CTEK USB-C CHARGE CABLE CLAMPS Power your CS FREE anywhere with a 12 V service battery. Use a separate 12 V service battery to power the CS FREE without being plugged into a wall outlet. The USB-C CHARGE CABLE CLAMPS are designed in Sweden to quickly. safely and easily power your CS FREE from a 12 V service battery. The clamps allow you to charge and maintain your vehicles battery wherever you are and without having to plug it into a power outlet. Simply attach the red and black clamps to the corresponding positive and negative terminals of the service battery and connect the USB-C plug to the charging port of the CS FREE. The USB-C CHARGE CABLE CLAMPS have strong. wear-resistant and tangle-free cables that have been rigorously tested in Sweden. Guarantee : 2 years application: Charging cable Cable length: 2.0 m Tension: 12V application: Cable clamps