{"product_id":"epoch-12v-172ah-dual-purpose-lifepo4-battery-group-31-cranking-deep-cycle","title":"Epoch 12V 172Ah Dual Purpose LiFePO4 Battery | Group 31 | Cranking \u0026 Deep Cycle","description":"\u003cdiv style=\"font-size: 18px; font-family: inherit; line-height: 1.7; color: #1a1a1a;\"\u003e\n\u003cp style=\"font-size: 18px; margin-bottom: 20px;\"\u003eThe Epoch 12V 172Ah is a 12V 172Ah LiFePO4 lithium iron phosphate battery built for marine use. It combines engine-cranking capability with deep-cycle house power in a single Group 31 battery eliminating the need for separate starting and house batteries on your boat.\u003c\/p\u003e\n\u003cp style=\"font-size: 18px; margin-bottom: 20px;\"\u003eWith a 1,000A peak discharge for 5 seconds, this battery delivers reliable cranking power for outboard motors up to 250hp, while the 200A continuous discharge rating handles fish finders, chartplotters, VHF radios, live wells, bilge pumps, and other onboard electronics throughout the day.\u003c\/p\u003e\n\u003cp style=\"font-size: 18px; margin-bottom: 20px;\"\u003eThe IP65-rated enclosure provides full protection against water jets and dust built to handle the spray, splash, and humidity of a marine environment. Built-in Bluetooth lets you monitor state of charge, voltage, current, and cell health directly from your phone using the Epoch iOS and Android app, without needing an external battery monitor.\u003c\/p\u003e\n\u003cp style=\"font-size: 18px; margin-bottom: 20px;\"\u003eAt 40 lbs, the Epoch 12V 172Ah weighs significantly less than a comparable Group 31 AGM battery (typically 55–75 lbs), reducing hull weight and improving fuel efficiency and handling. The LiFePO4 chemistry delivers 4,000+ charge cycles at 80% depth of discharge significantly longer service life than lead-acid or AGM alternatives.\u003c\/p\u003e\n\u003cp style=\"font-size: 18px; margin-bottom: 20px;\"\u003eThe internal Battery Management System (BMS) provides automatic protection against overcharge, over-discharge, short circuit, overcurrent, and high\/low temperature disconnects. No maintenance is required.\u003c\/p\u003e\n\u003cp style=\"font-size: 18px; margin-bottom: 20px;\"\u003eAs a dual purpose battery, the Epoch 12V 172Ah is commonly used in marine applications to start outboard motors up to 250hp and power onboard electronics from a single battery. The deep cycle capability also makes it suitable for RV house banks where it can start a generator and sustain house loads, as well as off-grid and backup power systems that require both reliable starting power and sustained energy storage.\u003c\/p\u003e\n\u003cp style=\"font-size: 18px; margin-bottom: 0;\"\u003eBacked by an 11-year manufacturer warranty. Register within 90 days of purchase for full coverage. For full details read Warranty Tab\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Tab 2: Features --\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cdiv style=\"font-size: 18px; font-family: inherit; line-height: 1.8; color: #1a1a1a;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 18px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 14px 10px; width: 30px; vertical-align: top; font-weight: 600;\"\u003e✓\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top;\"\u003e\n\u003cstrong\u003eDual Purpose Cranking and Deep Cycle\u003c\/strong\u003e\u003cbr\u003eStarts outboard motors up to 250hp and powers house loads from the same battery. Replaces separate starting and house batteries.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0; background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top; font-weight: 600;\"\u003e✓\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top;\"\u003e\n\u003cstrong\u003e1,000A Peak Cranking Capability (5 seconds)\u003c\/strong\u003e\u003cbr\u003eDelivers 1,000 CCA-equivalent cranking power for reliable cold-start performance on gasoline outboard engines up to 250hp.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top; font-weight: 600;\"\u003e✓\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top;\"\u003e\n\u003cstrong\u003e200A Continuous Discharge\u003c\/strong\u003e\u003cbr\u003eSustains high-draw loads including trolling motors, inverters, live wells, and multiple electronics simultaneously.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0; background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top; font-weight: 600;\"\u003e✓\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top;\"\u003e\n\u003cstrong\u003eIP65 Waterproof and Dustproof\u003c\/strong\u003e\u003cbr\u003eRated IP65 fully protected against water jets from any direction. Built for exposed marine environments, bilge installations, and saltwater spray.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top; font-weight: 600;\"\u003e✓\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top;\"\u003e\n\u003cstrong\u003eBuilt-in Bluetooth Monitoring\u003c\/strong\u003e\u003cbr\u003eMonitor state of charge, voltage, current, cell voltages, and temperature in real time from your phone. Compatible with iOS and Android via the Epoch app.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0; background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top; font-weight: 600;\"\u003e✓\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top;\"\u003e\n\u003cstrong\u003eLiFePO4 Chemistry 4,000+ Cycle Life\u003c\/strong\u003e\u003cbr\u003eLithium iron phosphate cells rated for 4,000+ cycles at 80% depth of discharge. Stable chemistry with no thermal runaway risk.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top; font-weight: 600;\"\u003e✓\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top;\"\u003e\n\u003cstrong\u003e40 lbs Lightweight vs AGM\u003c\/strong\u003e\u003cbr\u003eWeighs significantly less than a comparable Group 31 AGM battery (typically 55–75 lbs vs 40 lbs), reducing hull weight and improving vessel performance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0; background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top; font-weight: 600;\"\u003e✓\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top;\"\u003e\n\u003cstrong\u003eSmart BMS Automatic Protection\u003c\/strong\u003e\u003cbr\u003eInternal Battery Management System protects against overcharge, over-discharge, overcurrent, short circuit, and high\/low temperature disconnects automatically.