{"product_id":"noco-nlx31-group-31-lithium-marine-battery-120ah","title":"NOCO NLX31 Group 31 Lithium Dual-Purpose Marine Battery","description":"\u003cp class=\"nvn-hero\"\u003eThe NOCO NLX31 is a Group 31 lithium (LiFePO4) dual-purpose marine battery that both starts your engine and powers your accessories. With 120Ah of capacity, 1600 amps of peak cranking current and an IP66-rated case, it replaces two lead-acid batteries with one lighter, longer-lasting unit.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eIf you've ever hauled a pair of heavy lead-acid batteries down a dock, the NOCO NLX31 will feel like a revelation. This is a Group 31 lithium dual-purpose marine battery, which means it does two jobs that used to need two separate batteries: it delivers the high burst of current to crank your engine, and it provides the steady, deep-cycle power to run electronics, trolling motors, livewells, stereo and lights all day. One battery, both roles, a whole lot less weight.\u003c\/p\u003e\n\u003cp\u003eThe chemistry is what makes it possible. The NLX31 uses lithium iron phosphate (LiFePO4) cells, the safest and most stable lithium chemistry for marine use. Compared to traditional lead-acid, LiFePO4 gives you far more usable capacity, a flatter voltage curve so your gear runs strong until the battery's nearly empty, and dramatically longer life. Where a flooded battery might give you a few hundred cycles, the NLX31 is rated for roughly 2,000 cycles at 100 percent depth of discharge, 4,000 cycles at 80 percent, and up to 10,000 cycles at 50 percent. For most boaters that's a decade or more of seasons from a single battery.\u003c\/p\u003e\n\u003cp\u003eCapacity is generous at 120 amp-hours, or 1536 watt-hours, and it's genuinely usable capacity thanks to the lithium chemistry. On the starting side, the NLX31 delivers 1600 amps of peak cranking current and handles 200 amps of continuous discharge, so it spins over big outboards and inboards with confidence, even on a cold morning. That combination of deep reserve and strong cranking is exactly what a dual-purpose battery should be, and it's why this one can genuinely replace a separate start and house battery on many boats.\u003c\/p\u003e\n\u003cp\u003eManaging all that power is an integrated Battery Management System (BMS). The BMS constantly watches the cells and protects against over-charging, over-discharging, over-current, short circuits and cell imbalance, while continuously monitoring temperature against extreme heat and cold. It uses bi-directional active cell balancing to keep every cell in step, which extends life and preserves capacity, and it needs no manual reset to recover from a protection event. In practical terms, that means you get the performance of lithium without babysitting it.\u003c\/p\u003e\n\u003cp\u003eNOCO built the NLX31 for the marine environment, not a lab bench. The case carries an IP66 rating, so it shrugs off dust and powerful water jets, and it operates from -4 to 122 degrees F (-20 to 50 degrees C), covering everything from a frosty launch to a blistering engine compartment. It weighs just 33 pounds, a fraction of the equivalent lead-acid setup, which lightens your boat and makes installation far easier on your back. The case measures 12.99 inches wide, 6.81 inches deep and 8.58 inches tall, matching the standard Group 31 footprint so it drops into existing battery trays.\u003c\/p\u003e\n\u003cp\u003eWiring is flexible thanks to a set of included terminal options. You get SAE posts, 3\/8-24 threaded terminals, and 3\/8-24 by 5\/16-24 threaded terminals, along with the bolts, nuts, covers and hex keys to set them up, plus a removable handle for easy carrying. That versatility means the NLX31 adapts to your existing cables instead of forcing you to rewire. Recharging is fast too, with the battery accepting up to a 1C charge rate when paired with a compatible lithium-capable charger.\u003c\/p\u003e\n\u003cp\u003eWe'd recommend the NLX31 to any serious boater ready to cut weight, add reserve capacity and stop replacing batteries every couple of seasons. It's backed by a 5-year limited warranty, and it ships with everything you need to install it.\u003c\/p\u003e\n\u003cp\u003eThink about how this changes a day on the water. You're not rationing your electronics to save the start battery, and you're not worried a long afternoon at anchor will leave you unable to fire the engine. The flat lithium voltage curve keeps your fish finder, lights and stereo running at full strength right down to the end of the charge, instead of fading as the voltage sags. When it's time to head in, the engine cranks like the battery is brand new. Fewer batteries, lighter load, longer life. That's the whole point.