{"product_id":"12v-300ah-cranking-deep-cycle-lithium-battery-dual-purpose-pro-series","title":"12V 300Ah Cranking \u0026 Deep Cycle Lithium Battery (Dual Purpose) - Pro Series","description":"\n\u003cdiv style=\"font-family:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif; font-size:15px; line-height:1.6; color:#2D3748; text-transform:none; max-width:1100px; margin:0 auto;\"\u003e\n\n  \u003c!-- Hero --\u003e\n  \u003csection style=\"background:linear-gradient(135deg,#031725 0%,#06253D 62%,#02111F 100%); color:#FFFFFF; padding:34px 26px; border-radius:14px; margin-bottom:24px; border:1px solid rgba(46,145,229,0.35); box-shadow:0 14px 34px rgba(6,37,61,0.16);\"\u003e\n    \u003cdiv style=\"display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:24px; align-items:center;\"\u003e\n      \u003cdiv\u003e\n        \u003cp style=\"margin:0 0 10px 0; color:#7DC8FF; font-size:12px; font-weight:700; letter-spacing:0.14em; text-transform:uppercase;\"\u003e\n          Marine cranking and deep-cycle lithium power\n        \u003c\/p\u003e\n        \u003ch1 style=\"margin:0; color:#FFFFFF; font-size:34px; line-height:1.15; font-weight:700; letter-spacing:-0.02em; text-transform:none;\"\u003e\n          Epoch 12V 300Ah Group 8D Marine Cranking \u0026amp; Deep Cycle Lithium Battery\n        \u003c\/h1\u003e\n        \u003cp style=\"margin:12px 0 0 0; color:#D9ECFF; font-size:16px; line-height:1.55; max-width:780px;\"\u003e\n          A dual purpose marine battery built to start compatible outboards and power your house loads from one high-capacity Group 8D marine lithium battery.\n        \u003c\/p\u003e\n        \u003cp style=\"margin:18px 0 0 0; color:#FFFFFF; max-width:900px;\"\u003e\n          The Epoch 12V 300Ah marine lithium battery is a true dual purpose marine battery engineered for boaters and RV owners who need both cranking power and deep-cycle runtime. With 1,000A peak cranking current for up to 5 seconds, 300Ah (3.84kWh nominal), an IP67 dust-tight enclosure rated for temporary immersion, Bluetooth monitoring in the Epoch Pro app, CAN Link ports, internal heating, and an 81 lb BCI Group 8D case, it can replace separate lead-acid starting and house batteries in compatible systems.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003caside style=\"background:rgba(255,255,255,0.07); border:1px solid rgba(46,145,229,0.45); border-radius:12px; padding:22px;\"\u003e\n        \u003cp style=\"margin:0; color:#FFFFFF; font-size:20px; line-height:1.35; font-weight:700;\"\u003e\n          One battery. Two jobs. Less weight.\n        \u003c\/p\u003e\n        \u003cdiv style=\"height:1px; background:rgba(125,200,255,0.45); margin:18px 0;\"\u003e\u003c\/div\u003e\n        \u003cp style=\"margin:0; color:#D9ECFF; font-size:13px; letter-spacing:0.08em; text-transform:uppercase;\"\u003e\n          Group 8D Pro Series lithium\n        \u003c\/p\u003e\n      \u003c\/aside\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Quick specs --\u003e\n  \u003csection style=\"display:grid; grid-template-columns:repeat(auto-fit,minmax(145px,1fr)); gap:12px; margin-bottom:28px;\"\u003e\n    \u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:12px; padding:18px; text-align:center; box-shadow:0 4px 16px rgba(6,37,61,0.05);\"\u003e\n      \u003cdiv style=\"color:#1A202C; font-size:26px; line-height:1; font-weight:700; letter-spacing:-0.02em;\"\u003e300Ah\u003c\/div\u003e\n      \u003cdiv style=\"color:#2E91E5; font-size:12px; font-weight:700; letter-spacing:0.12em; text-transform:uppercase; margin-top:8px;\"\u003eCapacity\u003c\/div\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:12px; padding:18px; text-align:center; box-shadow:0 4px 16px rgba(6,37,61,0.05);\"\u003e\n      \u003cdiv style=\"color:#1A202C; font-size:26px; line-height:1; font-weight:700; letter-spacing:-0.02em;\"\u003e3.84kWh\u003c\/div\u003e\n      \u003cdiv style=\"color:#2E91E5; font-size:12px; font-weight:700; letter-spacing:0.12em; text-transform:uppercase; margin-top:8px;\"\u003eStored energy\u003c\/div\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:12px; padding:18px; text-align:center; box-shadow:0 4px 16px rgba(6,37,61,0.05);\"\u003e\n      \u003cdiv style=\"color:#1A202C; font-size:26px; line-height:1; font-weight:700; letter-spacing:-0.02em;\"\u003e1,000A\u003c\/div\u003e\n      \u003cdiv style=\"color:#2E91E5; font-size:12px; font-weight:700; letter-spacing:0.12em; text-transform:uppercase; margin-top:8px;\"\u003ePeak cranking\u003c\/div\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:12px; padding:18px; text-align:center; box-shadow:0 4px 16px rgba(6,37,61,0.05);\"\u003e\n      \u003cdiv style=\"color:#1A202C; font-size:26px; line-height:1; font-weight:700; letter-spacing:-0.02em;\"\u003e300A\u003c\/div\u003e\n      \u003cdiv style=\"color:#2E91E5; font-size:12px; font-weight:700; letter-spacing:0.12em; text-transform:uppercase; margin-top:8px;\"\u003eContinuous output\u003c\/div\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:12px; padding:18px; text-align:center; box-shadow:0 4px 16px rgba(6,37,61,0.05);\"\u003e\n      \u003cdiv style=\"color:#1A202C; font-size:26px; line-height:1; font-weight:700; letter-spacing:-0.02em;\"\u003eIP67\u003c\/div\u003e\n      \u003cdiv style=\"color:#2E91E5; font-size:12px; font-weight:700; letter-spacing:0.12em; text-transform:uppercase; margin-top:8px;\"\u003eImmersion-rated\u003c\/div\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:12px; padding:18px; text-align:center; box-shadow:0 4px 16px rgba(6,37,61,0.05);\"\u003e\n      \u003cdiv style=\"color:#1A202C; font-size:26px; line-height:1; font-weight:700; letter-spacing:-0.02em;\"\u003e81 lbs\u003c\/div\u003e\n      \u003cdiv style=\"color:#2E91E5; font-size:12px; font-weight:700; letter-spacing:0.12em; text-transform:uppercase; margin-top:8px;\"\u003eWeight\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Trust band --\u003e\n  \u003csection style=\"background:#F7FAFC; border:1px solid #E2E8F0; border-radius:14px; padding:22px; margin-bottom:32px;\"\u003e\n    \u003ch2 style=\"font-size:18px; font-weight:600; letter-spacing:0.05em; text-transform:uppercase; color:#1A202C; margin:0 0 12px 0; line-height:1.35;\"\u003e\n      Built to go further\n    \u003c\/h2\u003e\n    \u003cdiv style=\"display:grid; grid-template-columns:repeat(auto-fit,minmax(145px,1fr)); gap:10px;\"\u003e\n      \u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:14px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600;\"\u003e11-year warranty\u003c\/strong\u003e\n      \u003cspan style=\"color:#4A5568;\"\u003eManufacturer coverage\u003c\/span\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:14px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600;\"\u003ePro Series\u003c\/strong\u003e\n      \u003cspan style=\"color:#4A5568;\"\u003eHigh-output