that the samsung you used? : http://www.ebay.com/itm/Original-Samsung-INR18650-20R-SDI-3-6V-2000mAh-Li-ion-Rechargeable-Battery-/261134798326?pt=US_Rechargeable_Batteries&hash=item3cccd8cdf6
Yes, they are the ones 
the price is good.
Its the 1600mah AW’s <15A discharge. And tested above 15A
Samsungs are great cell, i wish you could buy them new rather then pulling them
or buying pulled cells off Fleebay…I’ll stick with the AW’s…
The samsungs that Enerdan sells are new, not pulled cells.
Good to know…Thanks
@nofearek9: I linked them in post #5.
@DarkSide: See post #5. I got the ones from China, they are genuine and not used. And Enerdan wont sell used cells. ;)
Do u have a graph with 5c discharge?
This is an impressive little cell…. It just doesn’t sag too much like you expect it to from a 18650 cell.
Do u have more graphs available ? Just wondering.
I have got one last week, indeed a nice currentdeliverer.
And it reaches the rated capacity! The most cells are at least 100mAh overrated.
I've got almost anything from 1A to 20A but most is not really interesting. Up to 10A you are better off with the Panasonic NCR18650PD. And from 10A up the Samsung 20R is the way to go. I can think of 2 cells that might be better but those are exclusively used in battery packs.
Can u post 2c for comparison purposes. I’m not familiar with the Panasonic’s but I’m pretty sure at 2c they will sag more than these.
Sorry to keep asking for graphs.
These are not IMR but INR for low discharge the 3.4ah is good but the 2.9 is better and sags less
2C is a wide range. ;)
2C is 5.8A for Panasonic -PD, 3.2A for AW IMR 1600mAh and 4A for Samsung -20R.
So here are 5A and 7.5A.
At 5A, there is no real surprise. Up to 5A I'd say stick with the Sanyo -FM if you already have them. If you need more runtime, the -PD.
At 7.5A the Sanyo -FM would be beyond specs and gets hot. We dont want that, so no graph for that cell.
The three cells have a very similar discharge curve with the -PD having a lot more capacity. In this graph it was only discharged to about 2.9V. Discharging it to 2.5V would give about 800mAh more capacity.
/edit:
Ignore kreisler, he is just trolling. :P Protected cells are for girls btw.!
Why do you recommend the Sanyo FM? Because it is the better choice at 3A…?
In the 5A and 7.5A diagrams the PD is the best…?
In the last third the -FM has a higher voltage than the -PD. But you are right, I should have said it differently and therefore edited my post. I'll explain:
It all depends on the light. I have single cell lights exclusively. Now if you are like me or mainly use single cell lights, the 3A and 5A discharge curves are those that matter.
Triple or quad XPGs might pull up to 5A while still having a relatively low vF of about 3.2V @ 1.5A if I remember correctly. In the last third of the discharge curve, the Sanyo -FM is still well above 3.2V while the -PD isnt. Also, most people already have Sanyo -FM based cells while the -PD is rather new.
So if you wont draw more than 5A from one cell, the Sanyo -FM is still great.
These tests were all made with unprotected cells, right?
I looked a lot at the discharge curves from HKJ and recognized that protected cells have lower voltage curves, it seems they are just shifted parallel a bit down.
Yup, all unprotected. Protection lowers the voltage quite a bit due to more resistance. The more amps you draw from a cell, the higher the difference will be.
Will the Samsung cell vent when abused? As in, will it be have like an IMR? Thanks