Ancor #4 Black 50' Spool Tinned Cooper

The Ancor #4 Black 50' Spool Tinned Copper battery cable is a marine-grade electrical conductor designed for secure, reliable power distribution on boats and vessels of all sizes. After years on the water, experienced boaters know that a single corroded or undersized battery cable can leave you dead in the water—literally. This 4 AWG (19mm) tinned copper spool delivers the amperage capacity and corrosion resistance needed for demanding marine electrical systems, whether you're running a center console, cruiser, or commercial fishing vessel.

Constructed to exceed UL 1426, ABYC (American Boat and Yacht Council), and U.S. Coast Guard Charter boat standards (CFR Title 46), this cable features tinned copper conductors that resist oxidation and salt-spray degradation far longer than bare copper alternatives. The 4 AWG gauge provides 95–150 amp capacity at safe voltage drop rates, making it ideal for engine starting circuits, battery interconnects, and main distribution runs on mid-to-large vessels. The 50-foot spool offers flexibility to cut custom lengths for your specific installation, eliminating waste and ensuring proper fit whether you're upgrading an old harness or building a new electrical backbone.

This cable is essential for any boater replacing battery cables, upgrading charging systems, or troubleshooting weak electrical performance. Its marine-grade construction means it won't degrade in bilge spray, engine compartment heat, or coastal salt air—conditions that break down automotive cable within months. The tinned finish also accepts solder and crimped lugs cleanly, making connections reliable and long-lasting. Whether you're a DIY enthusiast or a professional marine electrician, the Ancor 4 AWG tinned copper spool is the standard choice for systems that demand durability and compliance with federal maritime regulations.