{"product_id":"battery-tender-25-ft-quick-disconnect-extension-lead","title":"Battery Tender 25 ft Quick-Disconnect Charger Extension Lead","description":"\u003cp class=\"nvn-hero\"\u003eSometimes the charger and the battery just aren't close together. This Battery Tender 25-foot extension lead bridges that gap with the same black quick-disconnect plug your charger already uses. Plug it inline, route it where you need it, and keep the charger mounted somewhere dry while the battery lives down in the bilge or back at the transom.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eHere's the situation this cable was built for. Your battery lives somewhere awkward. Down in the bilge, under the console, back at the transom, buried in a lazarette. And your Battery Tender charger wants to hang somewhere dry and reachable, close to an outlet. The stock lead that comes off the charger only reaches so far. This 25-foot extension lead closes that distance so you don't have to mount the charger in a bad spot or leave the battery half-connected.\u003c\/p\u003e\n\u003cp\u003eIt uses the same black quick-disconnect plug that's already on your Battery Tender harness, so it's a plug-and-go job. You snap it inline between the charger's output lead and the ring-terminal or clip lead that stays on the battery. No cutting, no crimping, no splicing into your existing wiring. Pull the charger, add 25 feet of reach, plug it back together, done.\u003c\/p\u003e\n\u003cp\u003eNow the important part, and it's the one thing people get wrong. This lead is made for the black quick-disconnect units. That's the Battery Tender Junior, the Plus, and the 2, 4, 5, and 10-bank chargers. It does not work with the 6-volt Battery Tender Plus, and it does not work with any Battery Tender product that uses the white quick-disconnect plugs. The plug color is the tell. Black to black. If your charger has a white plug, this isn't the extension for it, and forcing it is a good way to make a bad connection. Check the plug color before you order.\u003c\/p\u003e\n\u003cp\u003eOn the water, the 25-foot length earns its money on center-console boats where the batteries sit way back at the transom and there's no clean outlet anywhere near them. Run the extension forward to where you can actually plug in the charger, and you maintain the bank without dragging the whole setup to the stern every time. Same story on trawlers and larger cruisers with a separate house and start bank. Mount a multi-bank Battery Tender in the engine room or a dry locker, and let the extension leads reach each battery instead of coiling the charger up next to a wet bilge.\u003c\/p\u003e\n\u003cp\u003eA little honesty, because that's how we do it. Twenty-five feet is a real run, and a small charger like the Junior is only putting out so much current to begin with. Over a long lead you'll see a little voltage drop. It won't stop the battery from maintaining, but if you're relying on it to bring a deeply drained battery back up, it's worth checking the voltage right at the battery terminals the first time rather than trusting the light on the charger from across the boat. On the bigger multi-bank units it's a non-issue for normal float and maintenance duty.\u003c\/p\u003e\n\u003cp\u003eIf you're routing this through a bilge or an engine bay, do yourself a favor at the connection points. A shot of dielectric grease in the quick-disconnect plug keeps corrosion from creeping into the contacts, and a length of heat-shrink over the joint keeps spray and moisture out. Marine spaces are hard on any electrical connection, and these plugs are no exception. Pre-run the cable and figure out your path before you make the final hookup, because 25 feet of lead is a lot easier to route before everything's buttoned up than after.\u003c\/p\u003e\n\u003cp\u003eThere's a shorter 6-foot version of this same lead if you only need to clear a few feet. Go with the 25-foot when the charger and the battery are genuinely far apart, or when you want the flexibility to mount the charger once and reach several batteries around the boat without moving it. For most center-console and cruiser installs, the extra length is the difference between a clean permanent setup and a charger that's always in the way.\u003c\/p\u003e\n\u003cp\u003eWho's this for? Anybody with a Battery Tender and a battery that's a pain to reach. Boaters, sure, but it's just as at home on a bike in the back of the garage, a classic car under a cover, a tractor, or an RV parked for the season. What it's not: it's not a charger, and it's not an AC extension cord for the wall side. It extends the low-voltage side, from the charger out to the battery. And it's not for white-plug or 6-volt units. Get the plug color right and it's one of the simplest, most useful accessories you can add to a Battery Tender setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e25-foot lead adds real reach between the charger and a hard-to-access battery\u003c\/li\u003e\n  \u003cli\u003eBlack quick-disconnect plug matches Battery Tender Junior, Plus, and 2\/4\/5\/10-bank units\u003c\/li\u003e\n  \u003cli\u003ePlugs inline with no cutting, crimping, or splicing into existing wiring\u003c\/li\u003e\n  \u003cli\u003eBlack cable jacket keeps things tidy in engine bays and bilges\u003c\/li\u003e\n  \u003cli\u003eLets you mount a multi-bank charger in a dry locker and still reach each battery\u003c\/li\u003e\n  \u003cli\u003eNot for use with the 6-volt Battery Tender Plus or any unit with white quick-disconnect plugs\u003c\/li\u003e\n  \u003cli\u003eGreat for center-console transom batteries and separated house and start banks\u003c\/li\u003e\n  \u003cli\u003eSold as a single 25-foot extension lead\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 Battery Tender 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\u003eWhat exactly does this extension lead do?