Quantity: 50 Lithium ion 18650 batteries. Brand: Samsung Markings: ICR18650-26J M SAMSUNG SDIEN TGU1 Nominal mAh: 2600 Extracted from an ebike battery. 49 of them had the tabs removed and fit into their original plastic shell. 1 still has a tab on it. I charged 47 of them to 4.20 or 4.19 volts in 2019-2020 and they sat in a box since them. I tested these and they all read 4.10 volts. 3 of them were never charged and read 4.04 volts.