The Cartrend jump starter cable features a copper-coated aluminum core and comes with a red and a black cable equipped with fully insulated Best-Contact clamps. The cables, using copper-aluminum technology, match the conductivity of a 25 mm² copper jump starter cable and comply with DIN 72553. The colors serve as important indicators for where the cables should be connected. In any electrical system, electrical energy flows from the negative terminal of a battery through a system of wires to the positive terminal to power something—in this case, the vehicle's starter. For a jump start to work properly, it is essential to ensure that the correct clamps are connected. The red cable of the jump starter always represents the side that should be connected to the positive terminal. The black starter cable should be connected to the negative terminal. Only touch the intended target with the clamps of the jump starter cable. The Cartrend jump starter cable is suitable for gasoline engines up to 5500 cm³, diesel engines up to 3000 cm³, and operates at 12V and 24V. It comes in a practical storage bag that protects it from damage and keeps it readily accessible.