To provide a mounting structure of a battery instrument for vehicle capable of improving utility of a luggage compartment.

Although a space under an upper back panel 110 has not been effectively utilized as the luggage compartment in a conventional vehicle, this battery instrument 350 for vehicle is arranged close to an undersurface 110A of the upper back panel 110 to enable effective use of the space in this embodiment. A space above a floor surface 104 capable of being utilized as the luggage compartment becomes larger by the effectively utilized space. In addition, the floor surface 104 becomes flat up to an innermost part (an end part in front of vehicle) of the luggage compartment 100. As a result, utility of the luggage compartment 100 is improved, that is, the luggage compartment 100 provides satisfactory ease of use.