I have found a great diffuser for the SF-11's. I own a couple Tk4A thorfires which are the exact same light as the SF-11.Great little light and much nicer when you add a big rubberized magnet that fills up the odd hole in the bottom of these lights and a 3"+ diffuser that fits like it was made for them .
<< --Something like this ...The beauty of a taller ,basically straight sided diffuser is they aren't glarey like so many wand type diffusers . You can run the light on it's highest setting and look right at the diffuser . I have something like it on a BLF Q8 and you can look right at it about 4500 lumens .Makes for a perfect lantern ...(one reason I never bought the BLF LT1.
On the 4AA lights this slides down onto the light about an inch and ends up with a suction type grip .Made to accept a fake /led votive candle .
These lights have a really nice and low moon mode .The Sofirns are generally a little over 20$
Did anyone else get a 10% coupon for creating an account on sofirnlight.com? I just got three SF11s for a little over $17 each. I can’t help but think of that as a really good deal considering the price of similar lights in the past.
What’s the run-time like on the Sofirn SF-11? I know it probably can’t compare to the bigger cells, but still, they seem like fun lights. Like a mini SP36. I have a lot of extra Eneloops and Laddas I could put to use in one of these.
Found a review by WalkIntoTheLight of the ThorFire TK4A with some data:
Run-time: I’ll break this into two separate categories. The run-time if you leave the light on until it’s almost dead (including the step-downs), and the run-time if you don’t let it step-down and run it continuously on the intended brightness level. Step downs are 3 minutes from turbo to high, and 33 minutes from high to medium. See the run-time graphs below for more detail. It is easy to click the switch to go back to the higher level and override the step-down. I’m a little puzzled why the need for a high-to-medium step-down, because it’s not needed for heat control, and as mentioned earlier Thorfire does not use it as an excuse to list high ASNI FL-1 run-times.
With step-downs: turbo 11.5 hours, high 11.6 hours, medium 12 hours, low 2.5 days, moonlight 1.5 months (I didn’t test this, it’s just an estimate). Note this is with regular 1900 mAh Eneloop batteries. About 25% longer run-times will be achieved using a battery with a higher capacity, such as an Eneloop Pro.
Without step-downs: turbo 45 minutes, high 3 hours, medium 12 hours, low 2.5 days, moonlight 1.5 months. Again, this is with regular 1900 mAh Eneloop batteries.
Thanks for that, helpful review. So on medium it can run for 11 hours @120 lumens. On high it sustains 300, then after 30 minutes it steps down to roughly the same output as medium. I like this idea of a mini SP36. With coupons I can get it from Sofirn for roughly USD15, which honestly doesn’t seem like a bad deal.
I paid $20 for mine at Amazon last May. It’s $22 now at Amazon and $20 at Sofirnlight.com. If you got it for $10, you got a heck of a deal, but Sofirn does frequently have some great discounts
I have a Coast HP14 in one vehicle which is 4AA and decently bright, decent throw. Pretty crappy tail switch which has some reliability issues.
I also have a couple 5.11 XBT A6 lights which I REALLY love for a car/truck light. 6AA, so accepts L91 lithiums. About the size of a 3D Maglite so easy to find, hold, etc. Good brightness, and excellent throw. Fits perfectly in the door pocket of my F150. Unfortunately they were d/c about 2? years ago. At that time they were on close out all over the place for $20-$30 which was a great deal. Good luck finding one now, especially for that cheap.
Looking for something else, I found a Coleman Max.
Looks like a 2D light. With a regular switch.
Not the retro switch in the 525-750 models.
It’s all plastic. Good for electrical work. LED.
I went to install 2Ds and it takes 4 AAs.
Life is full of surprises.
It would be the great diffuser for the Q8 indeed . I have something similar for the Q8 but have no idea even what it is ..I thought it was maybe a holder for a water filter ??? no idea . about twice as tall as it ought to be but works well.
The ones I have for the SF-11 were from the Christmas tree shop . I'm sure I've googled them before and christmas tree shop doesn't sell them any more
The upside is they are exactly the same size as the outside bezel of a C8 and nothing fits a C8... if you added a sleeve they would slide right on a C8 <an easy mod .
Downside is shipping costs or I'd sell a few to members here .
* The rubberized magnet was a cell phone magnet that mounted onto the dash of your car .
<< --Something like this ...The beauty of a taller ,basically straight sided diffuser is they aren't glarey like so many wand type diffusers . You can run the light on it's highest setting and look right at the diffuser . I have something like it on a BLF Q8 and you can look right at it about 4500 lumens .Makes for a perfect lantern ...(one reason I never bought the BLF LT1. 
