PORSCHE Adapter Compatible with CTEK Trickle Charger ConnectorEasy fit Porsche Cigarette Lighter Adapter Compatible with CTEK Porsche Battery Charger (Connector Only). Compatible with CTEK Porsche battery charger. Porsche cigarette plug adapter is suitable for all Porsche models such as Porsche 911 Panamera Cayenne Macan Cayman 718, etc. Common charging port locations: CTEK cigarette lighter adapter Use any 12V port that stays active when the engine is off usually the one in the trunk. Porsche Battery Tender