This device is a genuine vintage Porsche Charge-o-mat battery maintainer (Part Number: 980 611 981 00). It is designed to keep a vehicle's 12-volt lead-acid battery fresh and fully charged during long periods of storage, preventing power drainage. Compatibility WarningThis is an older generation Porsche accessory. While it works perfectly on older generations like the 993, 996, 997, and early Boxster/Cayman models, it is not recommended for modern Porsches equipped with Absorbent Glass Mat (AGM) or Lithium-ion batteries (such as newer 718, 992, or Macan models). Using this vintage maintainer on newer battery chemistries can lead to improper charging or battery damage. For modern vehicles, Porsche recommends their updated
