The lithium battery manufacturer's 18650 battery life theory is 1000 cycles of charging. Due to the large capacity per unit density, most of them are used in notebook computer batteries. In addition, because 18650 has very good stability at work, it is widely used in major electronic fields: commonly used in high-end strong light flashlights, portable Power supplies, wireless data transmitters, electric thermal clothing, shoes, portable instruments and meters, portable lighting equipment, portable printers, industrial instruments, medical instruments, etc.

The nominal voltage of a single cell is generally: 3.6V or 3.7V

The charging voltage is generally: 4.20V (4.2V-4.3V for lithium cobalt oxide)

The minimum discharge termination voltage is generally: 2.75V, lower than this voltage will easily lead to a serious decrease in battery capacity and even scrapping

Maximum charge termination voltage: 4.20V

Diameter: 18±0.2mm

Height: 65±2.0mm

Capacity: more than 1000mAh, the conventional capacity is 2200mAh-3200mAh, the highest battery capacity of 18650 is LG, which can achieve 3600mAh, but the price is not low.