Big Battery 48V RHINO 2 – LiFePO4 – 280Ah – 14.34kWh - FRHNO-48143-G2
A NEW GENERATION OF RESIDENTIAL POWER! BigBattery’s 48V RHINO 2 is here, and this 14.34kWh, wall-mounted, UL-certified system is a reliable solution when it comes to grid-tied power for any size home in America. The IP65-rated, all-weather design withstands harsh conditions for installing outdoors with confidence, and the integrated self-heating feature ensures optimum performance in lower temperatures.
Experience a longer-lasting battery that boasts a LiFePO4 chemistry, the safest battery chemistry on the market today, and provides over 8000 cycles at 80% DOD and a continuous discharge current of 200A. Enjoy ultimate peace of mind with unparalleled safety features like our built-in fire suppression system, an advanced BMS capable of auto-balancing the cells inside, as well as our 10-year warranty which stands behind every BigBattery solution.
The RHINO 2 System was built to be a rugged home power solution, with a stackable, modular design for easy scalability, and all the necessary components included to easily mount your RHINO 2 to your wall. The RHINO 2 can pair with any inverter on the market, as well as being able to connect with pre-existing solar systems. Plus, it features an interactive LCD display, so you can always keep an eye on the status and performance of your power.
But that’s not all. We pair our RHINO 2 with a cutting-edge 12000W Lux inverter, which features its own LCD touch screen display, 3 MPPT inputs, an integrated UPS module for seamless on and off-grid switching, and the ability to handle PV arrays of up to 18000W. Plus, through its smart load control, AC coupling abilities, and peak shaving function, you can meet your power needs and protect your home against unstable grids or rolling blackouts, while seeing huge savings each month on your electric bill.
Whether you’re looking to ensure emergency backup power is always available, or you’re looking to outfit your home with a powerful solar system, the RHINO 2 ensures reliable, efficient power delivery day in and day out, allowing you to save on utilities, or get rewarded for giving back to the grid through net metering programs and other tax incentives. Take control of your home’s power and shop the 48V RHINO 2 today!
INCLUDED
(1) Mounting Bracket
(1) X Bracket
(6) Expansion Bolt
(2) Red & Black Battery to Inverter Power Cables (3.3 FT)
(1) Battery to Inverter Comm Cable (5 FT)
What our Experts Think
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All‑round off‑grid powerhouse — 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.
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Large energy storage with strong output — 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.
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Ready for real-world demands — Solid battery chemistry and robust BMS ensure deep‑cycle durability and stable power delivery, even under demanding or fluctuating load conditions.
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Simplifies system design — 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.
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Scalable & future‑proof — The system can be expanded or paired with solar, generators, or additional modules, allowing users to grow their setup as needs evolve.
Q&A
Q: What is the BigBattery 12 kW 20.4 kWh ETHOS Off‑Grid Power System (K0710)?
A: 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.
Q: What does “20.4 kWh” refer to?
A: The total usable energy storage capacity of the battery bank, providing extended off-grid operation or reliable backup during outages.
Q: What are the key design and safety features?
A: 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.
Q: What kind of inverter and capabilities are included?
A: 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.
Q: What types of users or setups is this system best for?
A: Tiny homes, cabins, off-grid residences, remote homesteads, backup-power installations, and other structures needing robust solar + battery storage.
Q: What are the main benefits compared with simpler battery setups or lead-acid systems?
A: Higher usable energy, maintenance-free operation, safer LiFePO₄ chemistry, longer lifespan, compact modular design, and integrated off-grid or backup functionality.
Q: Is the system scalable or modular?
A: Yes, additional ETHOS battery modules can be added to expand storage capacity and increase backup duration.
Maintenance Tips
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Install the ETHOS system in a cool, dry, and well-ventilated area to ensure optimal performance and prevent overheating.
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Regularly inspect all wiring, terminals, and connections for looseness, corrosion, or damage to maintain safe off-grid operation.
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Keep the system exterior clean and dust-free using a soft, dry cloth to avoid heat buildup.
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Avoid exposure to direct sunlight, moisture, and extreme temperatures to preserve internal components.
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Monitor battery state of charge and avoid deep discharges to maintain long-term capacity and efficiency.
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During extended periods of non-use, keep the system at 50–60% charge and disconnect from all loads and power sources.
