Battery and electric apparatus including same

A battery comprising an electrode assembly and a housing accommodating the electrode assembly, the electrode assembly comprising a first electrode sheet and a second electrode sheet that are stacked and adjacently disposed;

• wherein,
• the first electrode sheet comprises a first edge extending along a first direction, a second edge extending along a second direction perpendicular to the first direction, and a third edge extending along a third direction intersecting both the first direction and the second direction, and the third edge comprising a first end connected to the first edge and a second end connected to the second edge;
• the battery further comprises a first layer comprising an insulating material and adhered to the first electrode sheet, the first layer comprising a first border extending along the first direction and a second border extending along the second direction and connected to the first border;
• when observed along a fourth direction perpendicular to both the first direction and the second direction, the first border and the second border each comprise a portion overlapping with the first electrode sheet, and the first border further comprises a portion spaced apart from the first edge and the second edge and connected to the third edge;
• and
• the fourth direction is a stacking direction of the first electrode sheet and the second electrode sheet, and in the fourth direction, the first electrode sheet is located on an outermost side of the electrode assembly.