A battery cell includes a housing, a first electrode assembly, a second electrode assembly, and an accommodating member. The housing is provided with a first wall. The first electrode assembly and the second electrode assembly are both accommodated in the housing and are arranged in a thickness direction of the first wall, the second electrode assembly is located between the first wall and the first electrode assembly, and the first wall is configured to support the second electrode assembly. The accommodating member is disposed in the housing, an accommodating cavity is formed inside the accommodating member, and the accommodating cavity accommodates the first electrode assembly and an electrolytic solution. The first electrode assembly is a structure accommodated in the accommodating member, and the accommodating member can also accommodate the electrolytic solution.