Accumulator (energy)
energy storage device: a device which accepts energy, stores energy, and releases energy as needed
An accumulator is a device that stores energy and releases it when needed. Accumulators can store different types of energy like heat, mechanical energy, or electricity. Examples of accumulators include steam accumulators, springs, flywheels, hydraulic accumulators, rechargeable batteries, capacitors, and pumped-storage hydroelectric plants.
