{"product_id":"the-frost-line-lifepo4-battery","title":"The Frost Line | 12V LiFePO4 Battery with Low-Temperature BMS (100Ah-300Ah)","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003e\u003cstrong\u003eSome batteries surrender to winter. This one was built for it.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAsk any motorhome owner where batteries go to die and they will point north. Cold is the silent killer of lead-acid banks - capacity evaporates, charge acceptance collapses, and plates sulfate in the dark months. The Frost Line answers with a low-temperature Battery Management System that protects the pack through the conditions other chemistries fear, wrapped in an IP67-rated ABS case that shrugs off dust, splash, and the inside of a wet campervan garage. Beneath that shell sit prismatic LiFePO4 cells rated for 4500+ cycles - a decade of daily duty at 100% depth of discharge.\u003c\/p\u003e\n\u003cp\u003eThe numbers tell the real story. One-third the weight of lead-acid, twice the usable capacity from the same rated amp-hours, and a self-discharge rate below 3% per month, so the battery you park in October is still charged in April. The BMS is not a passive observer: it balances cells continuously, cuts the circuit on over-current, over-voltage, or short circuit in real time, and keeps charging disciplined at 14.4V. Four units stack into a 4S4P bank delivering 51.2V at 400Ah - 20.48kWh of stored energy for a serious off-grid home.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThis is not a battery. It is your power bank that refuses to acknowledge the season.\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✦ Low-temperature BMS protection - engineered for cold-weather storage and camping\u003c\/li\u003e\n\u003cli style=\"padding: 6px 0;\"\u003e✦ 4500+ charge cycles with 100% depth of discharge (vs 40-50% for lead-acid)\u003c\/li\u003e\n\u003cli style=\"padding: 6px 0;\"\u003e✦ Only one-third the weight of an equivalent lead-acid battery\u003c\/li\u003e\n\u003cli style=\"padding: 6px 0;\"\u003e✦ IP67-rated ABS case: dust-tight and protected against immersion\u003c\/li\u003e\n\u003cli style=\"padding: 6px 0;\"\u003e✦ Continuous cell balancing, over-voltage, under-voltage, short-circuit and temperature protection\u003c\/li\u003e\n\u003cli style=\"padding: 6px 0;\"\u003e✦ Expandable up to 4S4P - 51.2V 400Ah for a full 20.48kWh bank\u003c\/li\u003e\n\u003cli style=\"padding: 6px 0;\"\u003e✦ Self-discharge under 3% per month - park it, forget it, come back to a charged pack\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;\"\u003eModels:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e12V 100Ah \/ 12V 200Ah \/ 12V 300Ah\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 Energy:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e1280Wh \/ 2560Wh \/ 3840Wh\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;\"\u003e4500+ cycles @ 100% DoD\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;\"\u003e332x172x220mm (100Ah) \/ 550x230x220mm (200Ah \u0026amp; 300Ah)\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;\"\u003eInternal Resistance:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e≤50mΩ \/ ≤40mΩ \/ ≤30mΩ\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;\"\u003eStandard Charge Current:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e20A \/ 40A \/ 60A\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;\"\u003eMaximum Charge Current:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e100A \/ 200A \/ 200A\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;\"\u003eMaximum Discharge Current:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e120A \/ 200A \/ 235A\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;\"\u003eCharging Voltage:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e14.4V ±0.2V\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;\"\u003eOvercurrent Protection:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e130A \/ 210A \/ 250A\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;\"\u003eCase:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003eABS, IP67 rated\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;\"\u003eSelf-Discharge:\u003c\/strong\u003e\u003cspan style=\"color: #555;\"\u003e\u0026lt;3% per month\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 Frost Line was designed for the travellers and the self-sufficient - motorhomes and campervans that winter in the mountains, solar sheds in northern climates, caravan off-grid systems, sailboats in cold harbors, and home backup rooms that need a bank that simply starts. Because the BMS manages low-temperature charging safely, this is one of the few drop-in LiFePO4 upgrades you can make with confidence in a cold climate. And when your system grows, the modular bank grows with you: four packs in 4S4P deliver a full 51.2V 400Ah 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: What makes this battery different in cold weather?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe low-temperature BMS actively manages charging in cold conditions, protecting the cells from the damage that destroys unprotected LiFePO4 packs. It is one of the few 12V drop-in batteries designed with winter in mind.