Purchased, thanks freeme!
The same way you do with a TA Lumen Tube calibrated with Maukka lights. My lumen tube is within 2 lumens of both calibration lights
Okay, I can’t keep track of who uses what. (unless it’s in their sig)
Did you bypass the springs? After 30 seconds thats still a good result NW tint should be a little down on output vs the cw.
What’s everyone’s opinion on using 21700’s in this light as I’ve heard they will damage the springs?
My luxmeter shows 125.000 Lux and my ceiling bounce shows 4541 Lumen for my neutral white (5700k) FT03 XHP50.2
(both may be 5 to 10 seconds after start, using a unprotected Keeppower 26650 with 5200mAh).
For my FT03 with SST40 neutral white (5700k) I got 190.000 Lux and 2306 Lumen.
Greets
Carsten
125kcd is 707 meters
190kcd is 871 meters
Both numbers are a little on the low side because the KP5200 is a pretty weak battery (high capacity plus old chemistry). It’s a safe battery, though. Performance is still good.
Your lumen numbers are too high. You might want to adjust your numbers down by around 25–30. That should put you in the right ballpark. Ceiling bounce can vary a lot as far as measuring lumens.
Interested, can I please have the coupon code. Thank you!
No bypass. I think I’ll leave as is for this light as it still can last around 5 min Turbo. I’m pretty happy with it.
Made a small montage comparing the FT03 SST-40 and the XHP-50.2 beamshots from the video posted by d_t_a credit goes to him for the video
XHP-50.2 on the left SST-40 on the right
BTW… TinyPic is shutting down! 
hello guys,
I received my FT03 5700k as well, the disturbing thing is when I unscrewed the head and on the PCB it shows SST40, I paid for xhp50.2
I don’t know how if this is really xhp50.2 ?
can anyone check if theirs was the same ?
On your box does it say XHP50.2 or SST-40? It’s possible banggood mixed up your order. It’s your chance to get a free XHP50.2 version if they did make an error
Can you show us a picture?
oh my box does say xhp50.2 5700k
This is SST-40
Note the 2 lines in the white part.
Just had a look at my XHP50.2 version and it says the same thing on the MCPCB. They’ve used the same one and placed a XHP50.2 on it.
Here is 50.2 in a smaller light.
Note that the flat sides of the led are yellow and not white.
Yes, mcpcb are the same since both leds have the same size pad, 5050 or 5mm x 5mm.
Hello JasonWW
Thank you very much for showing me the difference! I guess I can rest now that I know mine is a XHP50.2
Here’s my screenshot:
P/s: thank you to Freeme! for this awesome group buy!
Hi Jason,
I don`t think that my lumen numbers are to high, I took my Sofirn SP33 on high (980 Lumen) as reference.
I got those Lumen numbers (5 seconds after start, not 30 seconds like ANSI standard !!!):
Sofirn SP33 Turbo: 2342 Lumen (26650 Keeppower, unprotected 5200mAh)
Sofirn Q8: 5019 Lumen (Samsung –30Q)
Sofirn SP70: 6991 Lumen (Shockli 26650, 5500mAh)
Olight X7R: 10.576 Lumen
Wuben T90: 11.186 Lumen (Wuben 18650 protected, 2600mAh)
Haikelite MT40: 8604 Lumen (Samsung-30Q)
Greets
Carsten
I would like one please.