According to one embodiment, an electronic apparatus comprises a casing that includes a battery unit, which features a plurality of battery cells and a case, and a mechanical component. Housing the cells, the case includes a first part to contain at least one cell, a second part to contain at least one cell, and a third part to connect the first part and the second part, the third part including an escape section. The mechanical component is at least partially located in a space formed by the escape section.