platform\u003c\/span\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:14px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600;\"\u003eBluetooth app\u003c\/strong\u003e\n      \u003cspan style=\"color:#4A5568;\"\u003eReal-time monitoring\u003c\/span\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:14px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600;\"\u003eCAN networking\u003c\/strong\u003e\n      \u003cspan style=\"color:#4A5568;\"\u003eLink in \/ Link out ports\u003c\/span\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:14px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600;\"\u003eIP67 rating\u003c\/strong\u003e\n      \u003cspan style=\"color:#4A5568;\"\u003eDust-tight, temporary immersion\u003c\/span\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:14px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600;\"\u003e6,000+ cycles\u003c\/strong\u003e\n      \u003cspan style=\"color:#4A5568;\"\u003eLong service life\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Intro section --\u003e\n  \u003csection style=\"margin-bottom:30px;\"\u003e\n    \u003ch2 style=\"font-size:24px; font-weight:700; letter-spacing:-0.01em; text-transform:none; color:#1A202C; margin:0 0 12px 0; line-height:1.25;\"\u003e\n      The Ultimate Dual-Purpose Powerhouse for Boats \u0026amp; RVs\n    \u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px 0; color:#2E91E5; font-weight:600;\"\u003e\n      Start your engine, run your electronics, and simplify your 12V power system.\n    \u003c\/p\u003e\n    \u003cp style=\"margin:0 0 14px 0;\"\u003e\n      Standard lithium deep-cycle batteries are not designed for the intense surge demand of a starter motor. This Epoch Pro Series battery is different. Its high-output BMS is engineered for compatible cranking applications while still delivering a massive 300Ah of deep-cycle storage for house loads, marine accessories, RV systems, and off-grid power.\n    \u003c\/p\u003e\n    \u003cp style=\"margin:0;\"\u003e\n      Instead of maintaining one battery for starting and another bank for house loads, this single Group 8D marine lithium battery can simplify wiring, reduce maintenance, save weight, and provide the confidence needed for long days on the water.\n    \u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Cranking and capacity --\u003e\n  \u003csection style=\"display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:22px; margin:30px 0; align-items:stretch;\"\u003e\n    \u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:14px; padding:22px; box-shadow:0 4px 16px rgba(6,37,61,0.05);\"\u003e\n      \u003ch3 style=\"font-size:19px; font-weight:700; color:#1A202C; margin:0 0 10px 0; line-height:1.3;\"\u003e\n        High-Surge Engine Cranking\n      \u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px 0; color:#2E91E5; font-weight:600;\"\u003e\n        Start compatible outboards with up to 1,000A peak output.\n      \u003c\/p\u003e\n      \u003cp style=\"margin:0;\"\u003e\n        The Epoch Pro Series BMS delivers 1,000A for up to 5 seconds and 800A for up to 10 seconds for engine cranking and short start-up surges (tested above 60% state of charge at 25°C). It is rated by peak current and duration rather than CCA, so check the engine maker's battery requirements. Epoch specifically calls out compatibility with Mercury 250 hp motors and other leading outboard brands when the complete electrical system is properly matched.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:14px; padding:22px; box-shadow:0 4px 16px rgba(6,37,61,0.05);\"\u003e\n      \u003ch3 style=\"font-size:19px; font-weight:700; color:#1A202C; margin:0 0 10px 0; line-height:1.3;\"\u003e\n        300Ah Deep Cycle Capacity for House Loads\n      \u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px 0; color:#2E91E5; font-weight:600;\"\u003e\n        Run electronics and accessories without constant voltage drop.\n      \u003c\/p\u003e\n      \u003cp style=\"margin:0;\"\u003e\n        Once the engine is off, 3.84kWh (nominal; plan runtime on about 3,072Wh) of LiFePO4 energy, within 300A continuous (150A recommended), can power multiple displays, sonar, radar, marine audio, pumps, livewells, lighting, refrigeration, and other onboard loads while maintaining the stable voltage curve lithium batteries are known for.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Weight and fit --\u003e\n  \u003csection style=\"margin:34px 0;\"\u003e\n    \u003ch2 style=\"font-size:24px; font-weight:700; letter-spacing:-0.01em; text-transform:none; color:#1A202C; margin:0 0 12px 0; line-height:1.25;\"\u003e\n      Ditch the Dead Weight: A Lighter Group 8D Upgrade\n    \u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px 0; color:#2E91E5; font-weight:600;\"\u003e\n      Replace heavy Group 8D lead-acid power with a lighter, smarter lithium platform.\n    \u003c\/p\u003e\n    \u003cdiv style=\"display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:22px; align-items:start;\"\u003e\n      \u003cdiv style=\"background:#F7FAFC; border:1px solid #E2E8F0; border-radius:12px; padding:20px;\"\u003e\n        \u003ch3 style=\"font-size:19px; font-weight:700; color:#1A202C; margin:0 0 10px 0; line-height:1.3;\"\u003e\n          Save about 49–79 lb\n        \u003c\/h3\u003e\n        \u003cp style=\"margin:0;\"\u003e\n          Traditional Group 8D lead-acid and AGM batteries often weigh around 130–160 lbs. The Epoch 12V 300Ah lithium battery weighs 81 lb (36.7 kg). It needs no watering or acid service; inspect it routinely.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv style=\"background:#F7FAFC; border:1px solid #E2E8F0; border-radius:12px; padding:20px;\"\u003e\n        \u003ch3 style=\"font-size:19px; font-weight:700; color:#1A202C; margin:0 0 10px 0; line-height:1.3;\"\u003e\n          Exact physical fitment\n        \u003c\/h3\u003e\n        \u003cp style=\"margin:0;\"\u003e\n          The Group 8D footprint measures 19.70 in L × 10.5 in W × 9.75 in H (500 × 267 × 248 mm). It is not a drop-in replacement for every lead-acid installation: always confirm your tray, cable clearance, terminal orientation, hold-downs, and lid clearance. Mount it upright; never on its side or upside down.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Marine tech --\u003e\n  \u003csection style=\"margin:34px 0;\"\u003e\n    \u003ch2 style=\"font-size:24px; font-weight:700; letter-spacing:-0.01em; text-transform:none; color:#1A202C; margin:0 0 12px 0; line-height:1.25;\"\u003e\n      Rugged Marine Tech \u0026amp; Unmatched Protection\n    \u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px 0; color:#2E91E5; font-weight:600;\"\u003e\n      Immersion-rated, heated, connected, and built for serious systems.