Factory H07V-K series 1.5mm², 2.5mm², 6mm², 10mm², 16mm² pure copper car battery cable flexible electrical wires are high-performance cables specially designed for automotive power transmission systems. With high-purity pure copper as the conductor core, combined with temperature-resistant and wear-resistant insulation and sheath materials, they have excellent conductivity, flexibility and environmental adaptability. They are widely used in car battery connection, power distribution in the engine compartment and power supply of on-board equipment, providing reliable guarantee for the stable operation of automotive electrical systems.​ I. Core Specifications and Performance Parameters​ Conductor and Conductivity Performance​ 1.5mm² cable: Composed of 19 strands of 0.32mm fine copper wires. The DC resistance of the conductor at 20℃ is ≤12.1Ω/km, and the current-carrying capacity when laid in air reaches 19A, which can meet the power supply requirements of small on-board electrical appliances.​ 2.5mm² cable: Stranded by 19 strands of 0.41mm copper wires, with a DC resistance of ≤7.41Ω/km and a current-carrying capacity of 25A, suitable for short-distance connection between car batteries and starter motors.​ 6mm² cable: 7 strands of 1.04mm copper wire stranded structure, with a DC resistance of ≤3.08Ω/km and a current-carrying capacity of 42A, which can be used for main power lines of automobiles and power supply for high-power equipment.​ 10mm² cable: 7 strands of 1.35mm copper wire stranded, with a DC resistance of ≤1.83Ω/km and a current-carrying capacity of 57A, suitable for battery pack connection of large trucks or special vehicles.​ 16mm² cable: 7 strands of 1.70mm copper wire stranded, with a DC resistance of ≤1.15Ω/km and a current-carrying capacity of 74A, which can meet the high-power power transmission needs of heavy machinery vehicles.​ All conductors are made of electrolytic pure copper with a purity of ≥99.95%. After annealing treatment, their flexibility is significantly improved, with a bending radius of ≤4 times the outer diameter. They can easily adapt to the complex wiring space inside the car, and still maintain good conductivity after multiple bendings.​ Insulation and Sheath Performance​ The insulation layer is made of temperature-resistant PVC material, and its thickness increases with the specification (0.8mm for 1.5mm² and 1.4mm for 16mm²). It has a temperature resistance range of -40℃ to 90℃, and can resist the high-temperature environment in the engine compartment and the influence of low temperature in winter.​ The sheath layer is made of flame-retardant PVC material with oil-resistant additives, with a thickness of 1.0-1.6mm and an overall outer diameter of 6.5-18mm. It has excellent oil resistance, can resist the erosion of common automotive fluids such as engine oil and transmission oil, and passes the vertical burning test (VW-1 level), improving the electrical safety of the vehicle.​ Electrical Safety Performance​ The rated voltage is 450/750V, which is far higher than the working voltage of the automotive electrical system. It can withstand a power frequency withstand voltage of 3kV for 5 minutes without breakdown.​ The insulation resistance is ≥100MΩ (at 90℃), and the short-circuit withstand temperature is 160℃ (5 seconds). It meets automotive cable standards such as ISO 6722 and SAE J1128, ensuring electrical stability under working conditions such as vehicle bumping and vibration.​ II. Characteristic Applications and Scene Adaptation​ Passenger Car Field​ 1.5mm² cable: Used for power connection of low-power equipment such as car audio, navigation systems, and interior lighting. The slender wire diameter is convenient for hidden wiring and does not occupy interior space.​ 2.5mm² cable: As the connection line between the car battery and the fuse box, cigarette lighter interface, it can flexibly adjust the wiring angle according to the battery position while meeting the current transmission demand.​ 6mm² cable: Adapted to the low-voltage battery system of new energy passenger cars, connecting the battery and the on-board charger. Its temperature resistance can cope with the temperature rise during charging and discharging.​ Commercial Vehicles and Special Vehicles​ 10mm² cable: Used for the starter motor line of medium-sized trucks and the power supply of refrigeration units of refrigerated trucks, which can withstand the continuous current generated by the vehicle's long-term operation.​ 16mm² cable: Adapted to the series line of battery packs of heavy trucks and engineering vehicles, it still maintains stable power transmission under bumpy road conditions, ensuring the smooth start of the engine.​ Special Environment Applications​ High-temperature scenes: The wire harness near the exhaust pipe in the engine compartment, with 90℃ temperature resistance, can resist the influence of radiant heat and avoid aging and cracking of the insulation layer.​ Oil-contaminated environment: The cables near the gearbox, the oil-resistant sheath can prevent insulation failure caused by oil penetration, prolonging the service life.​ Low-temperature areas: In the severe cold environment of -40℃, the cable still maintains flexibility, avoiding breakage caused by brittle cables when the vehicle starts in winter.​ III. Material Technology and Advantages​ The conductor is made of high-purity electrolytic copper, which is treated by continuous annealing process to eliminate internal stress, improve flexibility and ensure a conductivity of more than 99.9%, reducing transmission loss.​ The insulation and sheath are formed in one time by co-extrusion process, with tight interlayer bonding without bubbles, improving the peel resistance, and can resist vibration and friction during vehicle driving.​ The surface of the cable is printed with clear specification marks, certification information and meter marks, which is convenient for quick identification and cutting during installation, improving construction efficiency.​ The overall structure has passed strict tests such as 1000 bending tests (bending radius 4 times the outer diameter) and 500-hour oil resistance tests (100℃ oil immersion), ensuring reliable operation during the entire life cycle of the car.​ With the characteristics of strong adaptability and stable performance, this series of cables has become the preferred cable in the automobile manufacturing and after-sales maintenance market. It can accurately match specifications according to vehicle types and power of electrical equipment, balancing safety and economy.