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003eGroup 31 dual-purpose design, starts the engine and runs house loads from one battery\u003c\/li\u003e\n  \u003cli\u003eLithium iron phosphate (LiFePO4) chemistry for safety, stability and long life\u003c\/li\u003e\n  \u003cli\u003e120Ah \/ 1536Wh of usable capacity\u003c\/li\u003e\n  \u003cli\u003e1600A peak cranking current and 200A continuous discharge\u003c\/li\u003e\n  \u003cli\u003eIntegrated BMS with over-charge, over-discharge, over-current, short-circuit and imbalance protection\u003c\/li\u003e\n  \u003cli\u003eBi-directional active cell balancing with no manual reset needed\u003c\/li\u003e\n  \u003cli\u003eRated for up to 10,000 cycles at 50 percent depth of discharge\u003c\/li\u003e\n  \u003cli\u003eIP66-rated case and -4 to 122 F operating range for real marine duty\u003c\/li\u003e\n  \u003cli\u003eLight 33 lb weight in a standard Group 31 footprint\u003c\/li\u003e\n  \u003cli\u003eMultiple included terminals plus a 5-year limited warranty\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 NOCO 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 does dual-purpose mean on the NLX31?\u003c\/summary\u003e\n    \u003cp\u003eIt means one battery handles both jobs that used to need two. It delivers the high burst of current to crank your engine and the steady deep-cycle power to run electronics, trolling motors and accessories. That lets it replace a separate starting and house battery on many boats.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow much capacity and cranking power does it have?\u003c\/summary\u003e\n    \u003cp\u003eThe NLX31 offers 120 amp-hours (1536 watt-hours) of capacity, and thanks to lithium chemistry nearly all of it is usable. For starting, it delivers 1600 amps of peak cranking current and handles 200 amps of continuous discharge.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow long will a lithium battery like this last?\u003c\/summary\u003e\n    \u003cp\u003eFar longer than lead-acid. The NLX31 is rated for about 2,000 cycles at 100 percent depth of discharge, 4,000 cycles at 80 percent, and up to 10,000 cycles at 50 percent. For most boaters that translates to many seasons from a single battery.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill it fit my existing battery tray?\u003c\/summary\u003e\n    \u003cp\u003eYes, in most cases. It uses the standard Group 31 footprint, measuring 12.99 inches wide, 6.81 inches deep and 8.58 inches tall, so it drops into typical Group 31 trays. At just 33 pounds, it's also far lighter than the lead-acid battery it replaces.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need a special charger?\u003c\/summary\u003e\n    \u003cp\u003eYou should use a charger that's compatible with lithium iron phosphate batteries to get the best performance and life. The NLX31 can accept up to a 1C charge rate for fast recharging when paired with a suitable lithium-capable charger.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs the battery protected against damage?\u003c\/summary\u003e\n    \u003cp\u003eYes. An integrated Battery Management System guards against over-charging, over-discharging, over-current, short circuits and cell imbalance, and it continuously monitors temperature. It uses active cell balancing and requires no manual reset to recover from a protection event.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan it handle a wet, harsh marine environment?\u003c\/summary\u003e\n    \u003cp\u003eIt's built for it. The case is rated IP66, so it resists dust and powerful water jets, and it operates from -4 to 122 degrees F. That covers cold-morning launches through hot engine compartments, which is exactly the range a boat battery sees.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat terminals and accessories are included?\u003c\/summary\u003e\n    \u003cp\u003eThe NLX31 ships with multiple terminal options, including SAE posts, 3\/8-24 threaded terminals and 3\/8-24 by 5\/16-24 threaded terminals, plus the bolts, nuts, covers and hex keys to install them. A removable handle is included for easy carrying, and it's backed by a 5-year limited warranty.\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\u003eNOCO NLX31 Group 31 Lithium Dual-Purpose Marine Battery\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eNOCO\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003eNLX31\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e046221220049\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBattery Chemistry\u003c\/th\u003e\n\u003ctd\u003eLithium Iron Phosphate (LiFePO4)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eGroup Size\u003c\/th\u003e\n\u003ctd\u003eGroup 31 (BCI)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eDual-purpose (starting and deep-cycle)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eNominal Voltage\u003c\/th\u003e\n\u003ctd\u003e12.8 V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCapacity\u003c\/th\u003e\n\u003ctd\u003e120 Ah \/ 1536 Wh\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePeak Cranking Current\u003c\/th\u003e\n\u003ctd\u003e1600 