18650 rechargeable Li-Ion battery cells

18650 Li-ion battery cells are a widely used and standardized format for rechargeable lithium-ion batteries. Named for their dimensions (18mm in diameter and 65mm in length), these cells are known for their high energy density and long cycle life. They find application in numerous devices, including laptops, flashlights, and electric vehicles, owing to their compact size and reliable performance. 18650 cells are prized for their portability, efficiency, and versatility in various power-hungry gadgets and systems.