\n    \u003c\/p\u003e\n    \u003cdiv style=\"display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:22px;\"\u003e\n      \u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:14px; padding:22px;\"\u003e\n        \u003ch3 style=\"font-size:19px; font-weight:700; color:#1A202C; margin:0 0 10px 0; line-height:1.3;\"\u003eIP67 Dust-Tight \u0026amp; Cold-Weather Heated\u003c\/h3\u003e\n        \u003cp style=\"margin:0;\"\u003eThe IP67-rated enclosure is dust-tight and protected against temporary immersion to 1 m for 30 minutes; it is not rated for submersion, water jets or pressure washing, so install it where standing water cannot collect (not in a bilge). With a charger connected in cold weather, the internal heater warms the battery to 10°C (50°F) before charging, so it charges down to -20°C (-4°F).\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:14px; padding:22px;\"\u003e\n        \u003ch3 style=\"font-size:19px; font-weight:700; color:#1A202C; margin:0 0 10px 0; line-height:1.3;\"\u003eSmart App Monitoring \u0026amp; CAN Networking\u003c\/h3\u003e\n        \u003cp style=\"margin:0;\"\u003eThe free Epoch Pro app shows state of charge, voltage, current, temperature and status alerts, and installs firmware updates over the air. CAN Link in and Link out ports network a bank; for Victron systems or NMEA 2000 networks, Epoch offers the Pro Series communications box.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Applications --\u003e\n  \u003csection style=\"display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:22px; margin:30px 0; align-items:start;\"\u003e\n    \u003cdiv\u003e\n      \u003ch2 style=\"font-size:18px; font-weight:600; letter-spacing:0.05em; text-transform:uppercase; color:#1A202C; margin:0 0 12px 0; line-height:1.35;\"\u003e\n        Compatible marine and RV applications\n      \u003c\/h2\u003e\n      \u003cp style=\"margin:0 0 14px 0; color:#2E91E5; font-weight:600;\"\u003e\n        Cranking, house power, RV, solar, and off-grid 12V power.\n      \u003c\/p\u003e\n      \u003cul style=\"list-style:none; padding:0; margin:0; display:grid; gap:8px;\"\u003e\n        \u003cli style=\"display:flex; gap:9px; align-items:flex-start; margin:0;\"\u003e\n      \u003cspan style=\"color:#5EBB46; font-weight:800; line-height:1.6;\"\u003e✓\u003c\/span\u003e\n      \u003cspan\u003e12V outboard starting battery applications where motor, alternator, wiring, and charging requirements match.\u003c\/span\u003e\n    \u003c\/li\u003e\n\u003cli style=\"display:flex; gap:9px; align-items:flex-start; margin:0;\"\u003e\n      \u003cspan style=\"color:#5EBB46; font-weight:800; line-height:1.6;\"\u003e✓\u003c\/span\u003e\n      \u003cspan\u003eDual purpose marine battery systems combining engine starting and house power.\u003c\/span\u003e\n    \u003c\/li\u003e\n\u003cli style=\"display:flex; gap:9px; align-items:flex-start; margin:0;\"\u003e\n      \u003cspan style=\"color:#5EBB46; font-weight:800; line-height:1.6;\"\u003e✓\u003c\/span\u003e\n      \u003cspan\u003eMercury 250 hp applications specifically called out by Epoch, plus other leading outboard brands when properly matched.\u003c\/span\u003e\n    \u003c\/li\u003e\n\u003cli style=\"display:flex; gap:9px; align-items:flex-start; margin:0;\"\u003e\n      \u003cspan style=\"color:#5EBB46; font-weight:800; line-height:1.6;\"\u003e✓\u003c\/span\u003e\n      \u003cspan\u003eMarine house battery replacement for electronics, fish finders, livewell pumps, bilge pumps, audio, refrigeration, and lighting.\u003c\/span\u003e\n    \u003c\/li\u003e\n\u003cli style=\"display:flex; gap:9px; align-items:flex-start; margin:0;\"\u003e\n      \u003cspan style=\"color:#5EBB46; font-weight:800; line-height:1.6;\"\u003e✓\u003c\/span\u003e\n      \u003cspan\u003eGroup 8D lead-acid replacements where the tray, hold-down, cable clearance, charging system and engine requirements are compatible.\u003c\/span\u003e\n    \u003c\/li\u003e\n\u003cli style=\"display:flex; gap:9px; align-items:flex-start; margin:0;\"\u003e\n      \u003cspan style=\"color:#5EBB46; font-weight:800; line-height:1.6;\"\u003e✓\u003c\/span\u003e\n      \u003cspan\u003eRVs, vans, overland rigs, and 12V house-power systems needing a 300Ah deep cycle lithium bank.\u003c\/span\u003e\n    \u003c\/li\u003e\n\u003cli style=\"display:flex; gap:9px; align-items:flex-start; margin:0;\"\u003e\n      \u003cspan style=\"color:#5EBB46; font-weight:800; line-height:1.6;\"\u003e✓\u003c\/span\u003e\n      \u003cspan\u003eSolar charge controller, inverter charger, alternator\/DC-to-DC, and off-grid 12V systems.\u003c\/span\u003e\n    \u003c\/li\u003e\n\u003cli style=\"display:flex; gap:9px; align-items:flex-start; margin:0;\"\u003e\n      \u003cspan style=\"color:#5EBB46; font-weight:800; line-height:1.6;\"\u003e✓\u003c\/span\u003e\n      \u003cspan\u003e12V parallel banks up to 16 batteries (4,800Ah, 61.44kWh).\u003c\/span\u003e\n    \u003c\/li\u003e\n\u003cli style=\"display:flex; gap:9px; align-items:flex-start; margin:0;\"\u003e\n      \u003cspan style=\"color:#5EBB46; font-weight:800; line-height:1.6;\"\u003e✓\u003c\/span\u003e\n      \u003cspan\u003eSeries systems up to 4 batteries for 24V, 36V, or 48V builds using matched batteries and Epoch guidance; with batteries in series, up to 4 strings in parallel (4S4P maximum).\u003c\/span\u003e\n    \u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n\n    \u003caside style=\"background:#FFF5F5; border:1px solid #FED7D7; border-left:5px solid #ED1B4A; border-radius:12px; padding:22px;\"\u003e\n      \u003ch3 style=\"margin:0 0 10px 0; color:#1A202C; font-size:16px; line-height:1.4; font-weight:700; text-transform:none;\"\u003e\n        Cranking compatibility note\n      \u003c\/h3\u003e\n      \u003cp style=\"margin:0;\"\u003e\n        This model is designed for compatible cranking and deep-cycle applications, but every installation should be verified. Confirm engine requirements, alternator behavior, charger settings, cable sizing, fuse protection, tray fitment, and terminal compatibility before replacing an existing starting battery.\n      \u003c\/p\u003e\n    \u003c\/aside\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Features --\u003e\n  \u003csection style=\"margin-bottom:32px;\"\u003e\n    \u003ch2 style=\"font-size:18px; font-weight:600; letter-spacing:0.05em; text-transform:uppercase; color:#1A202C; margin:24px 0 12px 0; line-height:1.35;\"\u003e\n      Battery features\n    \u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px 0; color:#2E91E5; font-weight:600;\"\u003e\n      Pro Series lithium performance with cranking power, deep-cycle runtime, and smart communications.\n    \u003c\/p\u003e\n    \u003cdiv style=\"display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:12px;\"\u003e\n      \u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003eDual-purpose marine battery\u003c\/strong\u003eDesigned for compatible outboard cranking and long-duration deep-cycle energy storage.