NOVELTY - The holder (410) has a pinching support board (411L) inserting a sequence direction end surfaces of an arranged cell. A beam part (417) is connected to an edge of the pinching support board. Another beam part is detachably connected with the edge. The former and the latter beam parts are not correctly aligned on basis of the pinching support board, where shapes of the beam parts are monotonous. The latter beam part is located in a bottom face of a stack. A third beam part is located in an upper surface of the stack. A fixed hook (411b) is provided in the pinching support board.    USE - Holder for an assembled battery e.g. lead-free non aqueous electrolyte secondary battery such as lithium ion secondary battery, of a power supply device (all claimed) of an electric vehicle. Can also be used for a nickel-hydrogen battery and an electrical double layer capacitor of an electronic device e.g. mobile telephone and information technology apparatus.    ADVANTAGE - The holder allows a fastening part to be easily and temporarily fixed to the pinching support board without requiring a tool separately, so that time required for creation of the assembled battery can be shortened, thus improving productivity of the assembled battery. The cell can discharge electrolyte solution simultaneously such that internal pressure rises and a safety valve opens by disassembly of electrolyte solution when gas is emitted so as to prevent electrolyte solution from being diffused besides the stack carelessly, thus achieving reduction of number of parts and weight of an assembled battery. The holder allows a power-supply-device main body to be equipped with a tab with which a through-hole is provided based on the holder so as to fix the power supply-device main body stably within a storage container, thus providing the power supply device with better reliability. The power-supply-device main body can be fixed in a storage container without requiring separately a part for connecting the holder and the storage container, so that number of manufacturing processes can be reduced.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a power supply device.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a structure of an assembled battery holder.    Holder (410)    Fixed hook (411b)    Pinching support boards (411L, 411R)    Through-holes (415a-415d)    Beam part (417)