{"product_id":"the-grid-sentinel-lifepo4-battery","title":"The Grid Sentinel | 12V-24V LiFePO4 Deep-Cycle Battery (100Ah-300Ah, Built-in BMS)","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003e\u003cstrong\u003ePower is not a commodity. It is a promise kept at three in the morning.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEvery off-grid system has a moment of truth: the night the grid drops, the morning the inverter wakes to an empty bank, the season the sun refuses to show up on schedule. That is where the Grid Sentinel earns its name. Built on prismatic lithium iron phosphate cells, it delivers 12V or 24V architecture in a single modular pack, storing between 1280Wh and 3840Wh of usable energy. This is not a battery you replace each season; it is infrastructure you install once and forget for the next decade.\u003c\/p\u003e\n\u003cp\u003eThe chemistry alone separates it from everything else on the shelf. LiFePO4 delivers more than 6000 charge cycles at 100% depth of discharge, a service life five times longer than lead-acid, at roughly one-third the weight. The built-in Battery Management System watches every cell continuously: balancing voltage, cutting the circuit on over-current or over-temperature, and keeping the pack alive through discharge temperatures down to -20°C. For an RV, a solar shed, a sailboat, or a backup room that must not fail, the math is simple. Lead-acid is a compromise. This is a decision.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThis is not a battery. It is a reserve of certainty that quietly waits for the moment you need it.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-features\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding: 0; margin: 0 0 10px 0; font-size: 15px; line-height: 1.7;\"\u003e\n\u003cli style=\"padding: 6px 0;\"\u003e✦ 6000+ charge cycles at 0.5C, 100% depth of discharge - a working life of 5 to 10 years\u003c\/li\u003e\n\u003cli style=\"padding: 6px 0;\"\u003e✦ Prismatic LiFePO4 cells - thermally stable, non-combustible, no acid, no fumes\u003c\/li\u003e\n\u003cli style=\"padding: 6px 0;\"\u003e✦ Only 30% of the weight of an equivalent lead-acid bank\u003c\/li\u003e\n\u003cli style=\"padding: 6px 0;\"\u003e✦ Built-in BMS: cell balancing, over-voltage, under-voltage, over-current and temperature protection\u003c\/li\u003e\n\u003cli style=\"padding: 6px 0;\"\u003e✦ Modular expansion - up to 4 in series or 4 in parallel (4S4P) for 24V\/48V systems up to 20.48kWh\u003c\/li\u003e\n\u003cli style=\"padding: 6px 0;\"\u003e✦ Discharges down to -20°C - better low-temperature behavior than lead-acid\u003c\/li\u003e\n\u003cli style=\"padding: 6px 0;\"\u003e✦ 60-month warranty with ten years of replacement support on accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding: 0; margin: 0; font-size: 14px; line-height: 1.6;\"\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee; display: flex; justify-content: space-between;\"\u003e\n\u003cstrong style=\"min-width: 200px; color: #1a1d20;\"\u003eChemistry:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003eLithium Iron Phosphate (LiFePO4)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee; display: flex; justify-content: space-between;\"\u003e\n\u003cstrong style=\"min-width: 200px; color: #1a1d20;\"\u003eNominal Voltage:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e12.8V (12V models) \/ 25.6V (24V model)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee; display: flex; justify-content: space-between;\"\u003e\n\u003cstrong style=\"min-width: 200px; color: #1a1d20;\"\u003eCapacity:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e100Ah \/ 300Ah (12V) - 100Ah (24V)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee; display: flex; justify-content: space-between;\"\u003e\n\u003cstrong style=\"min-width: 200px; color: #1a1d20;\"\u003eStored Energy:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e1280Wh \/ 2560Wh \/ 3840Wh depending on model\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee; display: flex; justify-content: space-between;\"\u003e\n\u003cstrong style=\"min-width: 200px; color: #1a1d20;\"\u003eCycle Life:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e\u0026gt;6000 cycles @ 0.5C, 100% DoD, 25°C\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee; display: flex; justify-content: space-between;\"\u003e\n\u003cstrong style=\"min-width: 200px; color: #1a1d20;\"\u003eMax Discharge Current:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e100A \/ 200A (model dependent)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee; display: flex; justify-content: space-between;\"\u003e\n\u003cstrong style=\"min-width: 200px; color: #1a1d20;\"\u003eMax Charge Current:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e50A \/ 150A (model dependent)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee; display: flex; justify-content: space-between;\"\u003e\n\u003cstrong style=\"min-width: 200px; color: #1a1d20;\"\u003eOperating Temperature:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003eDischarge -20°C to +55°C; charge 0°C to +55°C\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee; display: flex; justify-content: space-between;\"\u003e\n\u003cstrong style=\"min-width: 200px; color: #1a1d20;\"\u003eDimensions:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e260x155x207mm (12V100Ah) \/ 522x268x222mm (12V300Ah) \/ 510x167x240mm (24V100Ah)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee; display: flex; justify-content: space-between;\"\u003e\n\u003cstrong style=\"min-width: 200px; color: #1a1d20;\"\u003eWeight:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e9.5kg \/ 19kg \/ 25.6kg (model dependent)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee; display: flex; justify-content: space-between;\"\u003e\n\u003cstrong style=\"min-width: 200px; color: #1a1d20;\"\u003eConnection:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003eMultiple units in series or parallel supported\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee; display: flex; justify-content: space-between;\"\u003e\n\u003cstrong style=\"min-width: 200px; color: #1a1d20;\"\u003eWarranty:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e60 months\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-applications\"\u003e\n\u003cp\u003e\u003cstrong\u003eWhere it lives:\u003c\/strong\u003e The Grid Sentinel is built for the places energy has to be trusted - motorhomes and campervans, solar cabin systems, marine electrical banks, caravan off-grid kits, and emergency backup rooms. Because the pack accepts parallel expansion, a single 100Ah core can grow into a full 400Ah bank as your system demands more; because it accepts series wiring, the same cells can step up to 24V or 48V architecture without changing chemistry. Four units in 4S4P configuration deliver 51.2V at 400Ah - a complete 20.48kWh home storage foundation.