Sealed battery

A sealed battery comprising:

• a columnar battery case encapsulating a chargeable/dischargeable electrode assembly and electrolyte in an interior and having a vent that cleaves up when a pressure in the interior exceeds a threshold;
• a cover that covers at least a portion of an outer surface of the vent of the battery case to prevent the vent from being covered with resin which is formed on the battery case;
• a temperature protection device electrically connected with a terminal of the battery case and capable of blocking electric current when a temperature exceeds a threshold;
• and
• two connection lines connected with the temperature protection device,
• wherein the cover includes an overhang located to cover at least a portion of the temperature protection device when the temperature protection device is mounted on the cover,
• the overhang includes a visor covering a side of the temperature protection device opposite a side thereof facing the battery case and a support that supports the visor and covers the temperature protection device from a side, and is L-shaped in a cross section to cover the temperature protection device from at least two directions,
• the temperature protection device is at least partially covered with the overhang and, together with the cover, covered with the resin, and
• the visor has a low-rigidity portion with a rigidity lower than in another portion to allow the visor to be deformed toward the temperature protection device.