Battery, electric storage device, electric vehicle

A battery comprising:

• a safety valve configured to cause a deformation due to an increase in internal pressure of the battery;
• a restraining part including a plurality of first protrusions provided along a first circumference to serve as a restrainer against a lead part when the safety valve and the lead part are shut off due to deformation of the safety valve;
• and
• an insulating holder including a plurality of second protrusions provided along a second circumference to insulate the safety valve and the restraining part,
• wherein a number of the first protrusions and the second protrusions arranged on a diagonal line including the first circumference and the second circumference is 3 or less;
• and
• wherein one of the first protrusions and one of the second protrusions are located on a first side of the diagonal line.