{"product_id":"big-battery-48v-ethos-20-4kwh-4-module","title":"Big Battery 48V ETHOS 20.4KWH (4 Module) - K0951","description":"\u003ch2\u003eBig Battery 48V ETHOS 20.4KWH (4 Module) - K0951\u003c\/h2\u003e\n\u003cp\u003eREVOLUTIONIZING RESIDENTIAL ESS! BigBattery’s 48V ETHOS systems are here, and this 20kWh configuration is the ideal solution for off-grid power in your family homestead, cabin, or mansion, supported by comprehensive safety, reliability, and state-of-the-art features.\u003c\/p\u003e\n\u003cp\u003eThe ETHOS System was built to be a versatile on or off-grid power solution, with a stackable, modular design for easy expandability, and all hardware included to mount your ETHOS to your wall with an effortless installation. The ETHOS comes equipped with an IP65-rated casing, an advanced BMS with auto cell-balancing, as well as an internal fire suppression system to ensure long-lasting safety and reliability. Plus, its control box features an interDraft LED display, along with CANBus and RS485 communication protocols, so you can always monitor the status and performance of your power.\u003c\/p\u003e\n\u003cp\u003eWhether you’re looking to ensure emergency backup power is always available, or you’re looking to outfit your homestead with a powerful solar system, the ETHOS ensures reliable, efficient power delivery day in and day out. Take control of your home’s power and shop the 48V ETHOS today!\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eIncluded \u003c\/span\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e4 × 48V ETHOS 5.12kWh Stackable Battery Module\u003c\/li\u003e\n\u003cli\u003e1 × ETHOS Control Box\u003c\/li\u003e\n\u003cli\u003e1 × ETHOS RACK BASE\u003c\/li\u003e\n\u003cli\u003e1 × Ethos Parallel Comm Cable 4.9 ft (1500mm)\u003c\/li\u003e\n\u003cli\u003e2 × Ethos Parallel Power Cable 4.9 ft (1500mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-start=\"98\" data-end=\"298\"\u003e\n\u003cp data-start=\"100\" data-end=\"298\"\u003e\u003cstrong data-start=\"100\" data-end=\"133\"\u003eAll‑round off‑grid powerhouse\u003c\/strong\u003e — Combines a 12 kW inverter with a 20.4 kWh LiFePO₄ battery bank, giving enough capacity and output to run most household loads or a small off‑grid home reliably.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"299\" data-end=\"536\"\u003e\n\u003cp data-start=\"301\" data-end=\"536\"\u003e\u003cstrong data-start=\"301\" data-end=\"344\"\u003eLarge energy storage with strong output\u003c\/strong\u003e — 20.4 kWh capacity provides extended runtime, while the 12 kW inverter output handles heavy loads (appliances, tools, HVAC), making it versatile for homes, cabins, or remote installations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"537\" data-end=\"723\"\u003e\n\u003cp data-start=\"539\" data-end=\"723\"\u003e\u003cstrong data-start=\"539\" data-end=\"571\"\u003eReady for real-world demands\u003c\/strong\u003e — Solid battery chemistry and robust BMS ensure deep‑cycle durability and stable power delivery, even under demanding or fluctuating load conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"724\" data-end=\"928\"\u003e\n\u003cp data-start=\"726\" data-end=\"928\"\u003e\u003cstrong data-start=\"726\" data-end=\"754\"\u003eSimplifies system design\u003c\/strong\u003e — As a packaged solution, it reduces complexity, wiring, and compatibility issues — a convenient way to deploy a complete off‑grid power system with minimal configuration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"929\" data-end=\"1098\"\u003e\n\u003cp data-start=\"931\" data-end=\"1098\"\u003e\u003cstrong data-start=\"931\" data-end=\"958\"\u003eScalable \u0026amp; future‑proof\u003c\/strong\u003e — The system can be expanded or paired with solar, generators, or additional modules, allowing users to grow their setup as needs evolve.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"0\" data-end=\"269\"\u003e\u003cstrong data-start=\"0\" data-end=\"81\"\u003eQ: What is the BigBattery 12 kW 20.4 kWh ETHOS Off‑Grid Power System (K0710)?\u003c\/strong\u003e\u003cbr data-start=\"81\" data-end=\"84\"\u003eA: A complete off-grid system combining a 48 V lithium battery bank with a 12 kW inverter, designed for whole-home, cabin, or backup solar + storage power without relying on the grid.\u003c\/p\u003e\n\u003cp data-start=\"271\" data-end=\"450\"\u003e\u003cstrong data-start=\"271\" data-end=\"308\"\u003eQ: What does “20.4 kWh” refer to?