This looks like the best high capacity 21700 now. A bit higher capacity than the LG and Samsung offerings but with significantly lower IR (more available energy at 5 to 10A).
Any info on the cell? Was there some talk about vapcell using Tesla cells?
I have this cell. It is the Samsung 50G. Problem is it has a recessed top so won’t work in regular chargers or flashlights without a spring at the positive terminal.
This looks quite promising. The best 5000mAh 21700. Unfortunately, at 15A, it heats up more than the tesla ones (purple) tested by Henrik in 2018. Agreed that the characteristic of the discharge curves look pretty similar to that of Vapcell 5500.
Many chargers on the market have raised contact plates, which can charge the Samsung 50g. However, a few chargers can charge Tesla 21700 5000mAh battery because of the large positive depression
I also use this 50G battery in the flashlight. The positive electrode can contact well and the endurance is excellent
Since it’s a bit difficult to ship bare batteries to my country, I chanced upon a local seller here that has this Vapcell G50 at a reasonable price, so I got a few.
I just got the batteries a few moments ago. But I’m wondering if these are genuine or not.
I took some pictures and measurements. I am now loading the battery to my MC3000 to test capacity.
The characteristics (dimensions, weight) seem to match the findings above…
how it looks: (seems to look quite similar, although maybe someone can point out if there are notable differences from a genuine 50G)
diameter: (~21.1mm)
weight: (~69.7g)
AC IR measurement (YR1030 tester), from shipped condition: 13.3mOhms @ 3.58v
even has a Samsung type of date code visible underneath the wrapper:
Also, the “scratch me” authenticity sticker reads “Scrstch me” — but on closer checking, the picture HKJ posted above also reads “Scrstch me” — so it’s the same typo on the genuine Vapcell G50 sticker.
BUT there is 1 glaring issue:
it does NOT have a recessed top like what a genuine Samsung 50G / Vapcell G50 is supposed to be:
So, is this possibly a fake Vapcell G50?
(I’ll probably be able to have a more convincing answer after I do a capacity test)