An unmanned aerial vehicle (UAV) includes a fuselage, an electrical component, and an adapter arranged at the fuselage. The fuselage includes a battery compartment for accommodating a battery. The battery compartment includes an electrical connector for electrically coupling to the battery. The adapter is electrically coupled to the electrical connector and includes an access unit electrically coupled to the electrical connector and an adapting unit detachably coupled to the access unit. The adapting unit is configured to be electrically connected to the access unit when the adapting unit is coupled to the access unit. The adapting unit is electrically coupled to the electrical component through an adapting conductive wire to conduct power from the battery to the electrical component.