14500 battery is a type of rechargeable lithium-ion battery that is similar in size to a standard AA battery. The “14500” designation refers to its dimensions, which are 14 millimeters in diameter and 50 millimeters in length. These batteries are commonly used in smaller electronic devices such as flashlights, digital cameras, and other portable electronics.
14500 battery size

Like other lithium-ion batteries, 14500 batteries are known for their high energy density and long lifespan. They are also rechargeable, which means they can be used multiple times and are more environmentally friendly than disposable batteries. However, because of their smaller size, 14500 batteries typically have a lower capacity and lower discharge rate than larger lithium-ion batteries such as the 18650 battery.