Big Battery 24kW 40.9kWh ETHOS Energy Storage System (ESS) - K0960
REVOLUTIONIZING RESIDENTIAL ESS! BigBattery’s 48V ETHOS systems are here, and this 40kWh outdoor configuration is the ideal solution for grid-tied power in your multi-room family home or multi-level mansion, supported by comprehensive safety, reliability, and state-of-the-art features.
The ETHOS System was built to be a versatile home power solution, with a stackable, modular design for easy expandability, and all hardware included to mount your ETHOS in your garage, shed, or exterior wall with an effortless installation. The ETHOS comes equipped with an IP65-rated casing, an internal fire suppression system, as well as an advanced BMS with auto cell-balancing to ensure long-lasting safety and reliability. Plus, its control box features an interactive LED display, along with CANBus and RS485 communication protocols, so you can always monitor the status and performance of your power.
But that’s not all. We pair this ETHOS system with 2 cutting-edge 12000W Lux inverters, which feature their own LCD touch screen displays, 3 MPPT inputs each, integrated UPS modules for seamless on and off-grid switching, and the ability to handle PV arrays of up to 36000W. Plus, through their smart load control, AC coupling abilities, and peak shaving functions, 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 ETHOS 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 ETHOS today!
Included
- 8 × 48V ETHOS 5.12kWh Stackable Battery Module
- 2 × ETHOS Control Box
- 2 × ETHOS RACK BASE
- 2 × LUXPower 12kW (18kPV) Hybrid Inverter
- 2 × Ethos Parallel Comm Cable 4.9 ft (1500mm)
- 4 × Ethos Parallel Power Cable 4.9 ft (1500mm)
What our Experts Think
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Very high capacity + strong output — 71.7 kWh storage with 24 kW continuous power output, suitable for full-home energy needs, extended off-grid living, or heavy-duty backup, powering major appliances, HVAC, or small commercial loads.
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Reliable, weather-resistant build — LiFePO₄ cells with advanced BMS, IP65-rated enclosure, and self-heating support safe and stable operation in diverse environments.
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Long service life & deep-cycle durability — Designed for up to ~8,000 cycles at 80% depth-of-discharge, offering many years of reliable service and high usable capacity compared to lead-acid alternatives.
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Advanced safety and monitoring — Integrated protections, cell-balancing, and CANBus/RS485 monitoring make it ideal for whole-home backup or solar-plus-storage systems.
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Versatile for solar integration, backup, or off-grid — Stores excess solar or off-peak grid energy for later use, reducing grid dependence, cutting electricity costs, and enhancing energy resilience.
Q&A
Q: What is the BigBattery 24 kW 71.7 kWh Rhino 2 ESS (K0717)?
A: A high-capacity 48 V LiFePO₄ energy storage system with multiple battery modules and hybrid inverters, designed for whole-home, off-grid, commercial, or backup-power applications.
Q: What does “71.7 kWh” represent?
A: The total usable energy storage capacity of the battery bank, suitable for extended backup or continuous energy use.
Q: What are the core design and safety features?
A: LiFePO₄ chemistry, IP65-rated weatherproof enclosures, advanced BMS with cell balancing, CANBus/RS485 communications, and support for all-weather installation.
Q: What kind of power output and inverter support does the system provide?
A: Up to 24 kW AC output via hybrid inverters, with support for solar input, load control, and seamless grid/off-grid switching.
Q: What applications is this ESS best suited for?
A: Residential homes, cabins, off-grid dwellings, offices, commercial buildings, or solar + battery storage setups requiring high-capacity energy storage and backup power.
Q: What advantages does this ESS offer over simpler battery setups or lead-acid banks?
A: Large usable storage, maintenance-free lithium performance, stable and efficient power under load, robust and weatherproof build, long lifespan, and turnkey integration with inverters and cabling.
Q: Is installation and integration user-friendly?
A: Yes, the system comes as a complete kit with battery modules, inverters, conduit boxes, and cabling for easy installation and integration 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 buildup.
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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.
