Terminal resin film and power storage device using same

A terminal resin film that is disposed to cover an outer peripheral surface of a portion of a metal terminal electrically connected to a power storage device body constituting a power storage device, the terminal resin film, comprising:

• at least seven layers, wherein
• the at least seven layers among layers constituting the terminal resin film each of which corresponds to at least one layer selected from a group consisting of a layer A, a layer B, a layer C, and a layer D indicated below, and wherein
• at least a portion of the terminal resin film has a structure in which the layer A, the layer B, the layer A, and the layer C are stacked in this order or the layer D, the layer A, the layer B, and the layer A are stacked in this order,
• where,
• the layer A is formed from a resin composition including an acid-modified polyolefin resin and having a melt flow rate of 2.0 to 50 g/10 mins at 230° C.,
• the layer B is formed from a resin composition including a polyolefin resin and having a melt flow rate of 0.05 g/10 mins or more and less than 2.0 g/10 mins at 230° C.,
• the layer C is formed from a resin composition including an unmodified polyolefin resin and having a melt flow rate of 0.05 to 50 g/10 mins at 230° C., and
• the layer D is an adhesive layer including a resin having a cross-linked structure.