A switch apparatus and an electronic device using the switch apparatus are provided. The switch apparatus includes a first transmitting element, a second transmitting element, an elastic element, and a linkage pole located in the interior space of the electronic device and a slidable actuator mounted above an aperture defined in the electronic device. The slidable actuator is movable along the aperture between a first position and a second position. The first transmitting element is elastically supported by the elastic element and electrically coupled to an electronic board of the electronic device. The second transmitting element is electrically coupled to batteries received in the electronic device. The movement of the slidable actuator from the first position to the second position pushes the linkage pole, causing the linkage pole to move the first transmitting element and separate the first transmitting element from the second transmitting element.