Abstract: Devices, assemblies, and associated methods are provided for mobile devices. An example mobile device comprises a body defining a cavity; and a battery component that is configured to be at least partially disposed within the cavity, the battery component comprising at least one battery connector disposed on an outer surface of the battery component. In some embodiments, the at least one battery connector is positioned to make contact with at least one electrical connector of the mobile device in order to provide power to the mobile device. In some embodiments, the mobile device is configured to prevent formation of a contact between the at least one battery connector and the at least one electrical connector in an instance in which a size or position of the battery component exceeds a battery bulge threshold.