Red 6 Gauge Battery Cable With Lug On has an amperage capacity of 50 amps at a cable length of 11.8 feet. 6 gauge red battery cable is often used for power applications in small cars, RV trailers, golf carts, and small marine crafts. Also great for smaller solar cable applications. When used as a positive battery cable in a low voltage electrical system, the total length of both the positive and negative cables have to be considered when selecting amperage capacity of the 6 AWG cable in your electrical system.