\u003c\/strong\u003e\u003cbr data-start=\"308\" data-end=\"311\"\u003eA: The total usable energy storage capacity of the battery bank, providing extended off-grid operation or reliable backup during outages.\u003c\/p\u003e\n\u003cp data-start=\"452\" data-end=\"692\"\u003e\u003cstrong data-start=\"452\" data-end=\"503\"\u003eQ: What are the key design and safety features?\u003c\/strong\u003e\u003cbr data-start=\"503\" data-end=\"506\"\u003eA: LiFePO₄ chemistry, IP65-rated weather-resistant enclosure, advanced BMS with cell balancing, and an integrated internal fire-suppression system for safety and long-term reliability.\u003c\/p\u003e\n\u003cp data-start=\"694\" data-end=\"955\"\u003e\u003cstrong data-start=\"694\" data-end=\"753\"\u003eQ: What kind of inverter and capabilities are included?\u003c\/strong\u003e\u003cbr data-start=\"753\" data-end=\"756\"\u003eA: A split-phase 12 kW inverter supporting household AC loads, solar PV input via MPPT, seamless switching between solar\/battery and grid or generator power, and compatibility with large PV arrays.\u003c\/p\u003e\n\u003cp data-start=\"957\" data-end=\"1174\"\u003e\u003cstrong data-start=\"957\" data-end=\"1018\"\u003eQ: What types of users or setups is this system best for?\u003c\/strong\u003e\u003cbr data-start=\"1018\" data-end=\"1021\"\u003eA: Tiny homes, cabins, off-grid residences, remote homesteads, backup-power installations, and other structures needing robust solar + battery storage.\u003c\/p\u003e\n\u003cp data-start=\"1176\" data-end=\"1440\"\u003e\u003cstrong data-start=\"1176\" data-end=\"1268\"\u003eQ: What are the main benefits compared with simpler battery setups or lead-acid systems?\u003c\/strong\u003e\u003cbr data-start=\"1268\" data-end=\"1271\"\u003eA: Higher usable energy, maintenance-free operation, safer LiFePO₄ chemistry, longer lifespan, compact modular design, and integrated off-grid or backup functionality.\u003c\/p\u003e\n\u003cp data-start=\"1442\" data-end=\"1596\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1442\" data-end=\"1483\"\u003eQ: Is the system scalable or modular?\u003c\/strong\u003e\u003cbr data-start=\"1483\" data-end=\"1486\"\u003eA: Yes, additional ETHOS battery modules can be added to expand storage capacity and increase backup duration.\u003c\/p\u003e\n\u003ch5\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-start=\"176\" data-end=\"304\"\u003e\n\u003cp data-start=\"178\" data-end=\"304\"\u003eInstall the ETHOS system in a \u003cstrong data-start=\"208\" data-end=\"247\"\u003ecool, dry, and well-ventilated area\u003c\/strong\u003e to ensure optimal performance and prevent overheating.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"305\" data-end=\"442\"\u003e\n\u003cp data-start=\"307\" data-end=\"442\"\u003e\u003cstrong data-start=\"307\" data-end=\"367\"\u003eRegularly inspect all wiring, terminals, and connections\u003c\/strong\u003e for looseness, corrosion, or damage to maintain safe off-grid operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"443\" data-end=\"542\"\u003e\n\u003cp data-start=\"445\" data-end=\"542\"\u003eKeep the system exterior \u003cstrong data-start=\"470\" data-end=\"493\"\u003eclean and dust-free\u003c\/strong\u003e using a soft, dry cloth to avoid heat buildup.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"543\" data-end=\"653\"\u003e\n\u003cp data-start=\"545\" data-end=\"653\"\u003eAvoid exposure to \u003cstrong data-start=\"563\" data-end=\"618\"\u003edirect sunlight, moisture, and extreme temperatures\u003c\/strong\u003e to preserve internal components.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"654\" data-end=\"766\"\u003e\n\u003cp data-start=\"656\" data-end=\"766\"\u003eMonitor battery state of charge and avoid \u003cstrong data-start=\"698\" data-end=\"717\"\u003edeep discharges\u003c\/strong\u003e to maintain long-term capacity and efficiency.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"767\" data-end=\"892\"\u003e\n\u003cp data-start=\"769\" data-end=\"892\"\u003eDuring extended periods of non-use, keep the system at \u003cstrong data-start=\"824\" data-end=\"841\"\u003e50–60% charge\u003c\/strong\u003e and disconnect from all loads and power sources.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Big Battery","offers":[{"title":"Default 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