Key features:-
Rechargeable: 18650 batteries are rechargeable lithium-ion batteries, allowing them to be used and recharged multiple times.
Voltage: Most 18650 batteries have a nominal voltage of 3.7 volts. The voltage ranges from around 4.2 volts when fully charged to about 3.0 volts when fully discharged.
Applications: 18650 batteries are used in a wide range of applications, including laptops, flashlights, electronic devices, power banks, e-cigarettes, portable speakers, and more.
Capacity: A 1200mAh capacity indicates the battery's energy storage capability. For example, a device consuming 1000mA (1A) could theoretically operate for around 1.2 hours using a fully charged 1200mAh battery (1200mAh / 1000mA = 1.2 hours).