Ancor Black 4 AWG Tinned Copper Battery Cable - 500'

The Ancor Black 4 AWG Tinned Copper Battery Cable – 500' is the professional-grade marine wiring solution trusted by serious boaters, commercial fishermen, and marine electricians who demand reliability in harsh saltwater environments. After years running batteries, charging systems, and high-amperage DC loads aboard vessels, any skipper knows that undersized or corroded battery cable is a silent killer—it drops voltage, creates heat, and leaves you dead in the water when you can least afford it. This 500-foot spool gives you the capacity to wire larger vessels, dual battery banks, or run multiple equipment circuits without compromises on safety or performance.

Constructed with tinned copper conductors and marine-grade vinyl insulation rated at 600V, Ancor cable exceeds UL 1426, ABYC (American Boat and Yacht Council), and US Coast Guard standards for charter vessels (CFR Title 46), ensuring compliance with the strictest marine electrical codes. The 4 AWG gauge handles high current loads typical of engine starting circuits and main battery buses while the tinned copper resists corrosion far longer than bare copper in salt spray and damp bilge conditions. The 500-foot length eliminates weak splice points and allows single runs from batteries to main panels, alternators, or remote equipment without intermediate connections that invite voltage drop and failure. At 92.2 pounds per spool, this cable is substantial enough to handle professional installations on center-console fishing boats, cruisers, or trawlers.

Marine electricians and boat builders rely on Ancor battery cable for main engine starting circuits, thruster systems, and high-load DC distribution where voltage regulation and fire safety are non-negotiable. The robust construction and corrosion-resistant tinning make it the standard for refits and new builds where warranty coverage and insurance underwriting depend on code-compliant materials. Whether you're upgrading from deteriorated original wiring or designing a new dual-battery system for extended offshore runs, this 500-foot spool provides the flexibility and reliability that keeps charging systems functional and crews safe when miles from port.