An electric storage device comprising: a case; an electrode assembly housed in the case and including a positive electrode plate and a negative electrode plate which are wound together while being isolated from each other; an external terminal arranged outside the case; and a current collecting member arranged inside the case to electrically connect the electrode assembly with the external terminal, wherein the current collecting member comprises: a first portion including a first end portion and a second end portion and electrically connected to the external terminal; and a second portion extending out of the second end portion of the first portion and electrically connected to the electrode assembly, and the second portion comprises: a base portion including a first end portion and a second end portion, the first end portion being connected to the second end portion of the first portion; a twisted portion including a first end portion and a second end portion, the first end portion being connected to the second end portion of the base portion; and characterized in that the second portion further comprises: an insertion portion including a first end portion and a second end portion, the first end portion being connected to the second end portion of the twisted portion, the insertion portion being inserted into a winding center of the electrode assembly and electrically connected to the electrode assembly, wherein the current collecting member is arranged so that the base portion faces an end face of the electrode assembly. a case; an electrode assembly housed in the case and including a positive electrode plate and a negative electrode plate which are wound together while being isolated from each other; an external terminal arranged outside the case; and a current collecting member arranged inside the case to electrically connect the electrode assembly with the external terminal, wherein the current collecting member comprises: a first portion including a first end portion and a second end portion and electrically connected to the external terminal; and a second portion extending out of the second end portion of the first portion and electrically connected to the electrode assembly, and the second portion comprises: a base portion including a first end portion and a second end portion, the first end portion being connected to the second end portion of the first portion; a twisted portion including a first end portion and a second end portion, the first end portion being connected to the second end portion of the base portion; and characterized in that the second portion further comprises: an insertion portion including a first end portion and a second end portion, the first end portion being connected to the second end portion of the twisted portion, the insertion portion being inserted into a winding center of the electrode assembly and electrically connected to the electrode assembly, wherein the current collecting member is arranged so that the base portion faces an end face of the electrode assembly. a first portion including a first end portion and a second end portion and electrically connected to the external terminal; and a second portion extending out of the second end portion of the first portion and electrically connected to the electrode assembly, and the second portion comprises: a base portion including a first end portion and a second end portion, the first end portion being connected to the second end portion of the first portion; a twisted portion including a first end portion and a second end portion, the first end portion being connected to the second end portion of the base portion; and characterized in that the second portion further comprises: an insertion portion including a first end portion and a second end portion, the first end portion being connected to the second end portion of the twisted portion, the insertion portion being inserted into a winding center of the electrode assembly and electrically connected to the electrode assembly, wherein the current collecting member is arranged so that the base portion faces an end face of the electrode assembly. a base portion including a first end portion and a second end portion, the first end portion being connected to the second end portion of the first portion; a twisted portion including a first end portion and a second end portion, the first end portion being connected to the second end portion of the base portion; and characterized in that the second portion further comprises: an insertion portion including a first end portion and a second end portion, the first end portion being connected to the second end portion of the twisted portion, the insertion portion being inserted into a winding center of the electrode assembly and electrically connected to the electrode assembly, wherein the current collecting member is arranged so that the base portion faces an end face of the electrode assembly. an insertion portion including a first end portion and a second end portion, the first end portion being connected to the second end portion of the twisted portion, the insertion portion being inserted into a winding center of the electrode assembly and electrically connected to the electrode assembly, wherein the current collecting member is arranged so that the base portion faces an end face of the electrode assembly.