Thank you very much. I uploaded photos on a different website.
Now it’s all right.
Looking at the below discharge graph, this 16340 has more capacity at 5A than at 2A? Something doesn’t sound right.
Anyway, I ordered a few from illumn to try.
The fact we cannot understand something does not make it impossible. Such phenomena can happen. For example:
Source: HKJ's comparator and review of Samsung ICR18650-30B 3000mAh (Green) @ lygte-info.dk.
In general, I’d just ignore mAh readings. Wh is a much better indicator of capacity.
My 16340 800mAh Vapcells still haven’t arrived even though I ordered them on April 4th. Once they were returned by customs and sent again.
Capacity is the whole are below the line in this graph not just the finishing point.
The Vapcell 16340’s I tested at 3 amps seem to follow the supplied graphs pretty well. It’s the best 16340 I have tested.
I was referring to the actual capacity values listed in the table directly below the graph.
Sometimes you get higher capacity at higher discharge rate because the battery “doesn’t get discharged completely”. This is why energy is a much precise way to measure the real capacity because it can be translated directly into lumens/hours.
I concur energy is a more precise way of measuring absolute performance or delivered energy.
The area below the line curve is delivered energy, which is the integral of the voltage curve over the delivered capacity for the given voltage range and discharge rate. Or something like that, haven't touched formal maths for ages.
When the battery is discharged to 2.5V, the discharge capacity of large current may exceed that of small current. But there won’t be much difference. 
Nice test， :+1:
sincerely apologize for the delay in shipment.
Hope to be in your hands as soon as possible.
Thanks you very much 
Why is that?
energy is More important。 AH*V=WH
Because of temperature induced chemistry reactions inside the cell. As a general rule heat improves the performance to some extent, chemistry dependent of course. While lots of modern cells do not show increased capacity at larger discharge ratios, increased heat reduction in internal resistance is common.
:-)
That was my thought as well. I have seen li-ions that were cold and run under a 3 amp discharge actual slightly increase in voltage as they were being discharged because the internal heat from being discharged warmed the cell which gives it the ability to provide more current. Since the discharge current is constant the cell doesn’t have to work as hard warm so the voltage goes up slightly. A warm cell will give more capacity in a discharge test than a cold one in my experience.
So do I.
Ordered 2 pieces of 10440 batteries from the aliexpress store. Will check them out
Thanks again for getting us a new type nice battery Dennis.
Got my 16340 cells from Illumn.
Capacity test using 500 mA discharge current on Lii-500:
. 
IR, measured using a DMM and resistors:
Cell 1: 0.21 Ohm
Cell 2: 0.20 Ohm