{"product_id":"sea-dog-4-awg-black-battery-cable-100-ft-tinned-spool","title":"Sea-Dog 4 AWG Black Tinned Battery Cable, 100 ft Spool","description":"\u003cp class=\"nvn-hero\"\u003eSea-Dog's 4 AWG black battery cable comes on a full 100-foot spool of tinned copper, so you cut each run to length and keep the rest for the next job. It's the black negative cable you reach for when you want tinned wire that holds up in a damp bilge, UL and ABYC certified, sold without terminals so you pick your own lugs.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eWhen you're running a new battery bank or replacing tired, corroded cable, this is the black negative cable you reach for. Sea-Dog's 4 AWG battery cable comes on a full 100-foot spool of tinned copper, so you cut exactly what each run needs and keep the rest for the next job. It's the kind of wire you buy once and forget about, because tinned copper is what holds up in a damp bilge year after year.\u003c\/p\u003e\n\u003cp\u003eHere's why the tinning matters. Bare copper starts to corrode the moment salt air and bilge moisture get to it. That green crust creeps up under the insulation, adds resistance, and eventually cooks a terminal. Every strand of this cable is plated with tin, so it shrugs off that corrosion. Boaters who've pulled tinned cable after five or six seasons in the bilge find it looking almost new inside, while the bare stuff next to it turned green. On the water, that's the difference between a starter that cranks strong and one that drags.\u003c\/p\u003e\n\u003cp\u003eThe 4 AWG size is a workhorse gauge. It's right for house-bank interconnects, windlass feeds on a lot of 30 to 40 foot boats, bow thruster runs, and starter cable on outboards and small diesels. Black is the standard color for the negative side, so keeping your grounds black and your positives red keeps the whole system readable for the next person who opens the panel. Run this as your negative and match it with the same gauge positive so both legs carry current evenly.\u003c\/p\u003e\n\u003cp\u003eBecause it ships without terminals, you set the length and pick the lugs. That's the right way to do a clean install. Measure the run, add a little slack, cut, then crimp on a proper marine lug. Use a hydraulic crimper if you've got one, not a hammer crimp, and finish every end with adhesive-lined heat shrink so moisture can't wick into the strands. On a starter or windlass run, size your fuse to the load and you've got a connection that'll outlast the boat.\u003c\/p\u003e\n\u003cp\u003eA word on handling the spool. Let the cable come off in a relaxed loop rather than yanking it, since kinking heavy gauge wire can nick the strands before it's even installed. And if you're routing a long run through a center console or along a stringer, drop it in conduit or loom so it can't chafe. Little things, but they're what separate a wiring job that passes survey from one that gives you trouble two seasons in.\u003c\/p\u003e\n\u003cp\u003eOne thing to keep straight. This is 4 AWG, so it's sized for battery, ground, and heavier DC runs, not for lighting or small accessory circuits where thinner primary wire is the right call. If you're feeding a big inverter or a large house bank, step up to a heavier gauge for the main leads and use this for the shorter interconnects and grounds. Matching the cable to the load and the run length is how you keep voltage drop in check.\u003c\/p\u003e\n\u003cp\u003eThis cable is UL and ABYC certified, which matters for more than peace of mind. A lot of insurers and surveyors want to see marine-rated, properly certified cable in the DC system, and using the right wire from the start keeps you out of trouble at survey time. It's honest marine cable at a fair price, on a spool big enough to wire most of a boat.\u003c\/p\u003e\n\u003cp\u003eSo why the 100-foot spool instead of a pre-made cable? Simple. Custom lengths. Every boat's runs are different, and a spool lets you make each one exactly right with no wasted slack coiled behind the panel. Buy it once, and it'll handle this project and the next few.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e4 AWG gauge, sized for battery, ground, windlass, thruster, and starter runs on most boats\u003c\/li\u003e\n  \u003cli\u003eTinned copper conductor resists the corrosion that eats bare copper in a damp, salty bilge\u003c\/li\u003e\n  \u003cli\u003eBlack insulation marks it as the negative leg, keeping your DC wiring readable and code-friendly\u003c\/li\u003e\n  \u003cli\u003eFull 100-foot spool lets you cut every run to exact length with no wasted slack\u003c\/li\u003e\n  \u003cli\u003eShips without terminals so you choose the lugs and crimp your own clean connections\u003c\/li\u003e\n  \u003cli\u003eUL and ABYC certified, the marine-rated cable surveyors and insurers want to see\u003c\/li\u003e\n  \u003cli\u003eBuy-once heavy cable that holds up season after season below deck\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Sea-Dog reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this cable tinned copper or bare copper?\u003c\/summary\u003e\n    \u003cp\u003eEvery strand is tinned copper. The tin plating is what lets it shrug off the corrosion that turns bare copper green in a salty, damp bilge, so it holds up season after season.