The L6 is running 2 series at 8.4V to supply power to a Buck driver where voltage is reduced to a 6V emitter.
The DQG Tiny is a 7 series emitter light that uses a Boost driver to amplify the 4.2V cell to match some 21V needed by the emitters, as such the Boost circuit pulls considerably more amps from the single cell.
Gotcha, I figured that was the case.
Alright then, what cell is the one recomended for this light then?
Good question.
I plan on trying it out with Basen, Efest, Powerizer LiNiMnCo, King Kong Gold, and (ran smack out of ideas, whatâs the latest and greatest 26650 yâall?)
Liitokala
I had no electrical problems using this cell (5200 mAh version). But due to the length of the cell the tailcap makes only about one and a half turns when screwing down. Itâs solid nevertheless.
What about the KeepPower 5200mAh 26650 IMR Flat Lithium Battery Max 30A - BLACK ?
Damned, DQG Tiny 26650 III sold out at this moment :rage:
NW version seems still available
âIn stock, usually dispatched in 4-7 business daysâ
In MHANLEN´s review the ThorFire 26650 battery fits nicely. Those are good budget cells (unprotected!) that also work flawlessly in my L6 and S70âŚ
Still waiting for a hi CRI version (Nichias?!?) of this lightâŚ
K.
Got my DQG a couple days ago and Iâm impressed. This is my first 26650 light. The output and size are quite nice and it feels great in the hand. I donât think Iâll EDC it thoughâŚ. 26650 cells are just too heavy for my pockets.
For modding, I suppose output could be significantly increased by replacing the XPG2s with XPL HIs. I donât think Iâll bother though as the light is great as-is.
Have been looking at this one as a replacement to a Klarus G20 which I stupidly lost!
It looks like a great light, but the lack of USB charging and no strobe is a kind of pain.
Doesnât look like anyone makes a 26650 cell with built-in USB charging yet either 
I think Iâll hold off for a while to find a G20 replacement, this one looks very close, but not enough to make me buy :\
Tagging to follow
Really donât understand the desire for charging a Li-ion cell inside the light, worst possible way to do it, canât monitor temperature and youâre trusting a very very cheap charging system to get it right. Iâd much rather use the inexpensive XTar Rocket charger at 2A so it doesnât take so long on the big cells. There are places that convenience is an inconvenience, using a cheap built in charger could be one of those places. Seems dangerous to me.
If youâre travelling with a backpack, carrying another item is inconvenient.
Convoy BD06 has built-in charging but itâs less then half as bright - not dim either at 1000 lumen.
However reflector and usb charging do add up on the light size. Whatâs really impressive with the DQG 26650 is itâs very compact size.
Iâ ve seen small 18650 chargers powered by USB which also serve as powerbank.
Btw 18650 cells fit in the DQG (with adapter), even protected ones. Donât know though whether cells with integrated charging fit.
Liitokala Lii100 - can often be found for less then $3.
https://www.gearbest.com/chargers/pp_272183.html
If youâre not charging at 2A then overheating and explosion isnât such a big risk 
When Iâm at home and I can, I charge my lights with the cells in a good quality charger. But the convenience of being able to charge from a USB socket is huge as I use my lights for camping/sailing/cycling and other outdoor activities where I donât have access to a AC source of power.
Yeah, I already have a couple of BLF A6âs with USB chargeable UltraFire 18650âs in them, so the BD06 doesnât really give me anything additional over those - I was really hoping for much brighter light using a 26550 to keep the runtime higher.
Since my original comment, I also noticed the Acebeam EC60 which seems to tick more of my boxes. Much throwier light too, which is kind of what I was missing with the G20. âonlyâ 2000 lumens, but the throw looks much better.
I guess Iâll probably end up with one of each, such is the way with these cheapish lights, you end up collecting them all
So do you these protected keeppowers from aliexpress would work in turbo mode?
Donât know for sure. This seems to be an older batch (Version 2015) and at least the 2014 version was too long for this light. 2016 should fit but donât know for 2015. And they donât say anything about the trip current (when protection kicks in), this should be 10 A which is sufficient.
Edit:
found some older posts which said the 2015 version is already the shorter one.