{"product_id":"12v-350ah-lithium-marine-battery","title":"Abyss Battery  12V 350Ah Dual Purpose Lithium Marine House Battery - AB-12V350-BT","description":"\u003ch2 style=\"text-align: left;\"\u003eAbyss Battery  12V 350Ah Dual Purpose Lithium Marine House Battery - AB-12V350-BT\u003c\/h2\u003e\n\u003cp style=\"text-align: left;\"\u003eThe  is a high capacity performance Lithium-ion battery engineered with the strongest 200A BMS rating of its class. This battery is equipped with built in Bluetooth connection and ideal for off-grid living, energy storage applications, starting generators, and large outboard or diesel motors. \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eDesigned for powering Seakeeper systems, chill plates, microwaves, and A\/C. This battery is a power house you can depend on. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003eThe module's inherent safety, extended cell life, and zero maintenance offers end users a more reliable battery alternative by performing with more than twice the run-time and \u0026lt;70% of the weight of similarly sized AGM batteries. Our integrated Battery Management System is designed to operate seamlessly with any application and manages all of the modules system parameters in real-time.\u003c\/p\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"rkvi15\" data-start=\"27\" data-end=\"213\"\u003e\n\u003cstrong data-start=\"29\" data-end=\"63\"\u003eExtreme-capacity marine power:\u003c\/strong\u003e The ABYSS® AB-12V350-BT is a \u003cstrong data-start=\"93\" data-end=\"135\" data-is-only-node=\"\"\u003e12V 350Ah dual-purpose lithium battery\u003c\/strong\u003e designed for large-scale house loads and demanding marine electrical systems.\u003c\/li\u003e\n\u003cli data-section-id=\"fjabws\" data-start=\"215\" data-end=\"408\"\u003e\n\u003cstrong data-start=\"217\" data-end=\"252\"\u003eMassive onboard energy reserve:\u003c\/strong\u003e Delivers long-duration power for \u003cstrong data-start=\"286\" data-end=\"360\" data-is-only-node=\"\"\u003eelectronics, refrigeration, lighting, pumps, and heavy accessory loads\u003c\/strong\u003e, ideal for extended offshore or liveaboard use.\u003c\/li\u003e\n\u003cli data-section-id=\"fnybvb\" data-start=\"410\" data-end=\"568\"\u003e\n\u003cstrong data-start=\"412\" data-end=\"440\"\u003eDual-purpose capability:\u003c\/strong\u003e Engineered to support both \u003cstrong data-start=\"468\" data-end=\"521\" data-is-only-node=\"\"\u003ehouse power and engine starting support functions\u003c\/strong\u003e, reducing the need for multiple battery banks.\u003c\/li\u003e\n\u003cli data-section-id=\"eobw3f\" data-start=\"570\" data-end=\"729\"\u003e\n\u003cstrong data-start=\"572\" data-end=\"607\"\u003eStable high-output performance:\u003c\/strong\u003e Maintains consistent voltage under heavy load, ensuring reliable operation of sensitive marine electronics and inverters.\u003c\/li\u003e\n\u003cli data-section-id=\"ao0wqu\" data-start=\"731\" data-end=\"884\"\u003e\n\u003cstrong data-start=\"733\" data-end=\"768\"\u003eAdvanced LiFePO₄ safety system:\u003c\/strong\u003e Integrated \u003cstrong data-start=\"780\" data-end=\"798\" data-is-only-node=\"\"\u003eBMS protection\u003c\/strong\u003e guards against overcharge, deep discharge, overheating, and short-circuit conditions.\u003c\/li\u003e\n\u003cli data-section-id=\"15clfl1\" data-start=\"886\" data-end=\"1050\"\u003e\n\u003cstrong data-start=\"888\" data-end=\"923\"\u003eHeavy-duty marine construction:\u003c\/strong\u003e Built for harsh saltwater environments with \u003cstrong data-start=\"968\" data-end=\"1024\" data-is-only-node=\"\"\u003evibration resistance and corrosion-resistant housing\u003c\/strong\u003e for long-term durability.\u003c\/li\u003e\n\u003cli data-section-id=\"bgrq26\" data-start=\"1052\" data-end=\"1201\"\u003e\n\u003cstrong data-start=\"1054\" data-end=\"1086\"\u003eHigh inverter compatibility:\u003c\/strong\u003e Suitable for powering larger AC loads when paired with inverters, supporting full onboard electrical independence.\u003c\/li\u003e\n\u003cli data-section-id=\"1ds8kt5\" data-start=\"1203\" data-end=\"1354\"\u003e\n\u003cstrong data-start=\"1205\" data-end=\"1231\"\u003eLong service lifespan:\u003c\/strong\u003e Rated for \u003cstrong data-start=\"1242\" data-end=\"1265\" data-is-only-node=\"\"\u003e3000+ charge cycles\u003c\/strong\u003e, offering significant long-term cost efficiency compared to traditional lead-acid banks.