Cylindrical secondary battery

A cylindrical secondary battery comprising:

• an electrode assembly including a positive electrode plate, a separator, and a negative electrode plate;
• a case accommodating the electrode assembly and electrically connected to the negative electrode plate;
• a rivet terminal penetrating a lower surface of the case and electrically connected to the positive electrode plate;
• and
• a cap plate sealing an upper portion of the case,
• wherein the negative electrode plate includes a negative electrode current collector having a first surface and a second surface opposite to the first surface, a first negative electrode active material layer coated with a negative electrode active material on the first surface, a second negative electrode active material layer coated with the negative electrode active material on the second surface, and a negative electrode uncoated portion on which the negative electrode active material is not coated, and a length of the first negative electrode active material layer is different from that of the second negative electrode active material layer.