Some of the very best electronic devices depend on lithium cylindrical cells as their main part. With their impressive energy density and reliable manufacturing processes, these cells are often the preferred choice for high-quality consumer, industrial, and medical applications. YOK Energy work with our customers to select the optimum cylindrical battery solution for your device – selecting the battery size – whether the 18650, the 14500, or the 21700 – and adapting their configuration according to the individual product’s need. The three most common formats are the 18650, 21700 & 14500 models