I tried to start A6 3.0 on a 07 plate no power to car at all but the battery has full power and starts from a power pack jump, jumped from the front posts and runs perfectly once started does anyone have any ideas?

 

I thinks Battery Care allows you to have the control over the discharge cycles number, and when this reaches 30 other configured value it notifies you that its time to perform a full discharge in order to keep the battery gauge calibrated.