BATTERY CELL AND BATTERY

An aspect of the present application provides a battery cell including an electrode assembly and a package bag accommodating the electrode assembly, the electrode assembly includes a first end surface and a second end surface disposed opposite to the first end surface, and the battery cell further includes a support assembly disposed between the electrode assembly and the package bag, and the support assembly has a cavity disposed opposite to the first end surface or the second end surface. Another aspect of the present application provides a battery. The purpose of the present application is to increase the storage amount of the electrolyte in the battery cell and the battery.