Handheld mobile device

A handheld mobile device, comprising:

• a power module and an electric module, the electric module comprising a housing;
• the power module comprising:
• a battery compartment housing;
• a battery provided inside the battery compartment housing;
• a plurality of electrode interfaces exposed at an end of the battery compartment housing, the plurality of electrode interfaces being electrically connected to the battery;
• and
• a first set of magnetic blocks disposed at the end of the battery compartment housing;
• wherein the electric module further comprises:
• an electric member comprising a printed circuit board mounted in the housing of the electric module;
• a plurality of electrode contacts, one end of each electrode contact of the plurality of electrode contacts being exposed outside the housing of the electric module and electrically connected to the electric member;
• and
• a second set of magnetic blocks mounted on the housing of the electric module on a same side as the plurality of electrode contacts;
• wherein the power module and the electric module are configured to be magnetically and electrically connected to form a circuit through the second set of magnetic blocks and the first set of magnetic blocks;
• wherein the quantity of the plurality of electrode interfaces is at least two;
• the quantity of the plurality of electrode contacts is at least two;
• and
• each electrode contact of the plurality of electrode contacts on the housing matches with one electrode interface of the plurality of electrode interfaces at a corresponding position in the battery compartment housing;
• wherein each 90° rotation of the electric module allows at least two electrode interfaces of the plurality of electrode interfaces on the power module to be aligned with and contacted with at least two electrode contacts of the plurality of electrode contacts.