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does 100% depth of discharge help me?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA lead-acid battery only lets you safely use 40-50% of its rated capacity. LiFePO4 allows full discharge, so a 100Ah Frost Line delivers roughly double the usable energy of a 100Ah lead-acid battery of the same size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I connect multiple units?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes - up to 4 in series or 4 in parallel. A 4S4P configuration delivers 51.2V at 400Ah, a complete 20.48kWh storage system. Ensure all batteries are fully charged and voltage-balanced before wiring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How long will it last?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRated for 4500+ charge cycles at 100% DoD. In daily cycling that is roughly 10 years of service - several times the lifespan of a lead-acid bank, with no maintenance, no acid, and no venting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is it really lighter than lead-acid?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes - LiFePO4 packs weigh about one-third of an equivalent lead-acid battery, which simplifies installation in RVs, boats, and mobile applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the self-discharge rate?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUnder 3% per month, so a battery stored in autumn will hold its charge through the winter and be ready to work in spring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it come with a charger?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSelected models ship with a compatible charger included - check the model name, as units marked 'with charger' include one. For the others, use a LiFePO4-specific charger at 14.4V.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use it in a marine application?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes - the IP67-rated case resists moisture and splash, and the BMS tolerates the vibration and temperature swings of onboard use. Torque the terminals properly and protect them in saltwater environments.\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\/A7c5f4927817f432ba9cc0c58f0403aa5I.webp?v=1786919248\" alt=\"Foursun 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\/Af28a4045fe4b47fd818773846f43296cG.webp?v=1786919248\" alt=\"Foursun 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\/Accdb0cb2518b4950b0eff21da84d1eabm.webp?v=1786919248\" alt=\"Foursun 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\/A0044e8c6c0b84a2ca0ef048cd6ebe2e2E.webp?v=1786919248\" alt=\"Foursun 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\/Af32e2333c46648f6ab1855ac0c788786R.webp?v=1786919248\" alt=\"Foursun 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\/Add2a357cea5c43618bc26328a16a1695f.webp?v=1786919248\" alt=\"Foursun 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\/A25de2d94ab55418e91282b96c8efe555o.webp?v=1786919248\" alt=\"Foursun 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\/A2bd1d257244242f0aff928baad8cf08au.webp?v=1786919248\" alt=\"Foursun 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\/Adc971383fd7b4c21bcaa426995f47226a.webp?v=1786919248\" alt=\"Foursun 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\/Af60ffb12d1f1470db2c361b5e3dab949u.webp?v=1786919248\" alt=\"Foursun 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\/A06105a41d1ce48759977cfa9d79955c8g.webp?v=1786919248\" alt=\"Foursun LiFePO4 Battery\" style=\"max-width: 100%; margin: 10px 0; border-radius: 6px;\" loading=\"lazy\"\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"The Frost Line | 12V LiFePO4 Battery with Low-Temperature BMS (100Ah-300Ah)\",\n  \"image\": [\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/A7c5f4927817f432ba9cc0c58f0403aa5I.webp?v=1786919248\"],\n  \"description\": \"12V LiFePO4 battery with low-temperature BMS, 100Ah-300Ah, 4500+ cycles, IP67 case.\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Foursun\"},\n  \"offers\": {\"@type\": \"Offer\", \"url\": \"https:\/\/eastsupplier.com\/products\/the-frost-line-lifepo4-battery\", \"priceCurrency\": \"USD\", \"price\": \"459.19\", \"availability\": \"https:\/\/schema.org\/InStock\", \"itemCondition\": \"https:\/\/schema.org\/NewCondition\"},\n  \"aggregateRating\": {\"@type\": \"AggregateRating\", \"ratingValue\": \"4.8\", \"reviewCount\": \"4\"}\n}\n\u003c\/script\u003e","brand":"EastSupplier Platform","offers":[{"title":"12V100Ah \/ Poland","offer_id":51210730471647,"sku":"1005011611206998-12V100Ah-Poland","price":459.19,"currency_code":"USD","in_stock":true},{"title":"12V 200Ah without charger \/ Poland","offer_id":51210730569951,"sku":"1005011611206998-12V 200Ah without charger-Poland","price":879.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/A3734afdf87d94d62a741685844e69bd7T.webp?v=1786919248","url":"https:\/\/eastsupplier.com\/de-kr\/products\/the-frost-line-lifepo4-battery","provider":"EastSupplier Platform","version":"1.0","type":"link"}