An electric storage module, comprising: a cooling plate with a predetermined thickness between a front surface and a rear surface, with the front surface and the rear surface functioning as cooling surfaces by a coolant flowing in the cooling plate, the cooling plate being disposed so that the front surface and the rear surface are substantially perpendicular to a surface of an end plate of a pair of end plates; a first battery row made up with a plurality of battery cells coupled with the front surface of the cooling plate so as to achieve thermal conduction and to be cooled by the cooling plate, wherein in the first battery row the plurality of battery cells are disposed over a plurality of stages stacked along a direction perpendicular to the surface of the end plate and arrayed along the cooling plate with battery case bottom surfaces of the battery cells facing the front surface of the cooling plate; a second battery row made up with a plurality of battery cells, to be cooled by the cooling plate, arrayed along a predetermined direction, with one end surfaces of the battery cells being coupled with the rear surface of the cooling plate so as to achieve thermal conduction, and to be cooled by the cooling plate, wherein in the second battery row the plurality of battery cells are disposed over a plurality of stages stacked along the direction perpendicular to the surface of the end plate and arrayed along the cooling plate with battery case bottom surfaces of the battery cells facing the rear surface of the cooling plate;, further comprising: a first terminal cover and a second terminal cover disposed so as to hold the first battery row and the second battery row in place respectively between the cooling plate and the first terminal cover and between the cooling plate and the second terminal cover; characterized in further comprising a locking device that holds the first battery row and the second battery row pressed toward the cooling plate respectively with the first terminal cover and the second terminal cover, wherein: the locking device includes the pair of end plates, one disposed along one side of the first battery row and the second battery row, and another disposed along another side of the first battery row and the second battery row, and elastic members disposed so as to apply a force to the first and second terminal covers toward the end plates. a cooling plate with a predetermined thickness between a front surface and a rear surface, with the front surface and the rear surface functioning as cooling surfaces by a coolant flowing in the cooling plate, the cooling plate being disposed so that the front surface and the rear surface are substantially perpendicular to a surface of an end plate of a pair of end plates; a first battery row made up with a plurality of battery cells coupled with the front surface of the cooling plate so as to achieve thermal conduction and to be cooled by the cooling plate, wherein in the first battery row the plurality of battery cells are disposed over a plurality of stages stacked along a direction perpendicular to the surface of the end plate and arrayed along the cooling plate with battery case bottom surfaces of the battery cells facing the front surface of the cooling plate; a second battery row made up with a plurality of battery cells, to be cooled by the cooling plate, arrayed along a predetermined direction, with one end surfaces of the battery cells being coupled with the rear surface of the cooling plate so as to achieve thermal conduction, and to be cooled by the cooling plate, wherein in the second battery row the plurality of battery cells are disposed over a plurality of stages stacked along the direction perpendicular to the surface of the end plate and arrayed along the cooling plate with battery case bottom surfaces of the battery cells facing the rear surface of the cooling plate;, further comprising: a first terminal cover and a second terminal cover disposed so as to hold the first battery row and the second battery row in place respectively between the cooling plate and the first terminal cover and between the cooling plate and the second terminal cover; characterized in further comprising a locking device that holds the first battery row and the second battery row pressed toward the cooling plate respectively with the first terminal cover and the second terminal cover, wherein: the locking device includes the pair of end plates, one disposed along one side of the first battery row and the second battery row, and another disposed along another side of the first battery row and the second battery row, and elastic members disposed so as to apply a force to the first and second terminal covers toward the end plates. a first terminal cover and a second terminal cover disposed so as to hold the first battery row and the second battery row in place respectively between the cooling plate and the first terminal cover and between the cooling plate and the second terminal cover; characterized in further comprising a locking device that holds the first battery row and the second battery row pressed toward the cooling plate respectively with the first terminal cover and the second terminal cover, wherein: the locking device includes the pair of end plates, one disposed along one side of the first battery row and the second battery row, and another disposed along another side of the first battery row and the second battery row, and elastic members disposed so as to apply a force to the first and second terminal covers toward the end plates.