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-faq\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How long will this battery actually last?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRated for more than 6000 charge cycles at 0.5C and 100% depth of discharge. In daily-use solar or RV applications that translates to roughly 5-10 years of service - several times the lifespan of a lead-acid bank.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I replace my lead-acid battery with this?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The 12V models are direct drop-in replacements for 12V lead-acid batteries with the same nominal voltage range. You gain more usable capacity (100% DoD vs 40-50%), lose about 70% of the weight, and remove acid venting entirely.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I connect multiple batteries?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes - up to 4 in series or 4 in parallel. Before wiring, fully charge each unit separately, then connect in parallel for 1-2 hours to equalize voltage. Use adequately thick connecting wire for series configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it work in cold weather?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. Discharge is rated down to -20°C, which is better than most lead-acid chemistries. Charging is limited to 0°C and above, a standard safety measure for LiFePO4.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What charger should I use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse a LiFePO4-compatible charger: 14.4-14.6V at 20-50A for the 12V 100Ah model, 14.6V at 50-150A for the 300Ah model, and 29.2V at 20-50A for the 24V 100Ah model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is covered by the warranty?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe pack carries a 60-month warranty, with replacement support for accessories extending to ten years.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this battery safe to install indoors?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. LiFePO4 chemistry is inherently stable - no acid, no hydrogen off-gassing, and no thermal runaway risk under normal operation. It can be mounted in living areas, engine bays, and enclosed compartments where lead-acid is not permitted.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between the 12V and 24V models?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 12V models (100Ah\/300Ah) suit standard 12V RV, marine, and solar systems; the 24V 100Ah model matches 24V inverter and camper architectures. Choose by your system voltage - the chemistry and BMS protection are identical across the family.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-gallery\" style=\"margin-top: 30px; text-align: center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sbfbbbe6cdfc24db1a756626fc993f4baU.webp?v=1786919259\" alt=\"EASUN LiFePO4 Battery\" style=\"max-width: 100%; margin: 10px 0; border-radius: 6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S97e55d0ae8fb4ebcae78600325b778d99.webp?v=1786919259\" alt=\"EASUN LiFePO4 Battery\" style=\"max-width: 100%; margin: 10px 0; border-radius: 6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S8eef31f5ce734fce9c40db0c49c5bbb2j.webp?v=1786919259\" alt=\"EASUN LiFePO4 Battery\" style=\"max-width: 100%; margin: 10px 0; border-radius: 6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sebff0fe78d4842d2a28774a71878ba32n.webp?v=1786919258\" alt=\"EASUN LiFePO4 Battery\" style=\"max-width: 100%; margin: 10px 0; border-radius: 6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sd9c8092bcadc4fb7a20d0519d727eaadb.webp?v=1786919259\" alt=\"EASUN LiFePO4 Battery\" style=\"max-width: 100%; margin: 10px 0; border-radius: 6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Scdc92fbea4d8497b873a63456c71ab2e3.webp?v=1786919258\" alt=\"EASUN LiFePO4 Battery\" style=\"max-width: 100%; margin: 10px 0; border-radius: 6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S715b9c62d7b14fb9937ec4bf68eccaddC.webp?v=1786919259\" alt=\"EASUN LiFePO4 Battery\" style=\"max-width: 100%; margin: 10px 0; border-radius: 6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S2c4fdd79640847719fb501f5a21b5dd3r.webp?v=1786919259\" alt=\"EASUN LiFePO4 Battery\" style=\"max-width: 100%; margin: 10px 0; border-radius: 6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S30b8e97ccdd34025ac11244713022ebdg.webp?v=1786919259\" alt=\"EASUN LiFePO4 Battery\" style=\"max-width: 100%; margin: 10px 0; border-radius: 6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S5e2bd36a7fe642708c37a5abe5c1f58dQ.webp?v=1786919259\" alt=\"EASUN LiFePO4 Battery\" style=\"max-width: 100%; margin: 10px 0; border-radius: 6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S57d38793120c41d0ad53c946ec275165I.webp?v=1786919258\" alt=\"EASUN LiFePO4 Battery\" style=\"max-width: 100%; margin: 10px 0; border-radius: 6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Saa84e9fe66af4990b0472cd82e7c057ab.webp?v=1786919259\" alt=\"EASUN LiFePO4 Battery\" style=\"max-width: 100%; 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