\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003e1,000A peak discharge\u003c\/strong\u003eProvides up to 1,000A for 5 seconds and 800A for 10 seconds for high-surge starting loads.\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003e300Ah deep-cycle lithium capacity\u003c\/strong\u003eStores 3.84kWh for fish finders, livewells, pumps, lights, audio, refrigeration, and RV house loads.\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003e300A continuous BMS\u003c\/strong\u003eSupports high current charging and discharging for serious 12V power systems (150A recommended).\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003eIP67 enclosure\u003c\/strong\u003eDust-tight and protected against temporary immersion to 1 m for 30 minutes; not for submersion.\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003eIntegrated heating\u003c\/strong\u003eWith a charger connected, warms the battery to 10°C (50°F) before charging, down to -20°C (-4°F).\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003eBluetooth monitoring\u003c\/strong\u003eThe free Epoch Pro app for iOS and Android, with over-the-air firmware updates.\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003eCAN networking\u003c\/strong\u003eLink in \/ Link out ports; Victron and NMEA 2000 through the Pro Series communications box.\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003eGroup 8D footprint\u003c\/strong\u003eDesigned around a 19.70 in × 10.5 in × 9.75 in format for compatible Group 8D trays.\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003e81 lb lightweight upgrade\u003c\/strong\u003eCuts significant weight compared with many traditional 130–160 lb Group 8D lead-acid or AGM batteries.\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003eSeries and parallel expansion\u003c\/strong\u003eSupports up to 4 in series and up to 16 in parallel when installed to Epoch specifications (4S4P maximum).\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003e6,000+ cycle life\u003c\/strong\u003eRated at 0.2C, 80% DoD, to 80% of initial capacity at 25°C. No watering or acid service; inspect it routinely.\n    \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Accessories --\u003e\n  \u003csection style=\"background:#F7FAFC; border:1px solid #E2E8F0; border-radius:14px; padding:22px; margin:0 0 32px 0;\"\u003e\n    \u003ch2 style=\"font-size:18px; font-weight:600; letter-spacing:0.05em; text-transform:uppercase; color:#1A202C; margin:0 0 12px 0; line-height:1.35;\"\u003e\n      Compatible chargers and accessories\n    \u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px 0; color:#2E91E5; font-weight:600;\"\u003e\n      Recommended add-ons for charging, monitoring, and advanced integration.\n    \u003c\/p\u003e\n    \u003cdiv style=\"display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:10px;\"\u003e\n      \u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003eEpoch 12V 50A battery charger\u003c\/strong\u003eCompatible high-output charger for this Pro Series battery.\n    \u003c\/div\u003e\n      \u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003ePro Series 5 in touchscreen display\u003c\/strong\u003eOptional display accessory for easier battery visibility.\n    \u003c\/div\u003e\n      \u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003ePro Series communications box\u003c\/strong\u003eConnects the battery to Victron systems or NMEA 2000 networks.\n    \u003c\/div\u003e\n      \u003cdiv style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-radius:10px; padding:16px;\"\u003e\n      \u003cstrong style=\"display:block; color:#1A202C; font-weight:600; margin-bottom:4px;\"\u003eLithium charging equipment\u003c\/strong\u003eUse compatible inverter chargers, converters, solar charge controllers, and DC-to-DC chargers programmed to Epoch settings.\n    \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Specs --\u003e\n  \u003csection style=\"margin-bottom:34px;\"\u003e\n    \u003ch2 style=\"font-size:18px; font-weight:600; letter-spacing:0.05em; text-transform:uppercase; color:#1A202C; margin:24px 0 12px 0; line-height:1.35;\"\u003e\n      Technical Specifications \u0026amp; Cranking Performance\n    \u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px 0; color:#2E91E5; font-weight:600;\"\u003e\n      Cranking specs, deep-cycle capacity, dimensions, communication, and charging details.\n    \u003c\/p\u003e\n    \u003cdiv style=\"overflow-x:auto; border:1px solid #E2E8F0; border-radius:12px;\"\u003e\n      \u003ctable style=\"width:100%; min-width:720px; border-collapse:separate; border-spacing:0; font-size:15px;\"\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n        \u003cth colspan=\"2\" style=\"text-align:left; background:#1A202C; color:#FFFFFF; padding:12px 14px; font-size:13px; font-weight:700; letter-spacing:0.08em; text-transform:uppercase; border-bottom:1px solid #E2E8F0;\"\u003eGeneral\u003c\/th\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eBrand\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eEpoch Batteries\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eModel \/ SKU\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eDP12300H\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eSeries\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003ePro Series\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eBattery type\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eDual-purpose cranking and deep-cycle LiFePO4 battery\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eBattery group size\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eBCI Group 8D footprint\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eChemistry\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eLiFePO4 \/ lithium iron phosphate\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eCell configuration\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e4S3P\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eBluetooth\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eYes — free Epoch Pro app (iOS and Android), over-the-air firmware updates\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eCommunications\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eCAN (Link in \/ Link out ports); Victron and NMEA 2000 through the Pro Series communications box\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eInternal heating\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eYes — internal heating film; warms the battery to 10°C before charging (charger connected)\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eCycle life\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e6,000+ cycles\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e11-year manufacturer warranty\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr\u003e\n        \u003cth