WNI 4 AWG (4 Gauge) 20 ft Black Ultra-Flexible Pure Copper Welding & Battery Cable — Made in the USA — Car, Inverter, RV, Solar

100% Made in the USA, this WNI 4 AWG (4 Gauge) cable is built for heavy-duty, flexible electrical connections. Constructed from high-strand pure copper and annealed to ASTM standards, the cable meets SAE J1127 approval for welding and battery use. Insulation is EPDM — solvent repellent, abrasion resistant and engineered for flexibility. Electrical rating: up to 600 volts. Temperature range: -50°C to +105°C (-58°F to +221°F). Designed as a premium industrial-grade cable with a generous strand count for maximum flexibility and conductivity, it’s suitable for welding leads or battery installations in cars, inverters, RVs and solar systems. This listing is for a 20 feet, black 4 gauge cable. Other available gauges span from 8 gauge up to 4/0 gauge.