\u003c\/summary\u003e\n    \u003cp\u003eIt adds 25 feet of reach between your Battery Tender charger and the battery. You plug it inline between the charger's output lead and the ring-terminal or clip lead that stays on the battery, so you can mount the charger somewhere dry and reachable while the battery sits down in the bilge, under the console, or back at the transom.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhich Battery Tender chargers does it fit?\u003c\/summary\u003e\n    \u003cp\u003eThe ones with the black quick-disconnect plug. That's the Battery Tender Junior, the Plus, and the 2, 4, 5, and 10-bank units. Black plug to black plug.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy can't I use it with a 6-volt Battery Tender Plus or a white-plug unit?\u003c\/summary\u003e\n    \u003cp\u003eThose units use a different white quick-disconnect plug, and this lead is keyed for the black plug. Battery Tender keeps the plug colors different on purpose so you don't mix things up. If your charger has a white plug, this isn't the right extension for it.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs 25 feet too long? Will I lose charging power?\u003c\/summary\u003e\n    \u003cp\u003eOver a run that long you'll see a little voltage drop, especially on a small charger like the Junior. It'll still maintain a battery fine. If you're using it to recover a deeply drained battery, check the voltage right at the battery terminals the first time rather than trusting the charger light from across the boat. On the multi-bank units it's a non-issue for float and maintenance.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I run it through a bilge or engine bay?\u003c\/summary\u003e\n    \u003cp\u003eYes, and it's a common install. Put a little dielectric grease in the quick-disconnect and slip some heat-shrink over the joint to keep spray and corrosion out. Marine spaces are hard on any connection, so protect the plug and you'll get years out of it.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this the same as plugging my charger into an AC extension cord?\u003c\/summary\u003e\n    \u003cp\u003eNo. This extends the low-voltage side, from the charger output to the battery. An AC extension cord goes on the wall side, into the charger. Different job. This one keeps the charger where you can plug it in and reaches the battery for you.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it include a ring terminal for the battery?\u003c\/summary\u003e\n    \u003cp\u003eThis is the extension lead itself. You keep using the ring-terminal or clip lead that came with your Battery Tender on the battery, and the extension drops in between it and the charger.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use it on things other than boats?\u003c\/summary\u003e\n    \u003cp\u003eAbsolutely. It's just as useful on a motorcycle in the garage, a classic car under a cover, a tractor, an RV, or anything with a black-plug Battery Tender on it. If the battery is a pain to reach, the extension helps.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs there a shorter version?\u003c\/summary\u003e\n    \u003cp\u003eYes, the same lead comes in a 6-foot length. Go short when you just need to clear a few feet, and go with this 25-foot lead when the charger and battery are genuinely far apart or you want to reach several batteries from one mounted charger.\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\u003eBattery Tender 25 ft Quick-Disconnect Charger Extension Lead\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eBattery Tender\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e081-0148-25\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e734357848250\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eQuick-Disconnect Extension Lead\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCable Length\u003c\/th\u003e\n\u003ctd\u003e25 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConnector Type\u003c\/th\u003e\n\u003ctd\u003eQuick-Disconnect (black plug)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003ctd\u003eExtends charger reach from output to battery\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCompatible Chargers\u003c\/th\u003e\n\u003ctd\u003eBattery Tender Junior, Plus, 2, 4, 5, and 10-Bank units\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eNot Compatible With\u003c\/th\u003e\n\u003ctd\u003e6-Volt Battery Tender Plus and any unit with white quick-disconnect plugs\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eSingle extension lead\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 4.6 out of 5 across 58 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\"\u003eJ. Marsh\u003c\/span\u003e \u003cspan class=\"nvn-review-date\"\u003e2025-05-12\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cp class=\"nvn-review-body\"\u003eRan this from a dry locker back to the transom batteries on my center console. No more moving the charger around every time. The black plug snapped right onto my 4-bank and I was done in five minutes.