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top; font-weight: 600;\"\u003e✓\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top;\"\u003e\n\u003cstrong\u003eLow-Temperature Charge Protection\u003c\/strong\u003e\u003cbr\u003eBMS automatically prevents charging below 0°C (32°F) to protect cells. Safe to discharge down to -20°C (-4°F).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0; background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top; font-weight: 600;\"\u003e✓\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top;\"\u003e\n\u003cstrong\u003eUp to 4 Batteries in Parallel\u003c\/strong\u003e\u003cbr\u003eExpand capacity up to 688Ah \/ 8.8kWh by connecting up to 4 units in parallel with plug-and-play compatibility.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top; font-weight: 600;\"\u003e✓\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top;\"\u003e\n\u003cstrong\u003eGroup 31 Form Factor Drop-In Replacement\u003c\/strong\u003e\u003cbr\u003eFits standard Group 31 battery trays on most offshore and inshore fishing boats, center consoles, and bay boats.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0; background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top; font-weight: 600;\"\u003e✓\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top;\"\u003e\n\u003cstrong\u003eMaintenance-Free\u003c\/strong\u003e\u003cbr\u003eNo water checks, no equalization charges, no terminal cleaning. Install and use.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top; font-weight: 600;\"\u003e✓\u003c\/td\u003e\n\u003ctd style=\"padding: 14px 10px; vertical-align: top;\"\u003e\n\u003cstrong\u003e11-Year Manufacturer Warranty\u003c\/strong\u003e\u003cbr\u003eBacked by Epoch Batteries' 11-year limited warranty. Full replacement coverage for the first 36 months. Register within 90 days of purchase.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Tab 3: Tech Specs --\u003e\n\u003ch3\u003eTech Specs\u003c\/h3\u003e\n\u003cdiv style=\"font-size: 18px; font-family: inherit; line-height: 1.7; color: #1a1a1a;\"\u003e\n\u003cp style=\"font-size: 16px; font-weight: 600; margin-bottom: 8px; margin-top: 0;\"\u003eELECTRICAL SPECIFICATIONS\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 18px; margin-bottom: 28px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; width: 50%; border-bottom: 1px solid #ddd;\"\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e12.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e172Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eEnergy Stored\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e2.20 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eCell Configuration\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e4S1P Prismatic LiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eMax Charge Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e15.0V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e10.0V – 14.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eParallel Connections\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eMax 4 in Parallel, Plug \u0026amp; Play\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eCycle Life\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e4,000+ cycles @ 80% DoD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eBluetooth\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eYes iOS and Android\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eSelf-Heating\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600;\"\u003eLow-Temperature Charge Protection\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px;\"\u003eYes (BMS automatic cutoff)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 16px; font-weight: 600; margin-bottom: 8px;\"\u003eDISCHARGE SPECIFICATIONS\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 18px; margin-bottom: 28px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; width: 50%; border-bottom: 1px solid #ddd;\"\u003eMax Continuous Discharge\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003ePeak Discharge (5 seconds)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e1,000A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600;\"\u003eDischarge Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px;\"\u003e-20°C to 60°C (-4°F to 140°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 16px; font-weight: 600; margin-bottom: 8px;\"\u003eCHARGE SPECIFICATIONS\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 18px; margin-bottom: 28px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; width: 50%; border-bottom: 1px solid #ddd;\"\u003eMax Continuous Charge Current\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eBulk \/ Absorption Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e14.2V – 14.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eAbsorption End Condition\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eStop when current ≤ C\/20 or 15 min max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eFloat Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e13.4V – 13.8V (disabled preferred)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eRe-Bulk Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e13.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eEqualization\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e14.4V \/ Disabled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eTemperature Compensation\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e0mV\/°C Disabled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eRecommended Charge Rate\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e50% of bank capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eBMS High Voltage Cutoff\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e14.