ELECTRIC-VEHICLE BATTERY AND ELECTRIC VEHICLE

An electric-vehicle battery (30) includes: a battery cell (42); an input/output component (46) to/from the battery cell (42); a battery case (40) including a main housing unit (54) in which the battery cell (42) is housed, the battery case (40) including a sub-housing unit (56) in which the input/output component (46) is housed, the main housing unit (54) and the sub-housing unit (56) being adjacent to each other in a first direction (D1), the sub-housing unit (56) having a contour smaller in width in a second direction (D2) perpendicular to the first direction (D1) than the main housing unit (54), the battery case (40) having a recess (58) made up of adjacent external surfaces of the main housing unit (54) and the sub-housing unit (56); and a connector (60) situated in the recess (58)of the battery case (40) and electrically connected to the input/output component (46).