A storage battery which can be replaced by simple operations within a very short time. The storage battery includes: a plate-shaped plug-in terminal provided to protrude at one side surface of a storage battery having a substantially rectangular parallelepiped shape; and a clamping terminal made of a plurality of parallel plate-shaped members that can clamp the plate-shaped plug-in terminal, and that is provided to protrude at the other side surface of the storage battery, thereby facilitating the storage battery replacement operation. The plug-in terminals or clamping terminals are preferably provided side-by-side in pairs on the respective side. The storage battery preferably has a display device 7 to display data of a charged power amount, a consumed power amount, a remaining power amount, or a storage battery temperature; and a data output unit for outputting the data to a control device of the automobile.