The present invention relates to a storage battery, comprising a housing, an electrical storage element provided in the housing, a connection column provided on the housing, and a connection terminal connected to the connection column. A connector is provided on the electrical storage element. The connection column is connected to the connector. The housing is provided with a counterbore. A connection part of the connection column and the connection terminal is located in the counterbore. The counterbore is filled with an epoxy resin. The housing is provided with a slot. The connection terminal comprises a flat part connected to the connection column, an L-shaped connection plate used for connecting to an external device, and a snap-fitting part snap-fitting into the slot. The flat part, the L-shaped connection plate, and the snap-fitting part are integrally connected. The L-shaped connection plate and the snap-fitting part are located at a side of the connection column.