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600;\"\u003eCharge Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px;\"\u003e0°C to 55°C (32°F to 131°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 16px; font-weight: 600; margin-bottom: 8px;\"\u003eTEMPERATURE SPECIFICATIONS\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 18px; margin-bottom: 28px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; width: 50%; border-bottom: 1px solid #ddd;\"\u003eDischarge Temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e-20°C to 60°C (-4°F to 140°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eCharge Temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e-5°C to 55°C (23°F to 131°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600;\"\u003eRecommended Storage Temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px;\"\u003e0°C to 35°C (32°F to 95°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 16px; font-weight: 600; margin-bottom: 8px;\"\u003eMECHANICAL SPECIFICATIONS\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 18px; margin-bottom: 28px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; width: 50%; border-bottom: 1px solid #ddd;\"\u003eGroup Size\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eGroup 31\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eDimensions (L x W x H)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e12.91\" x 6.22\" x 8.46\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e40 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eCase Material\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eABS \u0026amp; PC Blend UL94-V0 Flame Rated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eEnclosure Protection\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eIP65 Dust and Waterproof\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eCell Type\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003ePrismatic LiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600;\"\u003eTerminal Type\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px;\"\u003eM8 Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 16px; font-weight: 600; margin-bottom: 8px;\"\u003eCOMPLIANCE \u0026amp; CERTIFICATIONS\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 18px; margin-bottom: 0;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; width: 50%; border-bottom: 1px solid #ddd;\"\u003eCertifications\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eUL 1642, UL 9540A, IEC 62619:2022, CE, RoHS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eShipping Classification\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eUN 38.3, Class 9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px;\"\u003e11-Year Limited Manufacturer Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Tab 4: Compatibility --\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cdiv style=\"font-size: 18px; font-family: inherit; line-height: 1.7; color: #1a1a1a;\"\u003e\n\u003cp style=\"font-size: 18px; margin-bottom: 20px;\"\u003eThe Epoch 12V 172Ah is designed primarily for marine applications. Below is a guide to confirmed compatible uses and important limitations to be aware of before purchasing.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; font-weight: 600; margin-bottom: 8px; margin-top: 24px;\"\u003eOUTBOARD ENGINE COMPATIBILITY\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 18px; margin-bottom: 28px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; width: 50%; border-bottom: 1px solid #ddd;\"\u003eConfirmed Compatible\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eAll outboard motors up to 250hp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eEngine Brands\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eMercury, Yamaha, Suzuki, Honda, Evinrude, Tohatsu\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600;\"\u003eCharging from Outboard Alternator\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px;\"\u003eCompatible. Use a DC-to-DC charger between the outboard and battery for regulated charging and alternator protection on stator-based charging systems.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 16px; font-weight: 600; margin-bottom: 8px;\"\u003eVESSEL TYPE\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 18px; margin-bottom: 28px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; width: 50%; border-bottom: 1px solid #ddd;\"\u003eCenter Console Boats\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eFits standard Group 31 battery boxes and trays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eBay Boats\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eOffshore Fishing Boats\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003ePontoon Boats\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eCompatible where Group 31 tray is available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600;\"\u003eInboard \/ Sterndrive Boats\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px;\"\u003eCompatible for starting and house use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 16px; font-weight: 600; margin-bottom: 8px;\"\u003eCHARGING SYSTEM COMPATIBILITY\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 18px; margin-bottom: 28px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; width: 50%; border-bottom: 1px solid #ddd;\"\u003eShore Power Chargers\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eCompatible use a LiFePO4-compatible charger set to 14.2V–14.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eSolar Charge Controllers\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eCompatible set to LiFePO4 profile, 14.2V–14.6V absorption\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eDC-to-DC Chargers\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eCompatible recommended for alternator charging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eVictron Energy Equipment\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eCompatible with Victron chargers, MPPT controllers, and Cerbo GX via Bluetooth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600;\"\u003eStandard AGM Chargers\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eNot recommended use only chargers with a LiFePO4 or programmable profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 16px; font-weight: 600; margin-bottom: 8px;\"\u003eIMPORTANT LIMITATIONS\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 18px; margin-bottom: 0;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; width: 50%; border-bottom: 1px solid #ddd;\"\u003eSeries Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eNot supported this battery operates at 12V only and cannot be connected in series for 24V or 48V systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eSelf-Heating\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eNot included. Charging is not possible below 0°C (32°F). The BMS will automatically prevent charging in cold conditions. Suitable for warm-climate use year-round.