Just to mention that I got some of these cells from DX and they are now selling the same old fake 2400 (not the good 2400 flame) wrapped in this new shell. All of the 4 I've tested are actually 2000mah at 1A discharge. Still decent quality for the price, but definitely not as good as the ones tested at the beginning of this thread.
^ Think you got the wrong thread. This one is for the 3000mah TF cells.
That's what I got. Sorry I think I was not very clear: the 3000mah trustfire on DX now are actually 2000mah, exactly like the new 2400mah trustfire on DX, which too are 2000mah. In fact I suspect that they are the same cell, as they perform exactly the same in the tests I've done.
Oh sorry. I thought you were talking about the 2400 flames. The 3000mah ones actually costs a good couple of bucks extra. So that kinda sucks harder. Better to get the 2400 flames and save some I guess. I heard DX acquired a battery tester to ensure quality of these cells from next batch. Hope that would stop selling of these fake batteries.
Some guys on DX forums have said that DX has tested some cells that's why they area saying 4000mAh and not 5000mAh for Trustfire the 26650 cells. Which apparently is some client lure text as the same 4000mAh "real capacity" text can be seen on Taobao.
Regrading fake cells, it's not like they buy from vendors that knock on their door and receive what they have in their bags at the moment, they know very well who sells which and what. DX to be able to have such low prices has to deal only with major distributors for longer periods, they cannot buy from here and there.
Sorry guys, I posted them to wrong thread for some reason :|
https://budgetlightforum.com/t/-/4092#comment-142170
Got 2 sets today.
I found this thread, so posting here where I have previous tests.
First pair was 3,83V and 3,84V
Second pair was 3,85V and 3,86V
Discharged with Imax B6 at 1A from 4,16-4,17V to 2,70V
1st pair battery #1: 2338mAh (at 3,00V it was 2163mAh)
1st pair battery #2 2273mAh
2nd pair battery #1 2265mAh (at 3,00V about 2050mAh)
2nd pair battery #2 2282mAh
Funny. The one thing I especially remember from my 1st set (sold already away) was that they kept voltage very high until the end. These don´t.
There was a 0,2V difference even with pair #1 and pair #2, just by eye after say 100mah of discharge.
Will update but I can confirm already these are not the same anymore compared to first set.
Too bad they turned out to be poo-poo. 
Bottomline:
IMO they are not worth it.
I also got a feeling they deliver less current that first ones, not tested yet (my only DD light is borrowed...)
Going with Xtar 2600´s, once again, back to them...
That's too bad. It looks like only the first batch was good and then their quality took a nosedive. I don't know what they can gain by deceiving customers. Sooner or later the truth will be out as always.
Thanks for doing the tests. I ordered the TF 2400 flames instead and saved a couple of bucks.
I got my good ol' UF-980L back now, will do soon some draw measurements.
Have to top up cells first but I can already say: looks bad....
Ok here we go:
Used Un-protected TF "Flame 2400mAh" @ 4.17V : 3.65A
Used Protected Xtar 2600mAh @ 4.16V : 3.82A
NEW TF "Flame 3000mAh" @4.15V : 3.05A (decreasing more rapidly, than others from there...)
Aaaaargh come on!!
These "3000"s used to be my the ones giving The Highest Amps, not lowest.
First pair got me over 4.00A.
I'm pissed :|