CONVERTER UNIT USING A STATUS LAMP

The present invention relates to a converter unit for providing a supply current to a load device (2) using a battery (6). The converter unit (1) comprises a controlling means (7) configured to set at least one charging parameter and/or a charging mode and to control charging of the battery (6) based on the type of the battery (6); and at least a first terminal (S1), a second terminal (S2) and a third terminal (S3) for electrically connecting a two-pole status indicator light (8). The status indicator light (8) is selectively connected to two of the terminals (S1, S2, S3) by the manufacturer or user according to the type of the battery (6). The controlling means (7) is configured to detect to which of the first terminal (S1), the second terminal (S2) and the third terminal (S3) the two-pole status indicator light (8) is connected and is configured to set the at least one charging parameter and/or the charging mode based on the detection result.