Connecting the battery for trickle charging

A suitable battery charging device must be connected to the vehicle electrical system when performing the following tasks. All unnecessary loads must be switched off. 

When working on the vehicle for more than 15 minutes

When running a diagnosis using the Porsche System Tester

When adjusting the headlights

When working on or with the Infotainment system

If the doors, bonnet and rear lid are open for a long period of time or if these components are actuated frequently