To charge the battery on a Porsche Cayenne S you need to open the hood and on the driver's side open the tallest panel and put the cables on the two points.
Anyplace that sells batteries can get you the correct size for your Porsche. You do not have to purchase a battery from Porsche.
Either the battery is defective and has a dead cell or something is on which is pulling power from the battery every night.
Under the driver seat
Porsche Cayenne was created in 2002.
The 2010 Porsche Cayenne has .
The 2014 Porsche Cayenne has 24 valves.
The 2009 Porsche Cayenne has 24 valves.
The 2012 Porsche Cayenne has 24 valves.
The 2004 Porsche Cayenne has 24 valves.
The 2003 Porsche Cayenne has 32 valves.
The 2010 Porsche Cayenne has 24 valves.
The 2009 Porsche Cayenne has a V6 engine.