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it come with terminals or lugs?\u003c\/summary\u003e\n    \u003cp\u003eNo. It ships without terminals as bare cut cable, so you set the length and pick your own marine lugs. That's the right way to make clean, custom-length connections.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is 4 AWG cable good for?\u003c\/summary\u003e\n    \u003cp\u003eIt's a workhorse gauge for battery-bank interconnects, ground runs, windlass and bow thruster feeds, and starter cable on outboards and small diesels. For a large inverter or big house bank, step up to a heavier gauge for the main leads.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy is the cable black?\u003c\/summary\u003e\n    \u003cp\u003eBlack is the standard color for the negative side of a DC system. Keeping your grounds black and your positives red keeps the whole system readable for anyone who opens the panel later.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs it certified for marine use?\u003c\/summary\u003e\n    \u003cp\u003eYes. It's UL and ABYC certified. A lot of insurers and surveyors want to see properly certified marine cable in the DC system, so using it from the start keeps you clear at survey time.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow long is the spool?\u003c\/summary\u003e\n    \u003cp\u003eIt's a full 100-foot spool. That's enough to wire most of a boat and cut each run to its own length instead of buying pre-made cables.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow should I terminate the ends?\u003c\/summary\u003e\n    \u003cp\u003eMeasure the run with a little slack, cut, then crimp on a proper marine lug, ideally with a hydraulic crimper rather than a hammer crimp. Finish every end with adhesive-lined heat shrink so moisture can't wick into the strands.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use this as positive cable too?\u003c\/summary\u003e\n    \u003cp\u003eThe gauge and construction are the same, but this spool is black, which by convention is the negative leg. Run it as your negative and pair it with a matching-gauge red positive so both legs carry current evenly.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eSea-Dog 4 AWG Black Tinned Copper Battery Cable, 100 Foot Spool\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSea-Dog\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e8004012\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e035514800426\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWire Gauge\u003c\/th\u003e\n\u003ctd\u003e4 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConductor Material\u003c\/th\u003e\n\u003ctd\u003eTinned Copper\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eInsulation Color\u003c\/th\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePolarity\u003c\/th\u003e\n\u003ctd\u003eNegative\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpool Length\u003c\/th\u003e\n\u003ctd\u003e100 Feet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eTerminals\u003c\/th\u003e\n\u003ctd\u003eWithout Terminal (bare cut cable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCertifications\u003c\/th\u003e\n\u003ctd\u003eUL and ABYC Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCable Type\u003c\/th\u003e\n\u003ctd\u003eMarine Battery Cable\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003e100 Foot Spool\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOwner Reviews\u003c\/h2\u003e\n\u003cdiv class=\"nvn-reviews\"\u003e\n  \u003cp class=\"nvn-rating-summary\"\u003eAverage rating 4.7 out of 5 across 38 owner reviews.\u003c\/p\u003e\n  \u003cdiv class=\"nvn-review\"\u003e\n    \u003cdiv class=\"nvn-review-meta\"\u003e\n\u003cspan class=\"nvn-review-stars\"\u003e★★★★★\u003c\/span\u003e \u003cspan class=\"nvn-review-author\"\u003eD. Harmon\u003c\/span\u003e \u003cspan class=\"nvn-review-date\"\u003e2025-06-18\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cp class=\"nvn-review-body\"\u003eRan this as my negative from the battery switch to the bus bar last spring. Cut clean, took a lug and heat shrink nicely, and the tinned strands look great. No regrets buying the whole spool.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"nvn-review\"\u003e\n    \u003cdiv class=\"nvn-review-meta\"\u003e\n\u003cspan class=\"nvn-review-stars\"\u003e★★★★★\u003c\/span\u003e \u003cspan class=\"nvn-review-author\"\u003eM. Alvarez\u003c\/span\u003e \u003cspan class=\"nvn-review-date\"\u003e2025-04-09\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cp class=\"nvn-review-body\"\u003eUsed it to rewire the grounds on my center console. Tinned copper is the only way to go down here in the salt. Two seasons in and everything's still bright inside the lugs.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"nvn-review\"\u003e\n    \u003cdiv class=\"nvn-review-meta\"\u003e\n\u003cspan class=\"nvn-review-stars\"\u003e★★★★☆\u003c\/span\u003e \u003cspan class=\"nvn-review-author\"\u003eR. Keller\u003c\/span\u003e \u003cspan class=\"nvn-review-date\"\u003e2025-08-02\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cp class=\"nvn-review-body\"\u003eGood heavy cable at a fair price. Just remember it's bare cable, so budget for lugs and a real crimper. Once it's on, it's solid.