OT: Based on this excellent review I ordered a pair for my SkyRay STL-V2 from them at 5am "Manafont time" today - the order status changed to "processing" after less than 4hrs and to "dispatched" after 12hrs -> good job!
IMO these are a better choice in STL-V2 over Xtar 2600mAh because these are a bit shorter (and cheaper).
I had to use some force to get Xtar´s in and they were even tighter when body tube was tightened up. From now on I will use these if need to distribute more sets of SkyRay...
Thank you very much HKJ for your reviews. I was doubt when I wanted to choose any batteries to buy before.
Yes, as they said, your contribution in this forum is just... GREAT!!
Sorry to "jump threads" but CT just mentioned SkyRay and ..... well, here goes:
Is my SkyRay 3xT6 worth fixing???? 
:
My SkyRay 3xT6 has been problematic from the start. 
Early on, it would remain on high for no more than a minute or so (regardless of what type of batteries I tried). At that point, it would stay on for at least 10 to 20 minutes at a lower light level but that didn't last very long.
Now, (with newly charged batteries) it's far less bright than any $1 flashlight - again, regardless of the type of battery being used. The switch also seems a little intermittent.
Is there an EXPERT in the group who would consider taking a look at the light in order to advise me whether to bother trying to fix it (or have it fixed)?
I WOULD BE HAPPY TO SEND IT TO ANY OF YOU FOLKS WHO ARE EXPERT ENOUGH TO DIAGNOSE (AND POSSIBLY FIX) THIS BEAUTIFUL LIGHT. 
I bought it based on early advice provided by many on the BLF but it seems clear I'm not the only one who has bought one and had problems. Oh well ... I've also learned (by following the BLF) that problems with many Chinese budget lights are to be expected.
Best Regards,
-KumaBear-
R.MarkSolutions@gmail.com
857-991-7000
P.S. I build, repair and upgrade COMPUTERS. I also have access to lots of great computer components and I'd be willing to do a little bartering.
Hmm.. This really isn't the thread for that problem tbh. It sounds like you just have a driver issue, you can get the more reliable/consistent Trustfire TR-3T6 driver from manafont for only $5 shipped (search for 'triple t6 driver'), then just swap them over, if you aren't familiar with the process there are plenty of relevant mod related threads on here so just read around a little first.
Maybe it's just a loose connection, so you could dissasemble and look for one. I'm sure you'd be familiar with the signs if you repair computer electronics anyway. But if you can't see anything specific I'd just go ahead and replace the driver, it's only $5.
Great review as always.
And wow, these are a lot better then I thought they would be, might even buy some. Now lest us just hope that the market won't get flooded with bad copies like with the old Flames.
Just got an email from Ric that the batteries will be available from CQG from tomorrow. Hope the pricing will be competitive.
After HKJ's positive test on TF 1865 3000 mAh (flame), especially because of the prolonged run-time in flashlights that need more than 3.6V to regulate properly, I ordered two sets from Manafont on jan.14 and received them on feb.2, packed and marked exactly as the ones in HKJ's picture.
I must say that I was disappointed after making discharge tests down to 3.6V on an iCharger 106B+.
From HKJ's measurements I was expecting:
1850 mAh @ 1A and 2100 mAh @ 0.5A load down to 3.6V
I used XTAR WP2-II to charge them to 4.17V, just like I did with some TrustFire 2400 (flame) that I bought recently.
The inferior result for TF3000 was:
cell#1: 1425 mAh @ 1A and 1967 mAh @ 0.5A load.
cell#2: 1111 mAh @ 1A and 1806 mAh @ 0.5A load.
cell#3: 960 mAh @ 1A and 1571 mAh @ 0.5A load.
cell#4: 1006 mAh @ 1A and 1492mAh @ 0.5A load.
Internal resistance was 156-170 mOhm
for reference:
TF2400: 1442 mAh @ 1A and 2015 mAh @ 0.5A load.
(un-prot. from DD, average of 4 cells, variation 1373 to 1503 @ 1A).
Only cell#1 can match TF2400 and cell#3 deliver only half of what was expected. This is really bad. Remember tho that the numbers are not the full capacity but the capacity downto 3.6V.
I guess that after this result, the more expensive Spark 2600 is now back on my wish list as it also should maintain a rather high voltage acc. to HKJ.
Try measuring the battery voltage directly with a voltmeter, when you do the discharge test. You must put the probes directly on the battery terminals. This way you can see how much voltage is lost in you wires and connection.
Thanks, HKJ, the voltage measured directly on the battery is 20 mV less than on the iCharger at 1A. That should not change the result by much. The new cells are really not what I expected.
(I made a fast-clamp, after your model, with thick loudspeaker cable and solid connectors).
My set of four TrustFire 3000mAh cells arrived today.
Straight out the packet they tested between 4.05v-4.08v
1A Discharge from 4.2v down to 3v
Cell 1: 2325mAh
Cell 2: 2153mAh 
Cell 3: 2391mAh
Cell 4: 2136mAh
Well, I am quite disappointed! I was expecting at least 2500mAh from these @ 1A.
Blah. I think it might be time to invest in some higher quality cells, 2153mAh @ 1A is terrible. :(
Does not seem to be in line with HKJ´s testing, they should give a bit more.
Are these from Manafont, do they look genuine? Try to give them a cycle or two and see if they gain any capacity.
I have also 4pcs coming, I will test them and post results when they finally arrive.
I agree, they are not consistent with HKJ's results. It looks like I am the second person to post results which differ from HJK's findings. Inconsistent cells? Perhaps?
I will cycle them a couple of times, but to be honest I don't hold out much hope. Not when they are achieving such a low capacity from the word go. 2135mAh is ridiculous.
Edit: They were bought from Manafont and are genuine - bearing the hologram on the outer packaging etc.
Looks like I have to order a new set of batteries to test.
There is a huge misconception about Trustfire, Ultrafire, xxxfire batteries.
First you have to ask yourself why they are so cheap,
then you go and search for any decent brand new bare 18650 cell made by: Sanyo, Panasonic, LG, Samsung, ....
then you add price of PCB, and top button add-on assembly, color print, PVC wrapping.
The truth is: Trustfire, Ultrafire will find anything 18650 size, and sell it to you.
Recycled laptop cells. Hell why not ? just print as high as possible mAh rating, and unaware people will buy because it is cheap.
I even saw the other day 5000mAh cell :)
That's why you will always get different results in your tests.
If you want good performing cell you will have to pay a little bit more, or simply play lottery hoping that your Trustfire, Ultrafire, xxxfire will perform good enough.
There's probably many fakes as you can buy printed PVCs from Taobao with Ultrafire 3000mAh and so on.
As for recycled laptop cells, that what I was asking in another thread, if the capacities they come are random, how steady (or random) they lose their capacity in time. But not just by self-discharge and 1 cycle a week. How they hold up after 50 cycles, Will they be just fine or they will be "replaceable".
Unfortunately 4 or 6 examples will not be relevant.
TF Flames might not be consistent, but they are a much better bet at the low end of the price range than blue or grey wrapper XXXfire batteries.
They (Trustfire) are trying hard, that is obvious.
People just shouldn't expect some special, consistent good test results, and being disappointed.
Some of the reasons are in my previous post.
SpaceCowboy, I don't remember if I welcomed you to BLF or not. I'm a big fan of Cowboy Bebop. I even adopted a Welsh Corgi because that breed of dog is on CB. I hope you enjoy your stay here at BLF!
I hope we will share some knowledge, experience, and good products for a long time.