\u003c\/li\u003e\n\u003cli data-section-id=\"wo57gg\" data-start=\"1356\" data-end=\"1523\"\u003e\n\u003cstrong data-start=\"1358\" data-end=\"1394\"\u003eSystem simplification advantage:\u003c\/strong\u003e Replaces large multi-battery AGM setups with a \u003cstrong data-start=\"1442\" data-end=\"1483\" data-is-only-node=\"\"\u003esingle high-capacity lithium solution\u003c\/strong\u003e, reducing wiring complexity and weight.\u003c\/li\u003e\n\u003cli data-section-id=\"pqbznh\" data-start=\"1525\" data-end=\"1672\" data-is-last-node=\"\"\u003e\n\u003cstrong data-start=\"1527\" data-end=\"1562\"\u003eProfessional offshore solution:\u003c\/strong\u003e Ideal for large boats, yachts, and serious offshore users needing \u003cstrong data-start=\"1629\" data-end=\"1671\" data-is-only-node=\"\"\u003emaximum energy storage and reliability\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"0\" data-end=\"276\"\u003e\u003cstrong data-start=\"0\" data-end=\"55\"\u003eQ: What is the Abyss Battery AB-12V350-BT used for?\u003c\/strong\u003e\u003cbr data-start=\"55\" data-end=\"58\"\u003eA: A premium high-capacity 12V LiFePO₄ dual-purpose marine battery designed for large house loads and engine support in offshore boats, yachts, and off-grid marine power systems. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"278\" data-end=\"545\"\u003e\u003cstrong data-start=\"278\" data-end=\"337\"\u003eQ: What are the key specifications of the AB-12V350-BT?\u003c\/strong\u003e\u003cbr data-start=\"337\" data-end=\"340\"\u003eA: 12.8V nominal voltage, 350Ah capacity (~4.48kWh energy), IP65 marine-grade enclosure, Bluetooth BMS monitoring, and a heavy-duty 200A continuous discharge rating. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"547\" data-end=\"836\"\u003e\u003cstrong data-start=\"547\" data-end=\"583\"\u003eQ: What makes it “dual purpose”?\u003c\/strong\u003e\u003cbr data-start=\"583\" data-end=\"586\"\u003eA: It is engineered for both high-demand engine starting support and deep-cycle house power, capable of running large marine systems like refrigeration, A\/C, Seakeeper stabilization, and navigation electronics. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"838\" data-end=\"1051\"\u003e\u003cstrong data-start=\"838\" data-end=\"886\"\u003eQ: How powerful is its discharge capability?\u003c\/strong\u003e\u003cbr data-start=\"886\" data-end=\"889\"\u003eA: It supports up to ~200A continuous discharge with high peak surge capability for engine cranking and heavy load spikes. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1053\" data-end=\"1288\"\u003e\u003cstrong data-start=\"1053\" data-end=\"1097\"\u003eQ: Does it support Bluetooth monitoring?\u003c\/strong\u003e\u003cbr data-start=\"1097\" data-end=\"1100\"\u003eA: Yes, integrated Bluetooth BMS provides real-time monitoring of state of charge, voltage, current, temperature, and battery health via mobile app. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1290\" data-end=\"1508\"\u003e\u003cstrong data-start=\"1290\" data-end=\"1320\"\u003eQ: What is the cycle life?\u003c\/strong\u003e\u003cbr data-start=\"1320\" data-end=\"1323\"\u003eA: Around 3000 cycles at full depth of discharge and up to 6000 cycles at lighter discharge levels, significantly outlasting lead-acid batteries. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1510\" data-end=\"1786\"\u003e\u003cstrong data-start=\"1510\" data-end=\"1552\"\u003eQ: What systems is it best suited for?\u003c\/strong\u003e\u003cbr data-start=\"1552\" data-end=\"1555\"\u003eA: Offshore fishing boats, luxury yachts, and commercial marine systems needing a single high-capacity battery for both starting support and heavy house loads like electronics and appliances. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1788\" data-end=\"2033\"\u003e\u003cstrong data-start=\"1788\" data-end=\"1830\"\u003eQ: Is it safe for marine environments?\u003c\/strong\u003e\u003cbr data-start=\"1830\" data-end=\"1833\"\u003eA: Yes, it uses sealed LiFePO₄ chemistry with an integrated BMS and rugged construction designed for vibration, saltwater exposure, and harsh offshore conditions.