Ultracapacitors are energy storage devices that can charge and discharge much more quickly than conventional batteries. While they don’t store as much energy as lithium-ion batteries, they are often used in conjunction with batteries in EVs to provide short bursts of power, such as during acceleration or regenerative braking. Ultracapacitors have a much longer life cycle and can endure more charge and discharge cycles without degrading. They are not commonly used as the primary energy storage method in EVs but are explored in some hybrid systems to enhance performance.
