A flywheel system is a mechanical device that stores energy in the form of rotational kinetic energy. It consists of a heavy wheel or disc that spins at high speeds, allowing it to maintain energy and release it when needed. This energy storage method is efficient and can help stabilize power supply in various applications, such as in electric vehicles and renewable energy systems. Flywheel systems are often used in conjunction with batteries to enhance performance. They can quickly absorb and release energy, making them ideal for applications requiring rapid bursts of power. Their durability and low maintenance needs make them a reliable choice for energy management in modern technology.