Question about Bosch Professional GDR 18V-160

Changed over to winter wheels last night: Unfortunately, the GDR 18V-160 didn't manage to loosen the wheel nuts. With the wheel still on the ground and the hydraulic jack in place, I loosened the wheel nuts with the conventional wheel nut spanner, then jacked up the car and unscrewed the wheel nuts with the cordless impact spanner - which was very quick! The winter wheels were then fitted in reverse order.
Not quite the relief I had hoped for, but it was quicker all the same. Be sure to check the torque after mounting, as you need a different tool anyway.