This cable allows you to charge Mark 3 battery from car cigarette lighter socket. IMPORTANT: This car charging cable is designed for charging the Mark 3 battery only. It cannot be used to power the Mark 3 AC unit directly, as the vehicle’s 12V output is incompatible with the Mark 3’s 48V power requirements. Specifications: Wire size: 16AWG Rated Current: 10A Cable Length: 1.2 meters Note: Accessories do not support the 30-day return policy. Tutorial video for reference