18650 Cell

Referring to the 18 mm diameter by 65 mm length dimensions, 18650 cells are rechargeable lithium-ion battery cells. They arestandard in portable, high-performance electronics, offering high-power storage and featuring a lifespan of about 300 to 500 charge cycles, after which the capacity drops to about 80%. 18650 cells are commonly used in laptops, vapes, and power tools.