Most Popular Lithium-Ion Cells for Custom Battery Packs
The third type of lithium-ion cell that is popular for use in custom battery packs is the 21700 cell. This type of cell is similar in size to the 18650 cell, but it has a slightly larger diameter and length. ... Manufacturer. Format. Model # Battery Voltage and Battery Capacity. LG. Cylindrical. 18650-F1L. High Energy, 3.6V, 3.35Ah. LG ...