Surefire U2 brightness levels

[Nitroz]

Including the low setting. How many levels does the U2 have, 5 or 6?

 

[DaFABRICATA]

6

 

[65535]

6 settings. Less if you mod it and screw up.

 

[Carpenter]

6 levels on mine

 

[hurricane]

6 sweet levels of LED goodness. The U2 was my entry point into flashlights and SureFire ... it does not disappoint. The UB3 will be a much more hardcore version of the U2 ... if it ever materializes.;)

 

[socom1970]

The U2 was my entry point into flashlights and SureFire ... it does not disappoint.

That's a mighty fine entry point to start at. My Milky-Rebellized U2by2 is one of my favorite lights.:D

 

[65535]

My U2 was also my first serious light. Something about the UI and the low-high adjust ability. One of the best LED lights ever made IMHO.

 

[hurricane]

That's a mighty fine entry point to start at. My Milky-Rebellized U2by2 is one of my favorite lights.:D

Thanks ... I thought so too. :D As 65535 basically says above, it does a lot of things really well. While expensive, it's attractive in that it's an all-round performer.

 

[Praxis]

That's a mighty fine entry point to start at. My Milky-Rebellized U2by2 is one of my favorite lights.:D

Same here, definitely worth the wait.

Mine has 10mm reflectors and puts out a nice flood. I would be very curious to compare it with some of the U2by2s that have 12mm reflectors.

Ben

 

[eshishlo]

The number of settings depends on how much juice you have in your batteries. It has 6 on fresh batteries for the first hour on high. Keep draining the cells and keep loosing settings until you are down to 1 after 40 hours of runtime. I was working on some projects at my brothers and was down to 3 by the time I left.

 

[Bullzeyebill]

Lets see,

Level 1 about 6 lumens for 48 hours
Level 2 about 12 lumens for 24 hours
Level 3 about 24 lumens for 12 ours
Level 4 about 48 lumens for 6 hours
Level 5 about 85 lumens for 3 hours
Level 6 about 120 lumens for 1 hour or so

Been awhile since I saw a runtime of the six levels. I only use the level I need for the job I need to do. Level 3 is good for most tasks, close up work, and you won't see the level drop off so fast.

Bill

 

[cbxer55]

I've had mine for over two years. Rarely ever use the high setting. As previous poster said, one through three are usually all you need. AS a result I only change batteries about once a month or so.

I am going to spring for an Olight M20 real soon. It will never replace the U2 though. The U2 is a definite keeper. Shoot, mine still has the original clickie switch after all this time.

Did Surefire ever make a better switch for these? Considering all the problems some had with them.

 

[socom1970]

Lets see,

Level 1 about 6 lumens for 48 hours
Level 2 about 12 lumens for 24 hours
Level 3 about 24 lumens for 12 ours
Level 4 about 48 lumens for 6 hours
Level 5 about 85 lumens for 3 hours
Level 6 about 120 lumens for 1 hour or so

Been awhile since I saw a runtime of the six levels. I only use the level I need for the job I need to do. Level 3 is good for most tasks, close up work, and you won't see the level drop off so fast.

Bill

My Milky U2by2 with 4 Rebels and 4 12mm reflectors (with an AW 18650) is more like:

Level 1 about 10 lumens for 48 hours
Level 2 about 50 lumens for 24 hours
Level 3 about 125 lumens for 12 hours
Level 4 about 250 lumens for 6 hours
Level 5 about 375 lumens for 3 hours
Level 6 about 500 lumens for 1 hour

I used to be able to light up the area directly in front of me. Now I can light up the entire sides of rather large buildings!!!:thumbsup:

 

[socom1970]

Did Surefire ever make a better switch for these? Considering all the problems some had with them.

Yes. The current version tailcap for the U2 is the best design yet. Much more reliable than past versions, IMHO.

 

[65535]

The tailcap was never a problem. SF just didn't have a good check on the lube. Unlubed switches can jam up.

 

[socom1970]

The tailcap was never a problem. SF just didn't have a good check on the lube. Unlubed switches can jam up.

Sorry... I didn't know that. I knew lubing them helped, but I didn't know that was the only problem.

Surefire HAS changed the design of the guts in their clickies, however. For what reason, I do not know.:shrug:

 

[greenLED]

I've had mine for over two years. Rarely ever use the high setting.

Funny that you mention it. I decided a long time ago that level 5 was enough light, and I get longer runtime.

 

[Bullzeyebill]

Sorry... I didn't know that. I knew lubing them helped, but I didn't know that was the only problem.

Surefire HAS changed the design of the guts in their clickies, however. For what reason, I do not know.:shrug:

Some people are liking the new U2 clickie, call an M4 clicky by SF for some reason. I will say that it did not reliably with two of my U2's Lux V version, one that I sold to a CPF with that new switch. It did not function well with that U2 and I sent him an original one. The problem is that very often the clicky does not screw down far enough to make contact with the top of the battery tube and that is because there is a sholder on the battery tube that abuts against the tailcap switch. This abuttment is a flaw, I think, in the design of the U2, but then again may have been necessary with the original switch which has legs than can be compressed not allowing contact with the battery tube. However the legs could always be lifted up as a fix. If the new clicky does not make contact withh the battery body rim then no light, and no fix. Just my thoughts.

Bill

 

[cbxer55]

The tailcap was never a problem. SF just didn't have a good check on the lube. Unlubed switches can jam up.

That could possibly be the reason mine has lasted this long.
I am a regular user of lube, and put a drop or two in the tailcap
everytime I replace batteries. Seems to have worked.

 

[Bullzeyebill]

That could possibly be the reason mine has lasted this long.
I am a regular user of lube, and put a drop or two in the tailcap
everytime I replace batteries. Seems to have worked.

I wish is was that simple.

Bill