Abstract: A housing assembly (100) for enclosing a battery (108) and electrical circuitry (107) comprises a housing element (105) formed to enclose the battery (108) and the electrical circuitry (107) and a battery door (110) for providing access to the battery (108) enclosed by the housing element (105), wherein the battery door (110) comprises mounting means (115) for pivotally mounting the battery door (110) to the housing element (105) such that the battery door (110) rotates between an open and a closed position. The housing assembly (100) further comprises a conductive element (125) mounted to the battery door (110) for engaging the housing element (105) to secure the battery door (110) in the closed position, wherein the conductive element (125) electrically contacts the battery (108) and the electrical circuitry (107) to provide battery power to the electrical circuitry (107) when the battery door (110) is in the closed position.