Ancor Black 4 AWG Tinned Copper Battery Cable - 250'

The Ancor Black 4 AWG Tinned Copper Battery Cable — 250' is a marine-grade power distribution solution engineered for vessels requiring reliable electrical connectivity in saltwater environments. This 4 AWG cable delivers the amperage capacity and corrosion resistance needed for battery banks, chargers, and high-demand electrical systems on fishing boats, cruisers, and offshore vessels. The 250-foot spool provides enough length for most single-vessel installations without the waste of oversized orders.

Construction meets or exceeds UL 1426, ABYC, and US Coast Guard CFR Title 46 standards — the regulatory framework that governs marine electrical safety. The cable features tinned copper conductors that resist oxidation far longer than bare copper, a critical advantage in salt air and spray conditions. Premium vinyl insulation rated at 600V with 105°C dry and 75°C wet temperature ratings maintains flexibility in extreme cold (rated to -40°F/C) while resisting battery acid, oil, gasoline, heat, abrasion, and UV radiation. The combination of tinned conductors and marine-grade insulation directly extends service life and reduces voltage drop compared to unprotected alternatives.

This cable is suited for weekend anglers upgrading trolling motor or auxiliary charging systems and serious offshore operators managing complex electrical architectures. The 4 AWG gauge provides approximately 95 amps at 10 feet — sufficient for battery chargers, inverters, and DC distribution panels without excessive voltage sag. The 250-foot length accommodates runs from main battery banks to bow thruster systems, auxiliary charging stations, or remote electrical panels on larger vessels where a single spool eliminates mid-run splicing.

When selecting marine battery cable, wire gauge and conductor material directly impact system reliability under load. Ancor's tinned copper eliminates the corrosion and increased resistance that degrades bare copper over 2–3 seasons in coastal environments. Unlike general-purpose automotive cable, this product is formulated specifically for saltwater exposure and meets the electrical codes enforced by Coast Guard inspections and marine surveyors. The 45.6-pound spool is manageable for single-handed installation yet provides enough footage to eliminate supply-chain complexity on mid-sized refit projects.