colspan=\"2\" style=\"text-align:left; background:#1A202C; color:#FFFFFF; padding:12px 14px; font-size:13px; font-weight:700; letter-spacing:0.08em; text-transform:uppercase; border-bottom:1px solid #E2E8F0;\"\u003eVoltage and capacity\u003c\/th\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eNominal voltage\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e12.8V\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eNominal capacity\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e300Ah\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eNominal energy\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e3.84kWh \/ 3840Wh\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eOperating voltage range\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e10.0V – 15.4V\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eMaximum charge voltage\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e15.4V listed maximum (not a charger target)\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eInternal resistance\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e\u0026lt;30mΩ\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr\u003e\n        \u003cth colspan=\"2\" style=\"text-align:left; background:#1A202C; color:#FFFFFF; padding:12px 14px; font-size:13px; font-weight:700; letter-spacing:0.08em; text-transform:uppercase; border-bottom:1px solid #E2E8F0;\"\u003eCurrent and cranking performance\u003c\/th\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eMax continuous discharge\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e300A\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eMax continuous charge current\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e300A (all sources combined)\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eRecommended charge current\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e150A\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eRecommended discharge current\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e150A\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eCranking peak current\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e1,000A for up to 5 seconds; 800A for up to 10 seconds (cranking and start-up surges; tested above 60% SOC at 25°C)\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eShort-circuit protection\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e1200A \/ 500µs\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr\u003e\n        \u003cth colspan=\"2\" style=\"text-align:left; background:#1A202C; color:#FFFFFF; padding:12px 14px; font-size:13px; font-weight:700; letter-spacing:0.08em; text-transform:uppercase; border-bottom:1px solid #E2E8F0;\"\u003eSeries and parallel expansion\u003c\/th\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eSeries connections\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eMax 4 batteries in series, up to 48V\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eParallel connections\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eMax 16 batteries in parallel\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eBank design note\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eUse matched batteries of the same model, age, capacity, and state of charge\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr\u003e\n        \u003cth colspan=\"2\" style=\"text-align:left; background:#1A202C; color:#FFFFFF; padding:12px 14px; font-size:13px; font-weight:700; letter-spacing:0.08em; text-transform:uppercase; border-bottom:1px solid #E2E8F0;\"\u003eTemperature\u003c\/th\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eCharge temperature range\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e-20°C to 55°C \/ -4°F to 131°F, with heating\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eDischarge temperature range\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e-20°C to 60°C \/ -4°F to 140°F\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eRecommended storage temperature\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e0°C to 35°C \/ 32°F to 95°F\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eLow-temperature charge protection\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eHeater warms the battery to 10°C before charging\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr\u003e\n        \u003cth colspan=\"2\" style=\"text-align:left; background:#1A202C; color:#FFFFFF; padding:12px 14px; font-size:13px; font-weight:700; letter-spacing:0.08em; text-transform:uppercase; border-bottom:1px solid #E2E8F0;\"\u003eDimensions and weight\u003c\/th\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eLength\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e19.7 in \/ 500 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eWidth\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e10.5 in \/ 267 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eHeight\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e9.75 in \/ 248 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eWeight\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e81 lbs \/ approx. 36.7 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr\u003e\n        \u003cth colspan=\"2\" style=\"text-align:left; background:#1A202C; color:#FFFFFF; padding:12px 14px; font-size:13px; font-weight:700; letter-spacing:0.08em; text-transform:uppercase; border-bottom:1px solid #E2E8F0;\"\u003eMechanical and protection\u003c\/th\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eEnclosure protection\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eIP67 (IEC 60529) — dust-tight, temporary immersion; not for submersion\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eTerminal type\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eM8 bolt\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eTerminal torque\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e8–10 N·m (71–89 in-lb)\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eOptional accessories\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003ePro Series 5 in touchscreen display and Pro Series communications box\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr\u003e\n        \u003cth colspan=\"2\" style=\"text-align:left; background:#1A202C; color:#FFFFFF; padding:12px 14px; font-size:13px; font-weight:700; letter-spacing:0.08em; text-transform:uppercase; border-bottom:1px solid #E2E8F0;\"\u003eRecommended charging settings\u003c\/th\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eBulk \/ absorption voltage\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e14.2V recommended (14.2V – 14.6V range)\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eFloat voltage\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e13.8V recommended (13.4V – 13.8V range); float off preferred where the charger