POWER-SUPPLY DEVICE AND BATTERY CONNECTOR

[Problem] To provide a power unit and a battery connector configured to reduce costs by automatizing an arrangement of the electric wire. [Means for solving the problem] A bus bar 3 connects in series the plurality of batteries 10 by connecting a positive electrode 12 with a negative electrode 13 in each of the adjacent batteries. A terminal 4 is connected to the bus bar, and to which an electric wire is attached. The bus bar 3 and the terminal 4 are integrally formed with each other with a coupling portion 9. Further, the terminal 4 includes at least a pair of press-connecting blades 42d for cutting through an insulating cover of an electric wire 5 and press-contacting a core wire of the electric wire 5 when the electric wire 5 is press-fitted into between the press-connecting blades 42d.