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this cable tinned copper or bare copper?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Every strand is tinned copper. The tin plating is what lets it shrug off the corrosion that turns bare copper green in a salty, damp bilge, so it holds up season after season.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it come with terminals or lugs?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. It ships without terminals as bare cut cable, so you set the length and pick your own marine lugs. That's the right way to make clean, custom-length connections.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is 4 AWG cable good for?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a workhorse gauge for battery-bank interconnects, ground runs, windlass and bow thruster feeds, and starter cable on outboards and small diesels. For a large inverter or big house bank, step up to a heavier gauge for the main leads.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why is the cable black?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Black is the standard color for the negative side of a DC system. Keeping your grounds black and your positives red keeps the whole system readable for anyone who opens the panel later.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is it certified for marine use?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. It's UL and ABYC certified. A lot of insurers and surveyors want to see properly certified marine cable in the DC system, so using it from the start keeps you clear at survey time.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How long is the spool?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a full 100-foot spool. That's enough to wire most of a boat and cut each run to its own length instead of buying pre-made cables.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How should I terminate the ends?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Measure the run with a little slack, cut, then crimp on a proper marine lug, ideally with a hydraulic crimper rather than a hammer crimp. Finish every end with adhesive-lined heat shrink so moisture can't wick into the strands.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I use this as positive cable too?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The gauge and construction are the same, but this spool is black, which by convention is the negative leg. Run it as your negative and pair it with a matching-gauge red positive so both legs carry current evenly.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"Product\",\n    \"name\": \"Sea-Dog 4 AWG Black Tinned Battery Cable, 100 ft Spool\",\n    \"review\": [\n        {\n            \"@type\": \"Review\",\n            \"author\": {\n                \"@type\": \"Person\",\n                \"name\": \"D. Harmon\"\n            },\n            \"reviewRating\": {\n                \"@type\": \"Rating\",\n                \"ratingValue\": \"5\",\n                \"bestRating\": \"5\"\n            },\n            \"datePublished\": \"2025-06-18\",\n            \"reviewBody\": \"Ran this as my negative from the battery switch to the bus bar last spring. Cut clean, took a lug and heat shrink nicely, and the tinned strands look great. No regrets buying the whole spool.\"\n        },\n        {\n            \"@type\": \"Review\",\n            \"author\": {\n                \"@type\": \"Person\",\n                \"name\": \"M. Alvarez\"\n            },\n            \"reviewRating\": {\n                \"@type\": \"Rating\",\n                \"ratingValue\": \"5\",\n                \"bestRating\": \"5\"\n            },\n            \"datePublished\": \"2025-04-09\",\n            \"reviewBody\": \"Used it to rewire the grounds on my center console. Tinned copper is the only way to go down here in the salt. Two seasons in and everything's still bright inside the lugs.\"\n        },\n        {\n            \"@type\": \"Review\",\n            \"author\": {\n                \"@type\": \"Person\",\n                \"name\": \"R. Keller\"\n            },\n            \"reviewRating\": {\n                \"@type\": \"Rating\",\n                \"ratingValue\": \"4\",\n                \"bestRating\": \"5\"\n            },\n            \"datePublished\": \"2025-08-02\",\n            \"reviewBody\": \"Good heavy cable at a fair price. Just remember it's bare cable, so budget for lugs and a real crimper. Once it's on, it's solid.\"\n        }\n    ],\n    \"aggregateRating\": {\n        \"@type\": \"AggregateRating\",\n        \"ratingValue\": \"4.7\",\n        \"reviewCount\": \"38\",\n        \"bestRating\": \"5\"\n    }\n}\n\u003c\/script\u003e\n","brand":"Sea-Dog","offers":[{"title":"Default Title","offer_id":45000629452893,"sku":"2007900","price":210.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_190a2ec7-25e7-4537-9513-3287277d2948.png?v=1788748113","url":"https:\/\/nvnmarine.com\/products\/sea-dog-4-awg-black-battery-cable-100-ft-tinned-spool","provider":"NVN Marine","version":"1.0","type":"link"}