Electric storage device and method of manufacture thereof

A method of manufacturing an electric storage device, comprising:

• fabricating an electric storage element including a first electrode, a second electrode, and a first end from which the first electrode is led out;
• electrically connecting an element connecting part of a terminal plate and the first electrode at the first end of the electric storage element, the terminal plate including the element connecting part and an external terminal connected to the element connecting part;
• housing the electric storage element connected to the terminal plate together with an electrolyte in an outer jacket formed of a conductive material and including a bottom and a tubular side wall with an opening opposite to the bottom, such that the terminal plate is located nearer the opening than the bottom;
• inserting the external terminal into an insertion hole of a sealing member so as to dispose the sealing member on the element connecting part, while housing the sealing member into the outer jacket;
• and
• sealing the outer jacket with the sealing member and the external terminal,
• wherein the external terminal is one of columnar and tubular body, and has a tapered part on an outer periphery at a tip thereof, and a sealing part linked to the tapered part,
• at least a part of an outer periphery of the sealing member is housed inside the outer jacket before the sealing part of the external terminal comes in contact with the insertion hole of the sealing member when the sealing member is housed in the outer jacket, and
• a part of the external terminal is exposed from the sealing member after housing the sealing member in the outer jacket.