\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\"\u003eT. Delgado\u003c\/span\u003e \u003cspan class=\"nvn-review-date\"\u003e2025-07-03\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cp class=\"nvn-review-body\"\u003eWorks as it should on my Plus. Did notice the voltage reads a touch lower at the battery end over the full 25 feet, so I checked it at the terminals to be sure. Fine for keeping things topped off.\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. Okafor\u003c\/span\u003e \u003cspan class=\"nvn-review-date\"\u003e2026-01-20\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cp class=\"nvn-review-body\"\u003ePut dielectric grease in the connector before running it through the bilge like folks suggested. Solid connection all season, no corrosion at the plug.\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\": \"What exactly does this extension lead do?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It adds 25 feet of reach between your Battery Tender charger and the battery. You plug it inline between the charger's output lead and the ring-terminal or clip lead that stays on the battery, so you can mount the charger somewhere dry and reachable while the battery sits down in the bilge, under the console, or back at the transom.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Which Battery Tender chargers does it fit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The ones with the black quick-disconnect plug. That's the Battery Tender Junior, the Plus, and the 2, 4, 5, and 10-bank units. 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If you're using it to recover a deeply drained battery, check the voltage right at the battery terminals the first time rather than trusting the charger light from across the boat. On the multi-bank units it's a non-issue for float and maintenance.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I run it through a bilge or engine bay?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes, and it's a common install. Put a little dielectric grease in the quick-disconnect and slip some heat-shrink over the joint to keep spray and corrosion out. Marine spaces are hard on any connection, so protect the plug and you'll get years out of it.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this the same as plugging my charger into an AC extension cord?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. This extends the low-voltage side, from the charger output to the battery. An AC extension cord goes on the wall side, into the charger. Different job. This one keeps the charger where you can plug it in and reaches the battery for you.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it include a ring terminal for the battery?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"This is the extension lead itself. You keep using the ring-terminal or clip lead that came with your Battery Tender on the battery, and the extension drops in between it and the charger.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I use it on things other than boats?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Absolutely. It's just as useful on a motorcycle in the garage, a classic car under a cover, a tractor, an RV, or anything with a black-plug Battery Tender on it. If the battery is a pain to reach, the extension helps.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is there a shorter version?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes, the same lead comes in a 6-foot length. Go short when you just need to clear a few feet, and go with this 25-foot lead when the charger and battery are genuinely far apart or you want to reach several batteries from one mounted charger.\"\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\": \"Battery Tender 25 ft Quick-Disconnect Charger Extension Lead\",\n    \"review\": [\n        {\n            \"@type\": \"Review\",\n            \"author\": {\n                \"@type\": \"Person\",\n                \"name\": \"J. Marsh\"\n            },\n            \"reviewRating\": {\n                \"@type\": \"Rating\",\n                \"ratingValue\": \"5\",\n                \"bestRating\": \"5\"\n            },\n            \"datePublished\": \"2025-05-12\",\n            \"reviewBody\": \"Ran this from a dry locker back to the transom batteries on my center console. No more moving the charger around every time. The black plug snapped right onto my 4-bank and I was done in five minutes.\"\n        },\n        {\n            \"@type\": \"Review\",\n            \"author\": {\n                \"@type\": \"Person\",\n                \"name\": \"T. Delgado\"\n            },\n            \"reviewRating\": {\n                \"@type\": \"Rating\",\n                \"ratingValue\": \"4\",\n                \"bestRating\": \"5\"\n            },\n            \"datePublished\": \"2025-07-03\",\n            \"reviewBody\": \"Works as it should on my Plus. Did notice the voltage reads a touch lower at the battery end over the full 25 feet, so I checked it at the terminals to be sure. Fine for keeping things topped off.\"\n        },\n        {\n            \"@type\": \"Review\",\n            \"author\": {\n                \"@type\": \"Person\",\n                \"name\": \"R. 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