A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eContinuous Discharge\u003c\/th\u003e\n\u003ctd\u003e200 A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCycle Life\u003c\/th\u003e\n\u003ctd\u003eUp to 10,000 cycles at 50% DoD\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBMS Protections\u003c\/th\u003e\n\u003ctd\u003eOver-charge, over-discharge, over-current, short-circuit, imbalance, temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCell Balancing\u003c\/th\u003e\n\u003ctd\u003eBi-directional active balancing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMax Charge Rate\u003c\/th\u003e\n\u003ctd\u003e1C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e33 lb (14.97 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDimensions (W x D x H)\u003c\/th\u003e\n\u003ctd\u003e12.99 x 6.81 x 8.58 in (330 x 173 x 218 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eTerminals\u003c\/th\u003e\n\u003ctd\u003eSAE posts, 3\/8-24 and 3\/8-24 x 5\/16-24 threaded (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003e-4 to 122 F (-20 to 50 C)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWater and Dust Rating\u003c\/th\u003e\n\u003ctd\u003eIP66\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e5-year limited\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\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 does dual-purpose mean on the NLX31?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It means one battery handles both jobs that used to need two. It delivers the high burst of current to crank your engine and the steady deep-cycle power to run electronics, trolling motors and accessories. That lets it replace a separate starting and house battery on many boats.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How much capacity and cranking power does it have?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The NLX31 offers 120 amp-hours (1536 watt-hours) of capacity, and thanks to lithium chemistry nearly all of it is usable. For starting, it delivers 1600 amps of peak cranking current and handles 200 amps of continuous discharge.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How long will a lithium battery like this last?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Far longer than lead-acid. The NLX31 is rated for about 2,000 cycles at 100 percent depth of discharge, 4,000 cycles at 80 percent, and up to 10,000 cycles at 50 percent. For most boaters that translates to many seasons from a single battery.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will it fit my existing battery tray?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes, in most cases. It uses the standard Group 31 footprint, measuring 12.99 inches wide, 6.81 inches deep and 8.58 inches tall, so it drops into typical Group 31 trays. At just 33 pounds, it's also far lighter than the lead-acid battery it replaces.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I need a special charger?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"You should use a charger that's compatible with lithium iron phosphate batteries to get the best performance and life. The NLX31 can accept up to a 1C charge rate for fast recharging when paired with a suitable lithium-capable charger.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is the battery protected against damage?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. An integrated Battery Management System guards against over-charging, over-discharging, over-current, short circuits and cell imbalance, and it continuously monitors temperature. It uses active cell balancing and requires no manual reset to recover from a protection event.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can it handle a wet, harsh marine environment?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's built for it. The case is rated IP66, so it resists dust and powerful water jets, and it operates from -4 to 122 degrees F. That covers cold-morning launches through hot engine compartments, which is exactly the range a boat battery sees.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What terminals and accessories are included?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The NLX31 ships with multiple terminal options, including SAE posts, 3\/8-24 threaded terminals and 3\/8-24 by 5\/16-24 threaded terminals, plus the bolts, nuts, covers and hex keys to install them. A removable handle is included for easy carrying, and it's backed by a 5-year limited warranty.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"NOCO","offers":[{"title":"Default Title","offer_id":44782639874141,"sku":"2006780","price":1068.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_229fbe30-eaaf-4909-babc-5c271698d078.jpg?v=1784854542","url":"https:\/\/nvnmarine.com\/products\/noco-nlx31-group-31-lithium-marine-battery-120ah","provider":"NVN Marine","version":"1.0","type":"link"}