I suspect more sizes of 26650 will work than 21700. A long 21700 will probably compress the springs too much and they are double springs so not as forgiving. Also, 21700 might be a bit loose but the fit will be so tight I doubt it rattles. You can be sure if 18650/26650 fits that button top or protected 21700 will not
My NW should arrive today. I will measure tail current and CCT/CRI/DUV of LED.
Can measure Lux/Lumen and let us know how well centered the LED is?
Good luck with it,Good day,Off to work my vigorous part time job! 
Has anyone measured the lumens on turbo yet? Of the neutral white model specifically?
Yes, in post #1549.
Received my nw today got 9.15A and 235,000kcd @10m using 26650 Shockli 30A 5500mah 4.19V.
+1 to all of that.
I got mine yesterday, actually more impressive than I was anticipating. Props to Astrolux and Banggood on this one.
Yes, its status has changed yet again. A few days ago, the “Pre-order” label and count were removed and the grayed button was again active, but out of stock if you tried to add it to your cart, but I see that it’s now back to a disabled preorder status. I don’t know what this means, if anything, but Banggood seems to change it occasionally.
I ordered mine via the Banggood app, though I uninstalled the app afterward as I don’t trust these types of apps. You might try the app to see if you can still pre-order it there.
:+1: 
Cool. We are seeing some consistent results. (235kcd = 970 meters)
It’s nice to see so many people really testing their lights with amp draws and lux meters, etc…
I was about to say the same thing - this light is incredible!Furthest throwing torch I own!I have BLF GT Mini to compare it to - FT03 destroys it by ease!I think it throws 900m ±.Insane flashlight!Insane deal for only 30$ ! I am overpleased 
My CW GT Mini measured 769 meters, so about 200 meters less than this NW FT03.
Only 26% more throw than the GT mini. Still amazing considering the price and it should be insane when dedomed. Has anyone found out the exact PCB size?
Edit: just realised it’s a NW so it should be a bit more that 26%. Also, it was measured by two different ppl.
135kC vs 235kC isn’t 26%.I own both Ft03 is far better Thrower. Both mine are NW
This may be a redundant question, but we (understandably) can’t see the exact setup in the photo and I’m wondering how most people create a low-resistance current shunt across the tail that provides fairly accurate results. What do you use?
So with 235kC it destroys Catapult V6 with ease 30$ it’s just insane deal!
CORRECT. The difference is 42.56%
If someone dedome the sst 40 it will be interesting to see the results