A battery assembly for an electronic device such as a hearing aid is disclosed. The battery assembly includes; a compartment having a longitudinal axis and a transversal axis and being configured to receive and contain a battery; at least one electrical connection member for establishing electrical connection to a negative pole of the battery; at least one electrical connection member for establishing electrical connection to a positive pole of the battery; a guide structure configured to guide the battery into a predefined position in the compartment. The guide structure guides the battery into electrical connection with a first electrical connection member. A second electrical connection member when the battery is in a first configuration. The guide structure guides the battery into electrical connection with the first electrical connection member and a third electrical connection member when the battery has a reversed orientation.