19680

The designation "19680" is commonly associated with a specific type of lithium-ion battery cell, widely used in portable electronics and power tools. Produced by several manufacturers, including Panasonic and Sony, this battery type is part of the cylindrical 18650 series, where "18" refers to its diameter in millimeters (18 mm) and "650" refers to its length (65 mm). The "19680" variant is slightly larger, with a diameter of 19 mm and a length of 68 mm, offering increased capacity compared to the standard 18650.

These batteries are known for their high energy density, long cycle life, and low self-discharge rate, making them suitable for applications requiring reliable, long-lasting power. They are commonly used in high-drain devices such as flashlights, electric vehicles, power banks, and various industrial tools. The 19680 cells are also favored in DIY electronics projects due to their availability and performance.

Safety considerations are crucial when handling 19680 batteries, as they can pose risks such as thermal runaway if damaged, overcharged, or improperly stored. Proper protection circuits, such as battery management systems (BMS), are often employed to mitigate these risks. Additionally, manufacturers specify voltage ratings, typically around 3.7 volts per cell, and recommend appropriate charging methods to ensure longevity and safety.

The 19680 battery has become a standard in portable power solutions, balancing efficiency, capacity, and practicality for both consumer and industrial applications. Its widespread use has contributed to advancements in battery technology and portable energy storage systems.