Dimlux, do you have any way of measuring the cells’ capacities?
Something like a hobby charger would be able to verify the capacities and you could see if they match up with HKJ’s tests.
I wouldn’t be too worried about the +/- 0.01V deviation though.
Good luck with those cells! 
We hear you. We began getting some reports about packaging in e-mail since a few days ago and we have immediately begun properly packing these batteries, individually.
We have also been told of broken battery cases. We’re wrapping them with bubbles now as well. Let us know if you notice other things like this, we are eager to hear them.
Here is a close up of three of mine.
My TJ18 has had problems with the 26650’s in too - what problems have others reported?
I went back to using 18650’s
now THIS is customer service at it’s best… i hope all the other company can learn a thing or two from fasttech
I have bought some different kinds of Panasonic 18650 and all Nitecore rerchargeable lithium at the BEST price of the market from FastTech.
I am glad to find a fast and honest battery supplier at the best market prices with an excellent delivery time from China.
Regarding the issue of fakes/original, i must say that i trust FastTech because so far i have never run in such issues and because i think that this new supplier wants to keep its name high.
I was very positively surprised that in some cases, FastTech comments on the actual mAh on some chinese batteries which claim and state high numbers on the capacity.
This is honest and i highly appreciate this from FastTech which has already been my favorite site for purchases. Hope they keep expanding their product range so i totally replace DD,DX and maybe Manafont.
FastTech has earned my respect not only for the fast delivery but for their great customer service and very competitive pricing. 
My batts were from FastTech as was my TJ18.
I have tried the TJ18 with just two batts and it works like a charm. I think I’ve got a single junk battery but last night I couldn’t be bothered to test it. It shows as charged but when I put it in in 2cell mode it doesn’t work, take it out, swap it with another and it does. Tells me its a duff cell.
Shame really but I only needed three cells so when I ordered 4 one of those was always going to be spare. Its a shame it is seemingly junk though,
I don't have a hobby charger, so there is no way to measure the capacity. I had planned on getting the Imax B6 but found some mixed reviews of it so I didn't buy it.
Updated the first post also.
I submitted a ticket and received an answer that they had gotten the wrong item from their supplier and I was told that I would get a replacement for the "wrong" battery they sent me. Based on the answers in this thread and the fact that I have no tools for measuring capacity I will assume they are real TrustFires.
I received these last week… Winder why the different wrappings?
I noticed they have two TF 26650 listings. Both appear to be protected; the black ones are slightly cheaper. I ordered the regular flame wrapper ones, as those are the ones people have been talking positively about.
How about these? Are they fake? ;)
Oh no! Not an UltraFire look-a-like! I wouldn't touch them!
-Garry
Because of this, I'll avoid Trustfire flame 26650's too. I'm glad we have Kumabear, but the proliferation of fakes in the 26650's is unfortunate for those in other countries.
Pictures hadn’t even crossed my mind, I’ll put some up and I’m going to run another charge/discharge to see if the numbers are better after I’ve fixed my hobby charger.
Thanks TNG!
-Garry
On the other hand, the normal 18650 2400mAh TF Flame I got from FT really shines.
It got around 2440mAh discharge down to 3V (would reach 2500 going down to 2.7V), and to top it off even maintain higher voltage throughout 1A discharge against unprotected Sanyo 2600 (also from FT).
Are Sanyos Q41A/Q42A? These is strange.
I received the Trustfire 26650 from DX. They look the same as the right one in the picture. The top has extra large vent holes.
The batteries are put against the IMAX B6 charger. First I discharge it right out of the package. The remaining capacity is +/- 3000mAh. Not bad.
I charge the 26650 to the maximum. Then with 1A discharge I get 4016mAh. With a further discharge of 0.1A I manage to squeeze another 280mAh out.
A total of 4296mAh capacity. Not the same as the rated 5000mAh but in line with the other brand 26650 cells. The Trustfire 26650 looks legit to me.
I received a pair of the black Trustfire 26650s from Fasttech this morning.
Charged them to 4.2v, rested them for an hour, then did a 1A discharge test on one down to 3V on an imax B6.
Final score - exactly 2800mAh. Not very good.