{"product_id":"monster-marine-lithium-12v-300ah-dual-purpose-cranking-battery","title":"Monster Marine Lithium 12V 300Ah Dual Purpose Cranking Battery – 1500 CCA Bluetooth \"Sea Lion\"","description":"\u003cp style=\"font-size: 18px;\"\u003eThe Monster Marine Lithium \"Sea Lion\" is a 12V 300Ah dual-purpose lithium (LiFePO4) battery that both cranks your outboard engine and powers a full day of onboard electronics from a single battery. It is built for offshore and freshwater anglers who run heavy electronics packages and want to replace a traditional 12V AGM or lead-acid starting and house battery with one lithium unit.\u003c\/p\u003e\n\u003cp style=\"font-size: 18px;\"\u003eWith 300 amp-hours of capacity and 3,840 watt-hours of energy, the Sea Lion is designed for boats running multiple graphs, forward-facing sonar, 360 imaging, bait tanks, pumps, shallow-water anchors, and lighting. Its large capacity is intended for anglers who want multi-day runtime between charges rather than recharging after every trip. On the starting side, Monster Marine Lithium rates the battery at 1,500 cold cranking amps to turn over high-output 2-stroke and 4-stroke outboards.\u003c\/p\u003e\n\u003cp style=\"font-size: 18px;\"\u003eBuilt with Grade A LiFePO4 cells and an advanced Battery Management System (BMS), the Sea Lion is engineered for the demands of the marine environment. Bluetooth monitoring through the MMLithium app lets you check voltage, state of charge, and real-time performance from your phone. At 56 lbs, it weighs less than a comparable AGM battery bank, helping reduce overall boat weight.\u003c\/p\u003e\n\u003cp style=\"font-size: 18px;\"\u003eThe Sea Lion is a strong fit if you want a single high-capacity battery that starts your engine and runs a large electronics load, and you have a battery compartment that can accommodate its size (confirm fitment in the Compatibility tab before ordering).\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cp style=\"font-size: 18px;\"\u003eHere is what the Sea Lion offers and why each feature matters for your boat:\u003c\/p\u003e\n\u003cul style=\"font-size: 18px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Purpose Design:\u003c\/strong\u003e Built for both engine cranking and deep-cycle use, so one battery can handle starting and running your electronics instead of two separate batteries.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300Ah \/ 3,840Wh Capacity: \u003c\/strong\u003eA large energy reserve for running multiple graphs, sonar, bait tanks, pumps, and lights, supporting longer runtime between charges.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,500 CCA Starting Power: \u003c\/strong\u003eManufacturer-rated cold cranking amps to start high-output 2-stroke and 4-stroke outboards. CCA is provided as a starting-power reference for lithium.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth Monitoring: \u003c\/strong\u003eThe MMLithium app shows voltage, state of charge, and performance on your smartphone, so you can track how much power you have left on the water.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced BMS Protection: \u003c\/strong\u003eProtects against overcharge, over-discharge, over-temperature, short circuit, and includes single-cell protection for safer, more stable operation.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade A LiFePO4 Cells: \u003c\/strong\u003eLithium iron phosphate chemistry chosen for stability and long cycle life, rated by the manufacturer at 4,000+ cycles.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight Construction: \u003c\/strong\u003eAt 56 lbs, it weighs less than a comparable AGM setup, reducing boat weight and easing installation.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop-Post \u0026amp; M8 Bolt Terminals: \u003c\/strong\u003eA combination terminal type that gives you flexibility for different cable and connector setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\n\u003cp style=\"font-size: 18px;\"\u003eThe Sea Lion is a 12V dual-purpose lithium battery built to both crank an outboard or sterndrive engine and run a heavy onboard electronics load on the same battery. It is designed for anglers and offshore boaters who want to replace a traditional 12V AGM or lead-acid starting and house battery with a single lithium unit. Before ordering, confirm the fitment points below to make sure it works with your boat, your engine, and your charging setup.\u003c\/p\u003e\n\u003ch4 style=\"font-size: 18px;\"\u003e\u003cstrong\u003eWill it fit my battery compartment?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp style=\"font-size: 18px;\"\u003eThe Sea Lion measures 13.5 in (L) x 7.25 in (W) x 9.75 in (H) and weighs 56 lbs. This is slightly larger than a standard BCI Group 31 footprint, so it will not always drop into a molded Group 31 tray or battery box. Measure your battery compartment, tray, and hold-down before purchasing, especially on bass boats and center consoles with tight factory battery locations. The battery uses a top-post and M8 bolt terminal combination, so check that your existing cable ends are compatible or plan for the correct ring terminals.\u003c\/p\u003e\n\u003ch4 style=\"font-size: 18px;\"\u003e\u003cstrong\u003eEngine compatibility\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp style=\"font-size: 18px;\"\u003eAccording to Monster Marine Lithium, the Sea Lion has been tested as a cranking battery on the following engines:\u003c\/p\u003e\n\u003cul style=\"font-size: 18px;\"\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eMercury Pro XS (2-stroke and 4-stroke)\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eMercury Verado 4-stroke\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eYamaha SHO and 4-stroke (legacy and current)\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eYamaha HPDI\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eSuzuki 4-stroke\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eEvinrude 2-stroke\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eMerCruiser 4-stroke\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 18px;\"\u003eEngine manufacturers set their own guidance on lithium starting batteries, and that guidance can change by model year. Before installing any lithium cranking battery, confirm compatibility with your engine manufacturer or dealer and review your engine warranty terms, so you know the battery is approved for your specific motor and charging system.