The battery product category includes electrochemical storage cells (batteries) in a wide variety of chemistries and sizes, along with holders, clips, contacts, chargers, and other battery-related items including automotive 12V ("cigarette lighter") power plugs and sockets. Alkaline, Lithium, lead acid, silver oxide, Ni-MH, Ni-Cad, Zinc-Air, and other chemistries are available, in sizes ranging from the common AA, AAA, D, 9V, 123A, and 2032 to the more obscure 1/3N, 1/6D, 1/2AA, F, and SC, with many others in between.