Patent ID: 8478365

Claim:
A mobile terminal apparatus comprising: a casing; an operation key member on an external face of the casing; a circuit board having a first surface facing the operation key member inside the casing and a second surface opposite the first surface and at least one component mounted on the second surface; and a battery contained within the casing and having a third surface facing the second surface of the circuit board on a side opposite the operation key member inside the casing, wherein the battery comprises at least one rib extending outwardly from the third surface toward the second surface, the at least one rib making direct contact with the second surface while not contacting the at least one component, wherein the battery further includes a battery cell, a battery substrate electrically connected to terminals of the battery cell, and an electrical connection part electrically connected to the battery substrate, and the battery cell, the battery substrate, and the electrical connection part are contained within a single integrally molded part such that a connection end of the electrical connection part is exposed, and wherein the at least one rib is integrally formed and part of the integrally molded part, wherein the connection end of the electrical connection part is on a side face of the battery, wherein the side face is substantially perpendicular to the third surface.