\u003c\/p\u003e\n\u003ch4 style=\"font-size: 18px;\"\u003e\u003cstrong\u003eSuitable applications\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul style=\"font-size: 18px;\"\u003e\n\u003cli\u003eOffshore and freshwater fishing boats running multiple graphs, forward-facing sonar, and 360 imaging\u003c\/li\u003e\n\u003cli\u003eBass boats and center consoles needing one battery for starting plus all-day electronics\u003c\/li\u003e\n\u003cli\u003eBoats running bait tanks, livewells, pumps, shallow-water anchors, and lighting\u003c\/li\u003e\n\u003cli\u003eMulti-day trips where recharging between outings is not always possible\u003c\/li\u003e\n\u003cli\u003eDirect replacement for a 12V AGM or lead-acid starting\/house battery in a compatible 12V system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style=\"font-size: 18px;\"\u003e\u003cstrong\u003eCharging compatibility\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp style=\"font-size: 18px;\"\u003eUse a lithium (LiFePO4) compatible charger with a charge voltage in the 14.4 to 14.6V range. Do not use a charger set to a lead-acid profile that exceeds this range. If you plan to charge from your engine while running, confirm your alternator's regulated output voltage is within the battery's charge range and consult your engine manufacturer's guidance on charging lithium batteries.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp style=\"font-size: 18px;\"\u003eThe specifications below are based on Monster Marine Lithium's published information for model MML-15300JB. Where the physical battery label differs from published values, the label is the authoritative source.\u003c\/p\u003e\n\u003ctable style=\"font-size: 18px;\" border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMML-15300JB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Chemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLithium Iron Phosphate (LiFePO4), Grade A cells\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnergy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3,840Wh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCold Cranking Amps (CCA)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1,500 (manufacturer-rated starting reference)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContinuous Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300A max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharge Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14.4 – 14.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCycle Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e56 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (L x W x H)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13.5 in x 7.25 in x 9.75 in (343 x 184 x 247 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTop Post \u0026amp; M8 Bolt Combo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBluetooth Monitoring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes, MMLithium app (iOS and Android)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransport Compliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUN\/DOT 38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15-Year Tiered Limited Warranty (register within 60 days of purchase)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 18px;\"\u003eNote: Monster Marine Lithium does not publish an IP rating, maximum charge current, self-heating specification, or series\/parallel rating for this model. If any of these apply to your installation, contact us.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cstyle\u003e\n.lbs-faq{font-size:18px;max-width:900px;}\n.lbs-faq .lbs-faq-item{border-bottom:1px solid #e2e2e2;}\n.lbs-faq .lbs-faq-item input{position:absolute;opacity:0;height:0;width:0;}\n.lbs-faq .lbs-faq-item label{display:block;cursor:pointer;padding:16px 40px 16px 4px;font-weight:600;position:relative;line-height:1.4;}\n.lbs-faq .lbs-faq-item label::after{content:\"+\";position:absolute;right:8px;top:14px;font-size:24px;font-weight:400;line-height:1;}\n.lbs-faq .lbs-faq-item input:checked ~ label::after{content:\"\\2212\";}\n.lbs-faq .lbs-faq-item .lbs-faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}\n.lbs-faq .lbs-faq-item input:checked ~ .lbs-faq-a{max-height:1200px;}\n.lbs-faq .lbs-faq-item .lbs-faq-a p{padding:0 4px 18px 4px;margin:0;}\n.lbs-faq .lbs-faq-item .lbs-faq-a ul{padding:0 4px 18px 24px;margin:0;}\n\u003c\/style\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq1\"\u003e \u003clabel for=\"faq1\"\u003eWhat is a dual-purpose battery, and can one battery really start my engine and run my electronics?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eA dual-purpose battery is designed to handle both engine starting and deep-cycle use. The Sea Lion is built to crank your outboard and then run onboard electronics from the same battery, which can let you replace a separate starting battery and house battery with one unit in a compatible 12V system. Confirm your engine and setup in the Compatibility tab before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq2\"\u003e \u003clabel for=\"faq2\"\u003eWill the Sea Lion fit a Group 31 battery box or tray?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eNot always. The Sea Lion measures 13.5 in x 7.25 in x 9.75 in, which is slightly larger than a standard BCI Group 31 footprint on all three dimensions. It may not drop into a molded Group 31 tray or box. Measure your battery compartment, tray, and hold-down before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq3\"\u003e \u003clabel for=\"faq3\"\u003eWhich engines is the Sea Lion compatible with?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eMonster Marine Lithium states the Sea Lion has been tested as a cranking battery on Mercury Pro XS (2-stroke and 4-stroke), Mercury Verado 4-stroke, Yamaha SHO and 4-stroke (legacy and current), Yamaha HPDI, Suzuki 4-stroke, Evinrude 2-stroke, and MerCruiser 4-stroke. Engine manufacturers set their own guidance on lithium starting batteries and it can change by model year, so confirm compatibility with your engine manufacturer or dealer and review your engine warranty terms before installing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq4\"\u003e \u003clabel for=\"faq4\"\u003eWhy is CCA listed if this is a lithium battery?