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, which generates electricity as the wheels turn. The generated power can be used to charge batteries or directly power lights and other small electronic devices. Bicycle generators are often used in commuter bicycles and touring bikes to provide a sustainable energy source for lighting and navigation. They are an eco-friendly alternative to battery-powered systems, reducing reliance on disposable batteries and promoting energy efficiency while cycling.