A bicycle generator is a device that converts the mechanical energy produced by pedaling a bicycle into electrical energy. This is typically achieved using a dynamo or generator attached to the bike's wheel, which spins as the bike moves. The generated electricity can be used to power lights, charge batteries, or run small electronic devices. These generators are often used in various applications, including commuter bicycles for safety lighting and recreational cycling for powering gadgets. They provide a sustainable energy source, allowing cyclists to generate their own electricity while exercising and reducing reliance on batteries or external power sources.