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eCold cranking amps (CCA) is a rating originally developed for lead-acid batteries. Monster Marine Lithium provides the 1,500 CCA figure as a starting-power reference so you can compare it to the battery you are replacing. For lithium, the continuous discharge current (300A max on this model) is also a useful figure for understanding output.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq5\"\u003e \u003clabel for=\"faq5\"\u003eWhat charger should I use?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eUse a lithium (LiFePO4) compatible charger with a charge voltage in the 14.4 to 14.6V range. Do not use a charger set to a lead-acid profile that exceeds this range, as it can affect the battery. A lithium-appropriate charger helps keep the battery healthy and maintained during storage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq6\"\u003e \u003clabel for=\"faq6\"\u003eCan I charge it from my engine's alternator while running?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eCharging from an alternator is possible when the charging voltage stays within the battery's charge range, but lithium batteries have a different charge profile than lead-acid. Before relying on alternator charging, confirm your alternator's regulated output voltage is compatible and follow your engine manufacturer's guidance on charging lithium batteries.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq7\"\u003e \u003clabel for=\"faq7\"\u003eHow does the Bluetooth monitoring work?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eThe Sea Lion connects to the free MMLithium app (iOS and Android), where you can view voltage, state of charge, and real-time performance from your smartphone. This helps you keep track of how much power you have left during a day on the water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq8\"\u003e \u003clabel for=\"faq8\"\u003eMy state-of-charge reading looks off. Is the battery bad?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eNot necessarily. App-based state-of-charge readings can drift over time and may need recalibration, typically by fully charging the battery and letting the reading re-sync. A reading that looks off is often a calibration issue rather than a battery fault. If it persists after a full charge, contact Monster Marine Lithium support.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq9\"\u003e \u003clabel for=\"faq9\"\u003eCan I charge it in cold or freezing weather?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eLithium iron phosphate batteries generally should not be charged below freezing without a low-temperature protection or heating feature. Monster Marine Lithium does not publish a low-temperature charging or self-heating specification for this model, so confirm cold-weather charging guidance with the manufacturer before charging in freezing conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq10\"\u003e \u003clabel for=\"faq10\"\u003eDoes it have BMS protection?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eYes. The Sea Lion uses an advanced Battery Management System that provides overcharge, over-discharge, over-temperature, and short-circuit protection, along with single-cell protection. The BMS is designed to keep the battery operating within safe limits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq11\"\u003e \u003clabel for=\"faq11\"\u003eCan I connect multiple Sea Lion batteries in series or parallel?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eMonster Marine Lithium does not publish a series or parallel rating for this specific model. If you plan to build a higher-voltage or higher-capacity bank.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq12\"\u003e \u003clabel for=\"faq12\"\u003eHow much does it weigh, and is it hard to install?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eThe Sea Lion weighs 56 lbs, less than a comparable AGM battery bank of similar capacity. It uses a top-post and M8 bolt terminal combination for flexible cable connections. Make sure your battery tray and hold-down fit the battery's dimensions and that your cable ends match the terminals.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq13\"\u003e \u003clabel for=\"faq13\"\u003eWhat does the warranty cover?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eThe Sea Lion carries Monster Marine Lithium's tiered limited warranty. Coverage is strongest in the first five years (Tier 1), with repair-based and pro-rated coverage in later tiers, subject to charge-cycle limits and terms. The battery must be registered within 60 days of purchase to secure full coverage from the purchase date, and the warranty is non-transferable and applies to the lower 48 states. Review Monster Marine Lithium's full warranty terms for details.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"faq14\"\u003e \u003clabel for=\"faq14\"\u003eIs this battery right for me?\u003c\/label\u003e\n\u003cdiv class=\"lbs-faq-a\"\u003e\n\u003cp style=\"font-size: 18px;\"\u003eThe Sea Lion is a good match if you want a single high-capacity 12V battery that starts your engine and runs a large electronics load through multi-day trips, and your battery compartment can fit its size. If you only need a smaller starting battery or a dedicated trolling-motor battery, a lower-capacity model may suit you better. Reach out if you would like help matching a battery to your boat and engine.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ================= FAQPage JSON-LD (answers mirror the visible FAQ above) ================= --\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Monster Marine Lithium","offers":[{"title":"Default Title","offer_id":48365060522242,"sku":"MML-15300JB","price":2399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0723\/3660\/5442\/files\/MonsterMarine12V300DualPurpose.webp?v=1787361120","url":"https:\/\/www.lithiumbatterysupply.com\/products\/monster-marine-lithium-12v-300ah-dual-purpose-cranking-battery","provider":"Lithium Battery Supply","version":"1.0","type":"link"}