An electric storage apparatus comprising: a plurality of electric storage devices aligned in a first direction and each having an electrode terminal extending in a second direction orthogonal to the first direction; a holding member including a pair of end members (70, 70) sandwiching the plurality of electric storage devices in the first direction, and a pair of coupling members (75, 75) coupling lateral parts of the pair of end members (70, 70) to each other; and a circuit case housing a circuit thereinside; wherein the holding member has an opening that is defined by end edges, in the second direction, of the pair of end members (70, 70) and the pair of coupling members (75, 75); and wherein the opening exposes a plane of the electrode terminals of the plurality of electric storage devices; and wherein the circuit case is formed into a size corresponding to the opening so as to close the opening; characterized in that the pair of coupling members (75, 75) is arranged on both sides of the plurality of electric storage devices in a third direction orthogonal to the first and second directions; the end edges of the pair of coupling members (75, 75) extend along the first direction in a straight line and in parallel with a predetermined distance to each other; the pair of end members (70, 70) comprise support posts on their top portions, each support post having an internal thread extending in the second direction and for receiving a screw fastener; the circuit case is fixed on top of the pair of end members (70, 70) by the screw fastener; and an outer circumference of the circuit case overlaps the end edges of the opening. a plurality of electric storage devices aligned in a first direction and each having an electrode terminal extending in a second direction orthogonal to the first direction; a holding member including a pair of end members (70, 70) sandwiching the plurality of electric storage devices in the first direction, and a pair of coupling members (75, 75) coupling lateral parts of the pair of end members (70, 70) to each other; and a circuit case housing a circuit thereinside; wherein the holding member has an opening that is defined by end edges, in the second direction, of the pair of end members (70, 70) and the pair of coupling members (75, 75); and wherein the opening exposes a plane of the electrode terminals of the plurality of electric storage devices; and wherein the circuit case is formed into a size corresponding to the opening so as to close the opening; characterized in that the pair of coupling members (75, 75) is arranged on both sides of the plurality of electric storage devices in a third direction orthogonal to the first and second directions; the end edges of the pair of coupling members (75, 75) extend along the first direction in a straight line and in parallel with a predetermined distance to each other; the pair of end members (70, 70) comprise support posts on their top portions, each support post having an internal thread extending in the second direction and for receiving a screw fastener; the circuit case is fixed on top of the pair of end members (70, 70) by the screw fastener; and an outer circumference of the circuit case overlaps the end edges of the opening.