Abstract: A battery includes a housing, an electrode assembly, a first bonding part, and a second bonding part. The electrode assembly includes a body portion and a first metal portion. The first metal portion protrudes from the body portion along a first direction. The body portion includes a first protruding portion, a first portion, and a second protruding portion that are connected in sequence. The first portion includes a first surface and a second surface disposed opposite to each other in the second direction. The first protruding portion includes a third surface located on a same side as the first surface and a fourth surface disposed opposite to the third surface. The second protruding portion includes a fifth surface located on the same side as the first surface and a sixth surface disposed opposite to the fifth surface. The first protruding portion includes a seventh surface in the first direction.

Abstract: An electrode assembly formed by winding a first electrode plate, a separator and a second electrode plate. A winding terminating end of the first electrode plate is positioned on an outer side of a winding terminating end of the second electrode plate facing away from a winding core. A first active material layer on the winding terminating end of the first electrode plate covers one surface of the first current collector facing toward the second electrode plate. The other surface of the first current collector on the winding terminating end of the first electrode plate facing away from the second electrode plate is not coated with the first active material layer. The electrode assembly does not have a plain aluminum foil at the outermost ring, which enhances the energy density of lithium-ion batteries and improves drop safety. The application further provides a battery having the same.