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600;\"\u003eVoltage Compatibility\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px;\"\u003e12V systems only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Tab 5: Charging Guide --\u003e\n\u003ch3\u003eCharging Guide\u003c\/h3\u003e\n\u003cdiv style=\"font-size: 18px; font-family: inherit; line-height: 1.7; color: #1a1a1a;\"\u003e\n\u003cp style=\"font-size: 18px; margin-bottom: 20px;\"\u003eTo get the longest service life from your Epoch 12V 172Ah, program your charging components to the following settings. Charging components include shore power chargers, solar charge controllers, DC-to-DC chargers, and inverter\/chargers.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 18px; margin-bottom: 28px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; width: 50%; border-bottom: 1px solid #ddd;\"\u003eBulk \/ Absorption Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e14.2V – 14.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eAbsorption End Condition\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eStop when charge current drops to C\/20 or after 15 minutes maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eFloat Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e13.4V – 13.8V (disabled preferred for longest cell life)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eRe-Bulk Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e13.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eEqualization\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eDisabled (do not equalize LiFePO4 batteries)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eTemperature Compensation\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003eDisabled 0mV\/°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eRecommended Charge Rate\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e50% of bank capacity (86A for a single battery)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600; border-bottom: 1px solid #ddd;\"\u003eAbsorption Time (2 batteries in parallel)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #ddd;\"\u003e30 minutes minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 12px 14px; font-weight: 600;\"\u003eCharge Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 14px;\"\u003e0°C to 55°C (32°F to 131°F)  BMS will prevent charging outside this range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 18px; margin-bottom: 12px;\"\u003e\u003cstrong\u003eNote on charger selection:\u003c\/strong\u003e Not all marine chargers support multistage LiFePO4 charging. If your charger does not have a LiFePO4 profile, verify that it can at minimum be programmed to the bulk\/absorption voltage of 14.2V–14.6V and that equalization and temperature compensation can be disabled. Consult your charger manufacturer if unsure.\u003c\/p\u003e\n\u003cp style=\"font-size: 18px; margin-bottom: 0;\"\u003e\u003cstrong\u003eNote on alternator charging:\u003c\/strong\u003e When charging from an outboard alternator, a DC-to-DC charger between the engine and battery is recommended. LiFePO4 batteries accept charge at near-full alternator output until full, which can stress small outboard charging systems. A DC-to-DC charger regulates this current and protects both the battery and the alternator.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Tab 6: FAQs --\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cdiv style=\"font-size: 18px; font-family: inherit; line-height: 1.7; color: #1a1a1a;\"\u003e\n\u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 16px 0; margin-bottom: 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eCan this battery start my outboard motor? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eYes. The Epoch 12V 172Ah is rated for all outboard motors up to 250hp. It delivers 1,000A for 5 seconds sufficient cranking power for reliable cold starts on gasoline outboard engines including Mercury, Yamaha, Suzuki, Honda, and others. It replaces both your starting battery and house battery in a single unit.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 16px 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eCan I charge this battery directly from my outboard alternator? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eYou can charge from an outboard alternator, but using a DC-to-DC charger between the engine and battery is recommended. LiFePO4 batteries accept charge at near-maximum alternator output until full. On smaller stator-based outboard charging systems, this can stress the alternator similar to switching off the battery while the engine is running. A DC-to-DC charger (such as the Victron Orion series) regulates the current and protects both the alternator and the battery. On inboard engines with regulated alternators, this is less of a concern.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 16px 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eDoes this battery have a self-heating function for cold weather charging? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eNo. The Epoch 12V 172Ah does not include an internal self-heating element. The BMS will automatically prevent charging if the battery temperature drops below 0°C (32°F) to protect the cells. The battery can discharge down to -20°C (-4°F) without issue only charging in freezing temperatures is restricted. This battery is designed for use in warm and temperate marine climates where below-freezing charging is not a regular requirement.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 16px 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eWhat charger settings should I use? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eProgram your charger to the following settings: Bulk\/Absorption 14.2V–14.6V, Float 13.4V–13.8V (or disabled), Equalization disabled, Temperature Compensation disabled (0mV\/°C), Charge rate 50% of bank capacity. If your charger only allows a single voltage setting, set it to 14.4V and disable all other stages. See the Charging Guide tab for full details.