Electronic device having detachable battery pack

An electronic device (1) may include a battery pack (20) and a battery pack mount portion (102). The battery pack (20) may be mounted or secured within the battery pack mount portion (102) in such a way that the battery pack (20) does not influence or apply pressure to neighboring structures. For examples, the battery pack (20) may include at least one seat protrusion (231, 232, 233) that is received within at least one recess (111, 112, 113) formed in the battery pack mount portion (102).