Energy storage power supply

Provided is an energy storage power supply including a housing having an accommodation cavity, a plurality of cells, a second support disposed in the accommodating cavity, a busbar assembly configured to electrically connect the cells, and a port provided on the housing and configured to connect the energy storage power supply to an electrical device or a charging device. The accommodation cavity is provided with a first support at an inner wall of the accommodation cavity. The first support is provided with a plurality of first fixing members. The cells correspond to the first fixing members in one-to-one correspondence, and first ends of the cells are accommodated in the first fixing members, respectively. The second support is provided with a plurality of second fixing members corresponding to the plurality of cells in one-to-one correspondence, and second ends of the cells are accommodated in the second fixing members, respectively.