allows\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eEqualization\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eDisabled\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eTemperature compensation\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e0mV\/°C (disabled)\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eRecommended charge rate\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eUp to 150A (50% of the battery or battery-bank capacity)\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eBattery charge temperature range\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e-20°C to 55°C \/ -4°F to 131°F, with heating\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eBattery discharge temperature range\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e-20°C to 60°C \/ -4°F to 140°F\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr\u003e\n        \u003cth colspan=\"2\" style=\"text-align:left; background:#1A202C; color:#FFFFFF; padding:12px 14px; font-size:13px; font-weight:700; letter-spacing:0.08em; text-transform:uppercase; border-bottom:1px solid #E2E8F0;\"\u003eCompliance\u003c\/th\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eCertifications\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eUL 1973 (certificate of compliance available), CE, RoHS; transport UN 38.3\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#F8FAFC;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eEnclosure rating\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003eIP67 (IEC 60529)\u003c\/td\u003e\n      \u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n        \u003ctd style=\"width:38%; vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#1A202C; font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n        \u003ctd style=\"vertical-align:top; padding:10px 14px; border-bottom:1px solid #E2E8F0; color:#2D3748;\"\u003e11-year manufacturer warranty\u003c\/td\u003e\n      \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- FAQ --\u003e\n  \u003csection style=\"margin-top:40px;\"\u003e\n    \u003cdiv style=\"text-align:center; margin-bottom:24px;\"\u003e\n      \u003cdiv style=\"display:inline-block; width:70px; height:2px; background:#2E91E5; vertical-align:middle; margin-right:16px;\"\u003e\u003c\/div\u003e\n      \u003cspan style=\"color:#2E91E5; text-transform:uppercase; letter-spacing:0.14em; font-size:12px; font-weight:700;\"\u003eFrequently asked questions\u003c\/span\u003e\n      \u003cdiv style=\"display:inline-block; width:70px; height:2px; background:#2E91E5; vertical-align:middle; margin-left:16px;\"\u003e\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003ch2 style=\"font-size:26px; font-weight:700; letter-spacing:-0.01em; color:#1A202C; margin:0 0 8px 0; line-height:1.2; text-align:center;\"\u003e\n      Epoch 12V 300Ah Dual Purpose Battery FAQs\n    \u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 26px 0; color:#2E91E5; font-weight:600; text-align:center;\"\u003e\n      Common questions about cranking, house loads, fitment, water protection, and Bluetooth monitoring.\n    \u003c\/p\u003e\n    \u003cdiv style=\"display:grid; grid-template-columns:1fr; gap:12px;\"\u003e\n      \u003cdetails style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-left:5px solid #2E91E5; border-radius:10px; padding:18px;\"\u003e\n      \u003csummary style=\"cursor:pointer; color:#1A202C; font-weight:700; font-size:16px; line-height:1.4;\"\u003eCan I really use a 12V 300Ah lithium battery for both engine starting and deep-cycle use?\u003c\/summary\u003e\n      \u003cp style=\"margin:14px 0 0 0; color:#2D3748;\"\u003eYes. The Epoch 12V 300Ah Group 8D LiFePO4 battery is designed for both engine starting and deep-cycle power applications. It delivers up to 1,000A of peak discharge for 5 seconds and 800A for 10 seconds, providing the power needed to start compatible marine engines. Epoch specifically notes compatibility with Mercury 250 hp motors when the electrical system is properly matched. In addition to starting power, the battery provides 300Ah of capacity for electronics, trolling motors, lighting, and other onboard equipment. Always verify compatibility with your engine and charging system before installation.\u003c\/p\u003e\n    \u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-left:5px solid #5EBB46; border-radius:10px; padding:18px;\"\u003e\n      \u003csummary style=\"cursor:pointer; color:#1A202C; font-weight:700; font-size:16px; line-height:1.4;\"\u003eDo I need separate starting and house batteries with a 12V 300Ah lithium battery?\u003c\/summary\u003e\n      \u003cp style=\"margin:14px 0 0 0; color:#2D3748;\"\u003eIn many compatible marine systems, no. A 12V 300Ah dual-purpose lithium battery combines engine-starting power and deep-cycle energy storage in a single unit. It can power fish finders, bilge pumps, lighting, marine audio, refrigeration, and other 12V accessories while still providing the cranking power needed to start compatible marine engines. Always verify compatibility with your electrical system before installation.\u003c\/p\u003e\n    \u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-left:5px solid #ED1B4A; border-radius:10px; padding:18px;\"\u003e\n      \u003csummary style=\"cursor:pointer; color:#1A202C; font-weight:700; font-size:16px; line-height:1.4;\"\u003eWill this fit in my current Group 8D marine battery tray?\u003c\/summary\u003e\n      \u003cp style=\"margin:14px 0 0 0; color:#2D3748;\"\u003eYes, this battery is designed around a Group 8D marine battery footprint. Epoch lists the dimensions as 19.70 in L × 10.5 in W × 9.75 in H (500 × 267 × 248 mm), and it must be mounted upright. If you currently run a Group 8D lead-acid or AGM battery, this lithium upgrade is intended to fit the same class of tray, but you should still verify tray dimensions, hold-downs, lid clearance, terminal access, and cable reach before ordering.\u003c\/p\u003e\n    \u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-left:5px solid #2E91E5; border-radius:10px; padding:18px;\"\u003e\n      \u003csummary style=\"cursor:pointer; color:#1A202C; font-weight:700; font-size:16px; line-height:1.4;\"\u003eHow much weight will I save on my boat?\u003c\/summary\u003e\n      \u003cp style=\"margin:14px 0 0 0; color:#2D3748;\"\u003eThe Epoch 12V 300Ah Group 8D lithium battery weighs 81 lbs. Many traditional Group 8D lead-acid or AGM batteries weigh roughly 130 to 160 lbs, so it is about 49 to 79 lbs lighter. Less stern weight can help improve boat balance, hole shot, draft, and fuel efficiency depending on the vessel.\u003c\/p\u003e\n    \u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-left:5px solid #5EBB46; border-radius:10px; padding:18px;\"\u003e\n      \u003csummary style=\"cursor:pointer; color:#1A202C; font-weight:700; font-size:16px; line-height:1.4;\"\u003eCan I wire these batteries together for even more power?