered that way or it's an accident. Fortunately a lot of LED lights that are designed to run on 6-8 volts will run in direct drive on 3.7 volts, but it's not regulated.

 

[jbviau]

The 3.7-6v Wolf Eyes LED drop-ins work great (i.e. run in regulation) with either 2x123As or a single 17670. I use a G2 host with them (fits a 17670 perfectly).

 

[Penguin]

My Surefire L4 runs just like it's on 2x123's when I pop in a 17670. Almost identical runtimes! The Surefire U2 is the same

 

[Lighthouse one]

Streamlight Scorpion..only a bit dimmer on the 17650. Mod with an SSC seoul and it's a great light.

 

[cave dave]

Well you really need a regulator that has buck (increases voltage) and boost (decreases voltage) capabilites for both 6v and 3.6v to be perfectly regulated and most manufactures will choose one or the other. However many buck regulators perform well as the light is in regulation from 4.2 peak voltage down to the Vf of the LED (3.6v or so), then it drops out of regulation after that and gives a nice long "moon" mode as it declines.

- HDS EDC performs perfectly as it is designed for 3v to 6v.
- UK 2L eLED perfoms very well.
- G2 with Lumens factory incandescent Bulb is thrifty Hotwire rechargable alternative.
- The P3D does not perform well on Max.

Most of the popular lights that perfom well on 17670s will have runtimes posted with those batteries somewhere on CPF.

 

[matrixshaman]

Novatac with the HDS 2 x 123 tube (just don't put 2 x 123's in it with the Novatac or )

 

[Chronos]

HDS EDCs with the proper battery tube.

The McGizmo 27LT and 27LT-s.

Surefire KL1 with E2E/2x123 body/Peu Pineapple body.

 

[Bullzeyebill]

KL5 (L5) and any light running PWM and Lux 1, III, Cree, Seoul, Rebel.

Bill

 

[gunga]

Olight T20-M/T (new versions) work very well with 17670 and CR123s...


Nice lights, good throw.

 

[:)>]

HDS EDCs with the proper battery tube.

The McGizmo 27LT and 27LT-s.

Surefire KL1 with E2E/2x123 body/Peu Pineapple body.

I can't believe that I did not think of the 27LT when if first read this post. I thought of the HDS EDC lights and the fine example of a Seouled HDS EDC B42 w/17670 tube on the Marketplace

 

[woodrow]

The tiablo ma6 runs well on both 123's or 17670's.