Big Battery 24kW 43kWh Rhino 2 Energy Storage System (ESS) - K0723
HIGH-CAPACITY RESIDENTIAL ESS! The second generation of BigBattery’s flagship 48V RHINO has arrived, and the next-gen RHINO 2 is here to revolutionize power storage for every home in America. This 43.02kWh outdoor configuration is the ideal solution for grid-tied power in your tiny home, cabin, family home, mansion, or office building, supported by comprehensive safety, reliability, state-of-the-art features, and the highest level of certifications including UL9540, UL9540A, and UL1973.
The RHINO 2 System is built to be a durable, high-capacity home power solution, with a single unit design and a convenient conduit box on top of the unit for effortless cable management and a sleek finished look, with all hardware included to secure the RHINO 2 to your wall with a simple installation. The RHINO 2 comes equipped with an IP65-rated, all-weather casing, as well as an advanced BMS with auto cell-balancing, and a responsive self-heating function to ensure long-lasting safety and reliability even in the harshest of conditions. Plus, the RHINO 2 features an interactive LED display on the side of the unit, along with full CANBus and RS485 communication protocols, so you can always monitor the status and performance of your power. The RHINO 2 even boasts an internal fire extinguishing unit for ultimate peace of mind when installed inside or outside your home. Supported by these robust safety and visibility features, this power system is engineered to withstand up to 8,000 cycles at 80% depth of discharge (DoD), achieving lifespans of up to 10+ years!
But that’s not all. We pair our RHINO 2 with two cutting-edge 12000W Lux inverters, which each feature their own LCD touch screen displays, 3 MPPT inputs, an integrated UPS module for seamless on and off-grid switching, and the ability to handle PV arrays of up to 36000W across both inverters. Plus, through their 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. But if you already have an inverter at home, don’t worry! The RHINO 2 is compatible with dozens of 48V inverters on the market today.
Whether you’re looking to outfit your home with a powerful solar system or you’re simply looking to ensure emergency backup power is always available, 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 all-new 48V RHINO 2 Systems today!
Included
- 3 × 48V RHINO 2 – LiFePO4 – 280Ah – 14.34kWh
- 3 × RHINO 2 Conduit Box
- 2 × RHINO 2 Parallel Cable Kit
- 2 × LUXPower 12kW (18kPV) Hybrid Inverter
What our Experts Think
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Massive capacity & power — With 43 kWh storage and up to 24 kW output, it can power a full home, cabin, or small commercial property, handling heavy loads and extended off-grid use.
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All-weather, safe, maintenance-free design — LiFePO₄ chemistry with advanced BMS, IP65 enclosure, self-heating for cold climates, and internal fire protection ensures reliability and safety indoors or outdoors.
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Long lifespan & deep-cycle durability — Rated for up to 8,000 cycles at 80 % depth-of-discharge, providing many years of stable service, far beyond lead-acid alternatives.
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Smart integration & monitoring — Equipped with CANBus/RS485 communications, status display, and standardized connectors for smooth integration with inverters, solar arrays, and home-energy systems.
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Scalable and versatile — Ideal for grid-tied solar, off-grid homes, emergency backup, cabins, commercial setups, or as a replacement for large lead-acid battery banks; expandable for higher capacity needs.
Q&A
Q: What is the BigBattery 24 kW 43 kWh RHINO 2 ESS (K0723)?
A: A high-capacity 48 V LiFePO₄ energy storage system with 43 kWh of usable storage, paired with inverters — designed for whole-home backup, off-grid power, or solar + storage applications.
Q: What applications is this system designed for?
A: Residential homes, cabins, tiny homes, offices, or any building needing reliable backup, off-grid power, or solar energy storage, suitable for grid-tied or off-grid setups.
Q: What are the core features and safety aspects?
A: LiFePO₄ chemistry, IP65-rated weatherproof enclosure, advanced BMS with auto cell-balancing, self-heating for cold climates, CANBus/RS485 communications, LED monitoring display, and internal fire-suppression system.
Q: What power output and inverter support does it include?
A: Dual 12 kW hybrid inverters (24 kW AC total), supporting solar PV input, load control, AC coupling, and seamless on/off-grid switching.
Q: What benefits does it offer over lead-acid or simpler battery systems?
A: Large usable storage (43 kWh), maintenance-free lithium performance, robust safety features, weather-resistant design, long lifespan, and turnkey integration with inverters.
Q: Is installation and integration straightforward?
A: Yes, delivered as a complete kit with batteries, inverters, and cabling — designed for easy setup with solar arrays, grid, or backup generators.
Maintenance Tips
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Install the Rhino 2 ESS in a cool, dry, and well-ventilated area to ensure stable operation and prevent overheating.
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Regularly inspect all wiring, terminals, and connectors for looseness, corrosion, or damage to maintain safe and efficient performance.
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Keep the exterior clean and dust-free using a soft, dry cloth to prevent heat accumulation.
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Avoid exposure to direct sunlight, moisture, and extreme temperatures to protect internal components.
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Monitor state of charge and avoid deep discharges to preserve long-term capacity and efficiency.
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For long-term storage or inactivity, maintain batteries at 50–60% charge and disconnect from all loads.
