The present invention aims at high capacity of a secondary battery. The present invention provides a secondary battery and a current collector terminal. A secondary battery employs a stacked electrodeassembly. A current collector terminal (22, 24) includes a base plate portion (22a, 24a) and a current collector plate portion (22b, 24b) being continuous with the base plate portion (22a, 24a) and extending along a direction orthogonal to the base plate portion (22a, 24a). The current collector plate portion (22b, 24b) includes a plurality of slits (22c, 24c) extending from a tip end of the current collector plate portion along a direction orthogonal to the base plate portion (22a, 24a). A cut-out (22c1) is formed in at least one of an edge of the plurality of slits (22c, 24c) and an edge (22b1, 24b1) of the current collector plate portion (22b, 24b) extending along a direction orthogonal to the base plate portion (22a, 24a).