Share this article Share this article ResearchAndMarkets.com's offering. The global rechargeable battery market reached a value of US$ 94.6 Billion in 2020. A rechargeable battery, also known as a secondary cell, accumulator or storage battery, refers to an electrochemical device that converts chemical energy into electrical energy. These batteries consist of an electrolyte, anode and cathode which produce a current through an electrochemical reaction. They are available in a variety of shapes and sizes ranging from button-sized cells to industrial megawatt systems. Rechargeable batteries have gained immense popularity as they are an ecological and sustainable replacement of non-rechargeable batteries, and provide long-term cost-benefits and enhanced durability. As consumers have been adopting portable devices, such as mobile phones, laptops, cordless power tools and MP3 players, the need for rechargeable batteries has grown substantially over the years.