Its using a Fet on direct drive on the highest output Sofirn got almost 7000 lumens with okay cells from the SP70. I would personally just use 26650s makes the most sense its made to use 26650s they should give best performance and run times.
Ahh, ok - I got confused there, and missed something. Must have been earlier in this thread about the FET based driver.
Interesting if they got ~7000 lumens and list it at 5500 - wut? A manufacturer under spec a light? No....
I think the 5500 lumen figure is old when they where using standard non high drain cells.
I'm all discombobulated over the specs. Since I don't think Sofirn could do it, we need one post somewhere that summarizes the details. Looks like Lux-Perpetua has the inside contact, so maybe post #4 could be edited up to reflect the current status as we understand it?
Just an idea....Hhhmm, ok reading more on this, wow - the UI is very close to NarsilM/Anduril - I like it!
-> single click ON/OFF, press&hold to change modes/ramp, dbl click for turbo, 4 clicks for lockout. I like you can turn the light ON/OFF from the side switch, and not only the tail, but they call it being in STANDBY - wonder what the parasitic drain will be then.
Their reasoning was they made the specs according to what someone would expect if they bought the “kit” that included batteries. Their included batteries at the time happened to be pretty mediocre. Between possibly using better springs and possibly sourcing better batteries they may need to update that number to whatever it measures with the latest “kit”
Yea the specs are all over the place. The only major change we had was for the slight OP reflector instead of the SMO. Maybe they will still make a SMO who knows.
Also i dont know if they have confirmed what LED bin/tint they are using we had some talk about it.
I would like to see a group buy started with a discounted price for BLF members. I think we could get a few hundred members on board.
Sofirn’s 4000mah 21700 flat top cells fit, but just barely. The springs are fully compressed. So they are not officially recommending them. I imagine some brands will fit and some won’t.
From post 1199.
I insisted on these points as I find them important.
We have not found out the parasitic drain. No one outside of Sofirn has tested the light yet. I can only hope it’s low. The S70S was quite high, but at least there is the tail switch to cut all power when storing it.
Wow, this turned to be a real BLF special, not just a slightly better S70S, as the original K70 was intended. I'm very impressed how Sofirn listened to us on this one. I know it's taken time, but look'n at the performance and UI, seems like a winner, best 2 26650 cell stock light out there.
Details I'd be concerned about are PWM rates, parasitic drain, efficiency, etc. If this is a somewhat new FET design, not sure if they have lower output secondary channels, etc., like we do in our BLF drivers. Not sure if anyone knows this stuff yet, or again, I'm just missing it.
A lot of time was also spent designing it for good heat dissapation.
Unfortunately, we don’t have real specific details on the driver design. I don’t think the average buyer needs those details, but I know certain BLF members want to know. The problem is I’m communicating through Tracey and it’s very hard for her to translate this information to and from their engineers.
I was really hoping we would get a sample light to run through its paces, get real specs, get driver pictures, beam shots, inspect for any issues, etc… but I’m not sure that will happen.
This isn’t really a true BLF light (like someone here designing the driver), it’s more a Sofirn light with BLF influence and suggestions.
Well, at least they are listing it as the "BLF SP70" for now, and like you said, there's a lot of BLF influence. Yea, sure would have been nice to get a sample or two out there...
I think they were supposed to call it the Sofirn SP70 - BLF Edition. Not the Sofirn BLF SP70.
Is there going to be a group buy or is the annaversary going to be the lowest price?
Edit- I re-read the OP. 
The last I heard is that the BLF price would be much lower than $72, but I’m still waiting to see what Sofirn has decided.
I also don’t know how they would give certain people the discount price. Aliexpress and Amazon does not use coupon codes, afaik. It might be similar to the Sofirn Q8 where you put it in your cart then contact them with a “code word” to get the discount price. I’m sure they will say once they have it all worked out.
It is still a ways from actually shipping.
I ordered mine earlier today - $61 after the anniversary discount, added a Q8 holster to bump it over $65, then took the $6 store coupon 
.
Yes, and their High Drain 25A batteries are here. Pictures are not ready so it shows the older black ones. The HD are button top.
So $56 for SP70 with anniversary discount and $6 coupon, I wonder if BLF price will beat this?
I am guessing we where aiming for around $50 USD. I have no idea what Sofirn wants to make on it.
If you buy it at this price its $10 USD more than the Q8 group buy price. From the factory it should be at least 2000 lumens brighter.