\u003c\/p\u003e\n\u003ch5\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"qljnx0\" data-start=\"365\" data-end=\"559\"\u003e\n\u003cstrong data-start=\"367\" data-end=\"396\"\u003eCorrect charging profile:\u003c\/strong\u003e Use only a LiFePO₄ charger set to \u003cstrong data-start=\"431\" data-end=\"446\"\u003e14.4V ±0.2V\u003c\/strong\u003e. Avoid AGM\/lead-acid modes to prevent BMS imbalance or premature cutoff. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1lu3n9k\" data-start=\"560\" data-end=\"728\"\u003e\n\u003cstrong data-start=\"562\" data-end=\"587\"\u003eAvoid deep discharge:\u003c\/strong\u003e Recharge before \u003cstrong data-start=\"604\" data-end=\"618\"\u003e20–30% SOC\u003c\/strong\u003e to maximize lifespan (up to ~3000 cycles at full depth of discharge). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"dakndc\" data-start=\"729\" data-end=\"932\"\u003e\n\u003cstrong data-start=\"731\" data-end=\"763\"\u003eRespect high-current design:\u003c\/strong\u003e Do not exceed \u003cstrong data-start=\"778\" data-end=\"833\"\u003e200A continuous discharge \/ 800A peak (short burst)\u003c\/strong\u003e—important when running inverters, A\/C, or Seakeeper loads. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"k02k4d\" data-start=\"933\" data-end=\"1154\"\u003e\u003cstrong data-start=\"935\" data-end=\"959\"\u003eTemperature control:\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"1vwofyb\" data-start=\"964\" data-end=\"991\"\u003eCharge: \u003cstrong data-start=\"974\" data-end=\"989\"\u003e0°C to 55°C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1cu6h1j\" data-start=\"994\" data-end=\"1154\"\u003eDischarge: \u003cstrong data-start=\"1007\" data-end=\"1024\"\u003e−20°C to 60°C\u003c\/strong\u003e\u003cbr data-start=\"1024\" data-end=\"1027\"\u003eAvoid charging below freezing unless built-in heating system is active (if equipped). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"at7i2c\" data-start=\"1155\" data-end=\"1304\"\u003e\n\u003cstrong data-start=\"1157\" data-end=\"1182\"\u003eBluetooth monitoring:\u003c\/strong\u003e Regularly check SOC, voltage, temperature, and current to detect imbalance, alternator issues, or parasitic draw early.\u003c\/li\u003e\n\u003cli data-section-id=\"17ps24y\" data-start=\"1305\" data-end=\"1435\"\u003e\n\u003cstrong data-start=\"1307\" data-end=\"1326\"\u003eProper storage:\u003c\/strong\u003e Store at \u003cstrong data-start=\"1336\" data-end=\"1353\"\u003e50–70% charge\u003c\/strong\u003e in a cool, dry environment; avoid full charge storage in heat for long periods.\u003c\/li\u003e\n\u003cli data-section-id=\"nngd8z\" data-start=\"1436\" data-end=\"1566\"\u003e\n\u003cstrong data-start=\"1438\" data-end=\"1463\"\u003eTerminal maintenance:\u003c\/strong\u003e Tighten M8 terminals to spec—loose high-current connections can cause heat buildup and voltage drop.\u003c\/li\u003e\n\u003cli data-section-id=\"xl1760\" data-start=\"1567\" data-end=\"1709\"\u003e\n\u003cstrong data-start=\"1569\" data-end=\"1591\"\u003eMarine protection:\u003c\/strong\u003e Even with sealed housing, rinse salt\/dust buildup and keep connectors dry to prevent corrosion resistance increase.\u003c\/li\u003e\n\u003cli data-section-id=\"zw3d21\" data-start=\"1710\" data-end=\"1824\"\u003e\n\u003cstrong data-start=\"1712\" data-end=\"1743\"\u003eParallel system discipline:\u003c\/strong\u003e Only connect batteries at equal voltage\/SOC to avoid BMS stress and imbalance.\u003c\/li\u003e\n\u003cli data-section-id=\"dyc4px\" data-start=\"1825\" data-end=\"1951\"\u003e\n\u003cstrong data-start=\"1827\" data-end=\"1852\"\u003eLoad balancing habit:\u003c\/strong\u003e For large inverter systems (A\/C, microwave, etc.), stagger startup loads to reduce surge stress.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"Abyss Battery","offers":[{"title":"Bluetooth® \/ Group 8D","offer_id":45672062091455,"sku":"AB-12V350-BT","price":3324.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/abyss-battery-r-12v-350ah-dual-purpose-8d-marine-lithium-house-battery-abyss-battery-1.jpg?v=1780266320","url":"https:\/\/backyardprovider.com\/products\/12v-350ah-lithium-marine-battery","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}