It retails for 232 62. To combat power drainage porsche created the porsche battery maintainer aka the charge o mat pro. The charger pack measures about 6 5 long 2 5 wide and features modes for both cars and motorcycles.
Porsche Tequipment Ctek Charge O Mat Battery Charger And Maintainer 95504490054 Battery Charger
Ctek 40 206 Mxs 5 0 12 Volt Battery Charger And Maintainer With Accessories Ideal For Start Stop Systems C Battery Charger Charger Recondition Batteries