BATTERY BOX

A battery box includes a housing, a rotation element, a fixture element, position elements, and connection elements. The rotation element is disposed in the housing. The fixture element is disposed on the rotation element, and includes guide holes. The position element is disposed on the fixture element, and includes movement shafts extending through the guide holes. The connection elements are connected to the rotation elements and movement shafts. The battery is configured to be placed between the position elements. When the rotation element is rotated, the connection elements move the position elements.