\u003c\/summary\u003e\n      \u003cp style=\"margin:14px 0 0 0; color:#2D3748;\"\u003eYes. Epoch lists this Pro Series model as supporting up to 16 batteries in parallel for expanded 12V capacity and up to 4 batteries in series for 24V, 36V, or 48V systems. With batteries in series, up to 4 strings may be paralleled (4S4P maximum: 51.2V, 1,200Ah, 61.44kWh). Use matched batteries of the same model, age, capacity, and state of charge, check that their voltages are within 0.5V before connecting, and follow Epoch’s series\/parallel, communication, fusing, and charger guidance.\u003c\/p\u003e\n    \u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-left:5px solid #ED1B4A; border-radius:10px; padding:18px;\"\u003e\n      \u003csummary style=\"cursor:pointer; color:#1A202C; font-weight:700; font-size:16px; line-height:1.4;\"\u003eIs this battery safe to mount in a wet boat bilge?\u003c\/summary\u003e\n      \u003cp style=\"margin:14px 0 0 0; color:#2D3748;\"\u003eNo. Its IP67 enclosure is dust-tight and protected against temporary immersion to 1 m for 30 minutes, but the manual says not to install it where standing water can collect around the case or terminals, such as a bilge, and not to submerge or pressure-wash it. Mount it upright in a clean, dry, ventilated compartment, secured with its bracket, with a DC-rated main fuse close to the positive terminal.\u003c\/p\u003e\n    \u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-left:5px solid #2E91E5; border-radius:10px; padding:18px;\"\u003e\n      \u003csummary style=\"cursor:pointer; color:#1A202C; font-weight:700; font-size:16px; line-height:1.4;\"\u003eIs there a way to see how much battery life I have left while on the water?\u003c\/summary\u003e\n      \u003cp style=\"margin:14px 0 0 0; color:#2D3748;\"\u003eYes. Bluetooth monitoring is built in, so you can use the free Epoch Pro app on an iOS or Android device to view battery information such as state of charge, voltage, current, temperature, and battery status. The Pro Series also supports over-the-air firmware updates through the app.\u003c\/p\u003e\n    \u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-left:5px solid #5EBB46; border-radius:10px; padding:18px;\"\u003e\n      \u003csummary style=\"cursor:pointer; color:#1A202C; font-weight:700; font-size:16px; line-height:1.4;\"\u003eDoes this battery work with Victron systems?\u003c\/summary\u003e\n      \u003cp style=\"margin:14px 0 0 0; color:#2D3748;\"\u003eThrough the Pro Series communications box. The battery has CAN Link in and Link out ports for networking a bank; for Victron systems or NMEA 2000 networks, Epoch offers the Pro Series communications box. Contact Epoch for configuration support.\u003c\/p\u003e\n    \u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-left:5px solid #ED1B4A; border-radius:10px; padding:18px;\"\u003e\n      \u003csummary style=\"cursor:pointer; color:#1A202C; font-weight:700; font-size:16px; line-height:1.4;\"\u003eDoes it have cold-weather charging support?\u003c\/summary\u003e\n      \u003cp style=\"margin:14px 0 0 0; color:#2D3748;\"\u003eYes. It has internal heating. When a charger is connected in cold weather, the heater warms the battery to 10°C (50°F) and then switches to charging, so it charges down to -20°C (-4°F); leave the charger connected and allow up to 60 minutes. It discharges down to -20°C (-4°F).\u003c\/p\u003e\n    \u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-left:5px solid #2E91E5; border-radius:10px; padding:18px;\"\u003e\n      \u003csummary style=\"cursor:pointer; color:#1A202C; font-weight:700; font-size:16px; line-height:1.4;\"\u003eWhat charger should I use?\u003c\/summary\u003e\n      \u003cp style=\"margin:14px 0 0 0; color:#2D3748;\"\u003eUse a lithium-compatible charger, inverter charger, converter, solar charge controller, or DC-to-DC charger programmed for LiFePO4 batteries. The Epoch 12V 50A Lithium Battery Charger is compatible. Epoch’s recommended settings are 14.2V bulk\/absorption (14.2V–14.6V range), 13.8V float (13.4V–13.8V range; float off is preferred where the charger allows), equalization disabled, temperature compensation disabled, and up to 150A charge current (300A maximum from all sources combined). 15.4V is a listed maximum, not a charger target. For alternator charging, use a DC-to-DC charger or lithium-ready regulation where the engine maker allows it.\u003c\/p\u003e\n    \u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-left:5px solid #5EBB46; border-radius:10px; padding:18px;\"\u003e\n      \u003csummary style=\"cursor:pointer; color:#1A202C; font-weight:700; font-size:16px; line-height:1.4;\"\u003eWhat makes a 12V 300Ah lithium battery different from a standard deep-cycle battery?\u003c\/summary\u003e\n      \u003cp style=\"margin:14px 0 0 0; color:#2D3748;\"\u003eThis battery stores 3,840Wh (nominal; plan on about 3,072Wh) and is rated for 6,000+ cycles at 0.2C and 80% depth of discharge, to 80% of initial capacity at 25°C. It also handles engine cranking (1,000A for up to 5 seconds) and weighs 81 lb, against 130–160 lb for a lead-acid 8D.\u003c\/p\u003e\n    \u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #E2E8F0; border-left:5px solid #ED1B4A; border-radius:10px; padding:18px;\"\u003e\n      \u003csummary style=\"cursor:pointer; color:#1A202C; font-weight:700; font-size:16px; line-height:1.4;\"\u003eWhat applications are best for a 12V 300Ah lithium battery?\u003c\/summary\u003e\n      \u003cp style=\"margin:14px 0 0 0; color:#2D3748;\"\u003eThis dual-purpose battery is built for marine engine starting plus deep-cycle house power: electronics, sonar, pumps, refrigeration and lighting on dual-purpose boats, RV, van and overland 12V systems, 3,000W-class inverter systems within 300A, solar, off-grid, cabin and backup power, and 24V to 48V banks. At 500W it runs about 6.1 hours, and at 1,000W about 3.1 hours. Its large energy capacity supports extended runtimes for appliances, electronics, and essential equipment. The battery’s lightweight LiFePO4 design, long cycle life, and reliable performance make it a practical choice for demanding energy needs.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003c\/div\u003e\n  \u003c\/section\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\": \"Can I really use a 12V 300Ah lithium battery for both engine starting and deep-cycle use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The Epoch 12V 300Ah Group 8D LiFePO4 battery is designed for both engine starting and deep-cycle power applications. It delivers up to 1,000A of peak discharge for 5 seconds and 800A for 10 seconds, providing the power needed to start compatible marine engines. Epoch specifically notes compatibility with Mercury 250 hp motors when the electrical system is properly matched. In addition to starting power, the battery provides 300Ah of capacity for electronics, trolling motors, lighting, and other onboard equipment. Always verify compatibility with your engine and charging system before installation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need separate starting and house batteries with a 12V 300Ah lithium battery?