Big Battery 36kW 43kWh Rhino 2 Energy Storage System (ESS) - K0718
HIGH-CAPACITY COMMERCIAL 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 business and home in America. This 43.02kWh commercial configuration is the ideal solution for grid-tied power in your office building, tiny home, cabin, family home, or mansion, supported by comprehensive safety, reliability, state-of-the-art features, and the highest level of battery certifications including UL9540A and UL1973.
The RHINO 2 System is built to be a durable, high-capacity commercial ESS 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 business. 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 three 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 54000W 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 office or home against unstable grids or rolling blackouts, while seeing huge savings each month on your electric bill. But if you already have an inverter installed, don’t worry! The RHINO 2 is compatible with dozens of 48V inverters on the market today.
Whether you’re looking to outfit your office or commercial space 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
- 2 × RHINO 2 Parallel Cable Kit
- 3 × RHINO 2 Conduit Box
- 3 × LUXPower 12kW (18kPV) Hybrid Inverter
What our Experts Think
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High‑power, high‑capacity system — With 43 kWh storage and up to 36 kW power output capability, this system is suitable for whole‑home backup, larger off-grid properties, or small commercial setups demanding substantial energy and surge capacity.
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Reliable LiFePO₄ + advanced safety features — Uses lithium‑iron‑phosphate chemistry with strong battery‑management protection, delivering long lifecycle, deep‑cycle performance, and improved safety compared with traditional lead‑acid systems.
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Ready for demanding loads and surge usage — High continuous and surge power output allows handling heavy appliances, motors, and equipment — useful for HVAC, pumps, workshop tools, and other high-draw devices.
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Durable, maintenance‑free design — Built to offer stable performance over many cycles without frequent maintenance — ideal for off‑grid homes, emergency backup, or remote installations.
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Scalable and versatile integration — Designed to work with inverters, solar arrays, backup generators, or hybrid systems — giving flexibility in system design and future expansions.
Q&A
Q: What is the BigBattery 36 kW 43 kWh RHINO 2 ESS (K0718)?
A: A high-capacity 48 V LiFePO₄ energy storage system with 43 kWh of usable storage and 36 kW inverter capacity, designed for whole-home, cabin, or commercial backup, off-grid, or solar-storage applications.
Q: What applications is this system suited for?
A: Houses, cabins, tiny homes, small offices, remote homesteads, off-grid residences, or any setup needing robust energy storage or backup power.
Q: What makes RHINO 2 stand out in design and safety?
A: LiFePO₄ chemistry, IP65-rated weatherproof enclosure, advanced BMS with auto cell balancing, self-heating for cold conditions, LCD monitoring display, internal fire-suppression, and CANBus/RS485 communications.
Q: What power output and inverter support does it include?
A: Typically paired with three 12 kW hybrid inverters for a total of 36 kW AC output, capable of powering household or commercial loads.
Q: What are the main advantages over simpler battery or lead-acid systems?
A: Large usable storage (43 kWh), maintenance-free lithium performance, long lifespan, stable voltage under load, weather-resistant design, and turnkey integration with inverters and solar or grid systems.
Q: Is installation and integration straightforward?
A: Yes, the system is delivered as a complete kit with battery modules, inverters, and cabling, ready for easy integration with solar, grid, or backup power systems.
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 buildup.
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Avoid exposure to direct sunlight, moisture, and extreme temperatures to protect internal components.
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Monitor battery state of charge and avoid deep discharges to preserve long-term capacity and efficiency.
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For long-term storage or periods of inactivity, maintain batteries at 50–60% charge and disconnect from all loads.
