Sheesh....that's really good. If you use even a powerful flashlight like J12 2200 lumens OTF, it's like taking about 2A with 3 of these. You can do well over 2hrs at 2200 lumens OTF with slightly cool weather. As these are protected cells, no issue at all.
Benckie, perhaps you can try shorting it with your DMM in current mode and see if the PCB's good.
Now I shall wait for 9 XM-Ls with a 80mm head (say Xtar S1 size, it's actually handy) and driven at least 10A (slightly over 1A for each XM-L) with 2 x 26650s. Still would be cool running @ 3500 lumens OTF. :)
Im charging the cell now i was planing on testing the low cut off and how many amps the protecting curcuit can give before if cut off as i feel this is a good one as it simlulates over discharge and a dead short .
Ill see what i can do with my charger to get it to over charge might have to to use nimh mode as all other modes will not let me go over 3, 3.7 or 4.2 volt with out altering the calibration of my charger as it is spot on so i dont want to mess with it.
If people want to chip in some $ to my paypal ? i will pull the protection circuit off and see how many mosfets it has (the more the better) and if there is any thing writen on the cell once finshed testing, sorry for asking but i have already killed a few good batteries and so on for the sake of the forum and money is a bit tight right now.
I'll pitch in a few bucks - worth it to get good info for the cause. Let me know if you get a few more to share the load and send me a PM.
Testing the over discharge protection and it works.
4.15 volt to 2.75 at 7 amp discharge
(charger maxed out at 6.43 amps, battery 3.091 volt)
Data table
Volts vs mAh
Volts vs Wh
Photo's showing that the protection pcb on the battery kicked in
There is a 4 second, 2 mAh delay between my computer and the iCharger with data logging on my computer, but this shows that the battery PCB protection did kick in and the disconnected from the battery reading 0.0 volt as it should.
It does take time for any battery protection to kick in and it often can not be kicked in with very low current draws as i have made this mistake before when testing batteries and have said to protection does not work, when it did it just did not work say at 0.5 amps.
This test is like testing a dead short the battery but slower if that makes sense in a dead short the amps climb high very very quickly and the battery protection kicks in after a short time, but in a discharge test it takes time for the the charger to ramp up to the Maxim discharge for the protection to kick in.
I could of done the test shorting the battery out with a DMM (digital multi meter) the protection would of kicked in sooner but unless i made a video there is no real way of logging or recording to PCB disconnecting its self from the battery.
Ah man, come on.. Just when I was feeling dam good about ordering 2 of these cells from DX, you got to put DX down...
What am I in for getting these cells from DX???
Thanks for the report/review too.. 
I am a team player..
I will pitch in a couple.. Send me PM too.
Ok cool that makes two willing to chip in a couple more to share the load a bit more would be sweet.
Some links to other battery tests i have done, slowly improving i like to think.
18650,s
trustfire flames 2400 mAh
https://budgetlightforum.com/t/-/4522
redilast 2600 mAh
https://budgetlightforum.com/t/-/5025
Hi-max 2600 mAh
https://budgetlightforum.com/t/-/5082
Solarforce 2400 mAh
https://budgetlightforum.com/t/-/4958
Panisonic NCR18650A
I would like to say a big thanks to cehowardGS for the $3.50 USD donation towards this battery test and strip.
Thanks for the review benckie!
I would like to say a big thanks to BetweenRides for the $5 USD donation towards this battery test and strip.
Again good stuff. I asked you in your reveiw of the A8 before you started this thread. What is the overal length of these batteries? Thanks.
Lenght 68.73mm from button top + to base - Width 26.11mm
Their 6.8cm (2.68in) according to manafont and DX. I wonder how these compare in length to the King Kongs (I can't find their measurements anywhere). It is known that the King Kongs are a good fit for some flashlights out there and the trustfire 26650 might be too long for stock fitting.
Thanks Benkie. The reason I asked is whether they would be to long for my JM05. The 2 x King Kongs that I have with a small magnet between them measure 132 mm in length. 133mm would be about all the length that would fit in this torch. 2 x Trustfires would be 137.46mm which would be a no go. The protection is probably what adds to the length. Cheers.
Yes the protection adds 3.09 mm in length.
King kongs INR,s 65.63mm in lenght and 26.03mm wide
From what i can gather the protected trustfire 26650 will fit and work with the TR-J12 and the A8, i think lights build before the protected cells where around might be a bit short.
Now DNF you have to donate to the battery test and strip for all these question's and because you like holdens.
hi, would it be okay to use just 2 of these TF 26650s on the J12 as a long term solution? I'm currently using 3x18650s (TF 3000). No issues here, just that the shorter form-factor is better IMO but I'm concerned about the strain on the batts if I use only 2. thanks.
It should be no problem at all running your flashlight on 2 cells. MF advertise 2 or 3 cells in 18650 or 26650.
Should be no problem, I plan to run 2 to 3 of these in my TR-J12, 3 would be better for sharing the load and give around 2 hours of run time on high, the TR-J12 fairly suck,s the amps with two cell,s