Maxcap double layer capacitors are a new electric energy storage device known for their extremely high volumetric efficiency and long lifespan. Pioneered by Sohio/Carborundum and now manufactured by Kanthal Globar, these capacitors are suitable for applications requiring memory backup and data transmission power. They offer fast charge/discharge capabilities, very low leakage current, and do not experience the limitations of batteries or aluminum electrolytic capacitors. The high capacitance is achieved through an electric double layer formed at the interface of activated carbon and a stable electrolyte, making them a reliable and long-lasting power solution.