Abstract: A metallic accommodating frame is the metallic accommodating frame for a lead storage battery that accommodates the lead storage battery including an electrode group in which a positive electrode plate and a negative electrode plate are stacked with a separator interposed therebetween, and a battery case for accommodating the electrode group, in which the positive electrode plate and the negative electrode plate are formed by filling an electrode material into a grid body having a protrusion that projects outwardly from a frame forming an outline in a plan view. The metallic accommodating frame includes: a conductive housing-having an opening that opens horizontally, and accommodating the lead storage battery therein; and a first protector that is disposed between a first surface facing the protrusion among surfaces forming the battery case of the lead storage battery accommodated in the housing and the housing, and is made of an insulating material.