An electrical connection arrangement (10) for a battery pack-powered electrical hand-hand tool (2) has an adapter (16) which can be arranged at an electric hand-held tool (2) and which, for the electrical connection of the electric hand-held tool (2) to a battery pack (4), has an electric battery terminal (20) for the connection of the battery pack (4) and an electric hand-held tool terminal (18) for detachable connection of the electric hand-held tool and electrically connected with the battery terminal (20), and an auxiliary device terminal (12) for the electrical connection of the auxiliary device (8) with the battery pack, which auxiliary device terminal (12) can be detached from the auxiliary device (8) and is electrically connected to the battery terminal (20).