Some of the very best electronic devices depend on rechargeable lithium-ion cylindrical cells as their power source. 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 works with our customers to select the optimum cylindrical battery solution for your device – selecting the battery size – whether, for example, the 18650, the 14650, or the 21700 – and adapting their configuration according to the individual product’s need. The three most common formats are the 18650, 21700 & 14650 models