A vehicle includes: a first battery unit including a front module group which has a plurality of battery modules and which is arranged under a front seat of the vehicle, a middle module group which has a plurality of battery modules and which is arranged under a rear seat of the vehicle, and a front casing accommodating the front module group and the middle module; and a second battery unit including a rear module group which has a plurality of battery modules and which is arranged in a rear portion of the vehicle, and a rear casing accommodating the rear module group. The front casing and the rear casing are independently fixed to a skeletal structure of the vehicle, and a space is provided between the front casing and the rear casing.