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 16px 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eCan I use my existing AGM battery charger? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eNot recommended. AGM chargers typically use charge profiles that include equalization cycles and temperature compensation that are not appropriate for LiFePO4 chemistry. Use a charger with a dedicated LiFePO4 profile, or a programmable charger that allows you to set the absorption voltage to 14.2V–14.6V and disable equalization and temperature compensation.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 16px 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eHow does this battery compare to a Group 31 AGM in weight? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eThe Epoch 12V 172Ah weighs 40 lbs. A comparable Group 31 AGM battery typically weighs between 55 and 75 lbs. The Epoch 12V 172Ah weighs 40 lbs significantly lighter than a lead-acid equivalent, which meaningfully reduces hull weight, improves fuel efficiency, and makes installation easier.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 16px 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eWhat is the actual usable capacity compared to a 172Ah AGM? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eA LiFePO4 battery can be safely discharged to 80% depth of discharge without damage, giving approximately 137Ah of usable capacity from this 172Ah unit. A 172Ah AGM is typically limited to 50% depth of discharge before capacity and lifespan degrade significantly, giving approximately 86Ah of usable capacity. This battery provides roughly 60% more usable energy than a same-rated AGM.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 16px 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eHow do I monitor the battery on my boat? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eThe Epoch 12V 172Ah includes built-in Bluetooth. Download the Epoch Batteries app on iOS or Android and connect directly to the battery to monitor state of charge, voltage, current draw, cell voltages, and temperature in real time from your phone. No external battery monitor or shunt is required for basic monitoring, though a dedicated shunt monitor can be added for more precise tracking in multi-battery systems.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 16px 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eCan I connect multiple batteries together? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eYes, up to 4 batteries can be connected in parallel for a combined capacity of 688Ah \/ 8.8kWh at 12V. Parallel connection is plug-and-play. Series connection is not supported this battery is designed for 12V systems only and cannot be wired for 24V or 48V configurations.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 16px 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eHow should I store the battery between fishing seasons? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eStore the battery fully charged in a dry location between 0°C and 35°C (32°F to 95°F). Do not store it in a fully discharged state  leaving a fully depleted LiFePO4 battery in storage for an extended period can permanently damage the cells and voids the warranty. If storing on the boat over winter, disconnect the battery and check charge level periodically.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 16px 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eWhat does the 11-year warranty cover? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eThe 11-year limited warranty covers defects in materials and workmanship. Full replacement coverage applies for the first 36 months from the date of purchase. From months 37 through 132, warranty coverage is prorated. The warranty is non-transferable and applies only to the original purchaser. Battery must be registered on the Epoch Batteries website within 90 days of purchase for the warranty period to begin from the purchase date rather than the manufacturing date. Read warranty Tab\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 16px 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eIs this battery safe for saltwater marine environments? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eYes. The IP65 enclosure rating means the battery is fully protected against water jets from any direction and against dust ingress. The ABS and PC blend case with UL94-V0 flame rating is appropriate for marine environments. Standard marine installation practices apply avoid submerging the battery and ensure terminals are protected from prolonged direct exposure to saltwater.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #ddd; padding: 16px 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eWill it fit in my existing battery box or tray? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eThe Epoch 12V 172Ah (SKU: 12172A-DP) measures 12.91\" x 6.22\" x 8.46\" (L x W x H) and fits Group 31 battery trays. Verify your existing tray dimensions before purchasing. Note that while this battery replaces a Group 31 lead-acid or AGM physically, it weighs significantly less confirm your mounting hardware secures the battery firmly to prevent movement underway.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"padding: 16px 0;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;\"\u003eDoes it require any maintenance? \u003cspan style=\"font-size: 22px; font-weight: 400; margin-left: 12px;\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding-top: 12px; font-size: 18px; color: #333; line-height: 1.7;\"\u003eNo maintenance is required. LiFePO4 batteries do not require water checks, terminal cleaning, equalization charges, or periodic full discharge cycles. The internal BMS handles cell balancing automatically. Keep terminal connections clean and tight as standard practice.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Epoch Batteries","offers":[{"title":"Default Title","offer_id":47925718155522,"sku":"12172A-DP","price":799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0723\/3660\/5442\/files\/12172A-DP-1.png?v=1780344005","url":"https:\/\/www.lithiumbatterysupply.com\/products\/epoch-12v-172ah-dual-purpose-lifepo4-battery-group-31-cranking-deep-cycle","provider":"Lithium Battery Supply","version":"1.0","type":"link"}