Portable power supply

A portable power supply comprising:

• a secondary battery;
• and
• a housing including a lower housing that accommodates and supports the secondary battery and has a box shape with an open upper surface, and a lid housing that is arranged to cover the lower housing from above, the housing including a first handle part and a second handle part on opposing edge parts of an upper edge part thereof, so as to be portable by hand, wherein
• each of the first handle part and the second handle part includes a base part made from a metal, as a core material, and
• the lid housing, the lower housing, and the base part of each of the first handle part and the second handle part are held through screwing of a male screw bolt and a female screw bolt which are inserted in the housing in a vertical direction of the housing.