I will show how to test 18650 battery capacity and quickly find out if they are fake and what is the real capacity of the cells. You can easily do it yourself. Below you can find links of the cells and the rest of the equipment.

Nowadays its hard to tell if the cells you are purchasing are genuine or not, and this is why I will show you how you can check your batteries to check if its a genuine 18650 or now.
I will do a discharge test on Panasonic NCR18650B to check if its a fake or not.

I will do the same test with a LG INR18650 MJ1 cell to be able to compare the results.
I will use a multimeter for checking the 18650 cell voltage.
I will use a digital 35w loader to do a discharge test on a 18650 cell.
This is a recommended step if you want to check if the 18650 cells coming from China are fake.

Product links:

[ Ссылка ] - Panasonic NCR18650b Cells
[ Ссылка ] - 35w loader Tester
[ Ссылка ] - Liitokala Lii-500 Cell Charger and Tester

Aliexpress:
[ Ссылка ] - Panasonic NCR18650B (from where I purchased my cells)
[ Ссылка ] - 35w continuous load tester
[ Ссылка ] - Liitokala Lii-500 Battery charger

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