Cylindrical nonaqueous electrolyte secondary battery

A cylindrical non-aqueous electrolyte secondary battery, comprising:

• an electrode assembly in which an elongate positive electrode and an elongate negative electrode are wound with an interposed separator;
• a non-aqueous electrolyte;
• and
• an outer housing can that houses the electrode assembly and the non-aqueous electrolyte, wherein
• the negative electrode includes:
• a non-facing part which is wound without facing the positive electrode, and which is wound toward a winding-start side from a facing part that faces a winding inner face side of a starting end, in the winding direction, of the positive electrode;
• and a negative electrode tab joined to the non-facing part,
• the negative electrode tab includes:
• a negative electrode facing portion facing the negative electrode;
• and an extended portion which is extended outward from one end, in a width direction, of the negative electrode, and which has, in a longitudinal direction of the negative electrode in a developed state, a length that is smaller than a part of the negative electrode facing portion having a maximum length,
• the part of the negative electrode facing portion having the maximum length is wound for more than or equal to 0.75 turns,
• a base portion, which is a portion of the extended portion forming a boundary with the negative electrode facing portion is wound for less than 0.5 turns, and
• at least one groove extending along the width direction of the negative electrode is provided in the negative electrode facing portion.