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"In many compatible marine systems, no. A 12V 300Ah dual-purpose lithium battery combines engine-starting power and deep-cycle energy storage in a single unit. It can power fish finders, bilge pumps, lighting, marine audio, refrigeration, and other 12V accessories while still providing the cranking power needed to start compatible marine engines. Always verify compatibility with your electrical system before installation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this fit in my current Group 8D marine battery tray?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, this battery is designed around a Group 8D marine battery footprint. Epoch lists the dimensions as 19.70 in L × 10.5 in W × 9.75 in H (500 × 267 × 248 mm), and it must be mounted upright. If you currently run a Group 8D lead-acid or AGM battery, this lithium upgrade is intended to fit the same class of tray, but you should still verify tray dimensions, hold-downs, lid clearance, terminal access, and cable reach before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How much weight will I save on my boat?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Epoch 12V 300Ah Group 8D lithium battery weighs 81 lbs. Many traditional Group 8D lead-acid or AGM batteries weigh roughly 130 to 160 lbs, so it is about 49 to 79 lbs lighter. Less stern weight can help improve boat balance, hole shot, draft, and fuel efficiency depending on the vessel.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I wire these batteries together for even more power?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Epoch lists this Pro Series model as supporting up to 16 batteries in parallel for expanded 12V capacity and up to 4 batteries in series for 24V, 36V, or 48V systems. With batteries in series, up to 4 strings may be paralleled (4S4P maximum: 51.2V, 1,200Ah, 61.44kWh). Use matched batteries of the same model, age, capacity, and state of charge, check that their voltages are within 0.5V before connecting, and follow Epoch’s series\/parallel, communication, fusing, and charger guidance.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this battery safe to mount in a wet boat bilge?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. Its IP67 enclosure is dust-tight and protected against temporary immersion to 1 m for 30 minutes, but the manual says not to install it where standing water can collect around the case or terminals, such as a bilge, and not to submerge or pressure-wash it. Mount it upright in a clean, dry, ventilated compartment, secured with its bracket, with a DC-rated main fuse close to the positive terminal.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is there a way to see how much battery life I have left while on the water?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Bluetooth monitoring is built in, so you can use the free Epoch Pro app on an iOS or Android device to view battery information such as state of charge, voltage, current, temperature, and battery status. The Pro Series also supports over-the-air firmware updates through the app.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does this battery work with Victron systems?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Through the Pro Series communications box. The battery has CAN Link in and Link out ports for networking a bank; for Victron systems or NMEA 2000 networks, Epoch offers the Pro Series communications box. Contact Epoch for configuration support.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does it have cold-weather charging support?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. It has internal heating. When a charger is connected in cold weather, the heater warms the battery to 10°C (50°F) and then switches to charging, so it charges down to -20°C (-4°F); leave the charger connected and allow up to 60 minutes. It discharges down to -20°C (-4°F).\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What charger should I use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Use a lithium-compatible charger, inverter charger, converter, solar charge controller, or DC-to-DC charger programmed for LiFePO4 batteries. The Epoch 12V 50A Lithium Battery Charger is compatible. Epoch’s recommended settings are 14.2V bulk\/absorption (14.2V–14.6V range), 13.8V float (13.4V–13.8V range; float off is preferred where the charger allows), equalization disabled, temperature compensation disabled, and up to 150A charge current (300A maximum from all sources combined). 15.4V is a listed maximum, not a charger target. For alternator charging, use a DC-to-DC charger or lithium-ready regulation where the engine maker allows it.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What makes a 12V 300Ah lithium battery different from a standard deep-cycle battery?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This battery stores 3,840Wh (nominal; plan on about 3,072Wh) and is rated for 6,000+ cycles at 0.2C and 80% depth of discharge, to 80% of initial capacity at 25°C. It also handles engine cranking (1,000A for up to 5 seconds) and weighs 81 lb, against 130–160 lb for a lead-acid 8D.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What applications are best for a 12V 300Ah lithium battery?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This dual-purpose battery is built for marine engine starting plus deep-cycle house power: electronics, sonar, pumps, refrigeration and lighting on dual-purpose boats, RV, van and overland 12V systems, 3,000W-class inverter systems within 300A, solar, off-grid, cabin and backup power, and 24V to 48V banks. At 500W it runs about 6.1 hours, and at 1,000W about 3.1 hours. Its large energy capacity supports extended runtimes for appliances, electronics, and essential equipment. The battery’s lightweight LiFePO4 design, long cycle life, and reliable performance make it a practical choice for demanding energy needs.\"\n      }\n    }\n  ]\n}\n  \u003c\/script\u003e\n\n\u003c\/div\u003e\n","brand":"Epoch Batteries","offers":[{"title":"Default Title","offer_id":67677982326996,"sku":"DP12300H","price":1599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/0102\/2932\/files\/epoch_battery_dp1300h_professional_reflection.png?v=1791620273","url":"https:\/\/lfpexperts.com\/products\/12v-300ah-cranking-deep-cycle-lithium-battery-dual-purpose-pro-series","provider":"LFP Experts","version":"1.0","type":"link"}