Hello Robert,
The shipping was quoted based on the starting weight of 2Kg from Fedex .You could take 40 pcs within the same cost .
Thank you. I understand that! I have no use for 20 or 40 pcs.!We discussed this last night through several emails!
Unfortunately for people like me who want 4, maybe 8 batteries, your product along with shipping cost is NOT feasible for people in the USA.Just the way it is,no fault of yours.
I would have liked to try a few. It appears you have a good battery[verrry similar to 30Q!] but at too much of a TOTAL cost for the average flashlight guy in USA!
I can get 30Q and other batteries right down the street from me w/ NO SHIPPING COST. I am grateful for that.
That sounds a bit like the woman who buys 4 fur-coats in a sale and tells her husband she has earned $4,000 today 
EDIT: but the batteries look fine! Thank you HKJ!
So, it’s a re-wrapped samsung 30Q, which we buy all day long at 5 to 6 dollars qty 1 at a time.
I wonder why everybody says 30Q, it is not the only cell it is very close to (I do not know the correct answer).
It is strange because the voltage tracks VTC6 pretty much identically, but it just looks like the internal resistance is a tad higher so the voltage sags a bit.
That is True after going through ALL your 18650 IMR batteries on the comparator.
The Only other Two[2] that mirrored it was the Efest IMR 18650 3000mAh [Purple] 2016 and the Keeppower IMR 18650 NH1830 3000mAh Black 2016.
I would say it matches the VTC6 fairly well.
It does,but not quite as well as the others I have mentioned,the gap w/ the VTC6 has a little bigger advantage/separation on the voltage curves. While the aforementioned are basically on top of each other for 3a,5a,7a,10a and 15a. :sunglasses:
The 30Q matches very good, but the Vbatty is a bit better at end of the discharge. The VTC6 has lower internal resistance, that can be because it has been on storage for a shorter time.
I believe it is difficult to decide which one matches best.
Thanks HKJ. You inspired me to read and learn more about the other graphs you do in your review. I did notice the better “End of discharge” for the Vbatty VS. 30Q.
I do not have the understanding/knowledge you have. I am just basing what I see in the voltage curves. Now I can expand my horizons!
I am hoping Illumns or another dealer here in USA will stock them! It will be nice to do my SIMPLE run time/voltage tests on them.
I would NOT notice the output difference in my single modded throwers whether it be HG2,VTC6,30Q OR this battery. They are ALL very good batteries,it is the TYPE “A” personality that wants a little edge, regardless of how unnoticeable by eye and insignificant on paper!!! lol!
The cell tracks perfectly with Samsung 30Q, but got to be a better batch with a bit over 100mAh more capacity
The shape of the curve is slight different.
The shape is the same, but Ri is different.
Thanks for pointing that out. I prefer to have it BETTER in the beginning. I change my batteries every 15/20 minutes for my single cell modded lights.
When I get home the voltages range b/w 3.75/3.85. They never get low, would never drain to a point where Vbatty would have a slight advantage ~ 3.2V!
I am no authority on lithium ion cells I am just a lowly technician. However I am very curious and have been for some time now and you guys seem to be the people to answer.
Please correct me anywhere that I am wrong as I said I can fix or build anything, I am just beginning to learn how important the differences in our choice of cells really is.
With most things being pretty much equal i.e. contents of the cell itself, materials used and if it is unprotected then there is very little left that can be changed. 30q as an example only, if another company wishes to compete with that cell there are only very small variances that could even be possible. If there is no electronic control and I build a cell with the same or as close to the same materials as a 30q is manufactured from. They will appear even in tests to be the same cell.
I guess the easiest thing to ask is just how much can be changed in modern 18650 cells that could make them better?
Again please pardon my ignorance, these are the the last pieces of the puzzle that I need grow and expand my mods. My dad was a first class engineer but passed away before teaching me all I would need to know about electricity.
I have a question HKJ!
What is Ri?
A lot of people is working on that, small difference in the composition of the chemicals can have significant impact on cell performance.
I added images of the cell tops to my above post.
That is internal resistance, sometimes you write IR for Internal Resistance, but above I swapped the letters (that is also a legal way to write it).
They could be getting drained lower then that. When the load is switched off the voltage recovers some. If you have a opus charger or liito 500 run a plain discharge cycle. Opus goes to 2.8 volts come back to the charger 30-60 mins later voltage will be 3.3-3.4 and worn cells even higher. On my 30q drained to 3.0 under load in another device with 3.0 cut off recover to about 3.27-3.3 with no load
It actually begins to recover as soon as the load is removed. Watch the opus go from 2.8 to 3+ 30s later when it updates the voltages. Every 30seconds it updates
Look at HKJ graphs when he stops a cell because of tempature you see the voltage recover instantly. So you are going lower. Nothing dangerous though. 2.5 is the common cut off. Some lg cells are rated to 2.0 hg2 spec sheet goes to 2.0 to get the 3000mah rating
I understand that once the load is taken off the battery will rebound. So maybe they were @ 3.69V/3.79V then recovered to 3.75v/3.85v by the time I got home. Still no where near ~ 3,2v where the graph shows Vbatty w/ a little advantage.
My point is I NEVER need to drain the battery that low because I LOVE MAX OUTPUT! Therefore I change the battery before it is close to being depleted [as stated above] so I can enjoy max output! :sunglasses:
In addition, there is probably a GOOD chance my batteries will last longer when they are not drained so low. In fact it has already happened w/ many of my batteries that are 4 years plus and still going because I NEVER let them go below 3.60V and mostly charged b/w 3.65 and 3.85v.