Big Battery 36kW 61.4kWh ETHOS Energy Storage System (ESS) - K0967
CERTIFIED COMMERCIAL ESS! BigBattery’s 48V ETHOS systems are here, and this 61kWh commercial configuration is the ideal solution for grid-tied power in your office building, warehouse, or job site, supported by comprehensive safety, reliability, and state-of-the-art features.
The ETHOS System was built to be a versatile commercial power solution, with a stackable, modular design for easy expandability, and all hardware included to wall-mount your ETHOS 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 3 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 54000W. Plus, through their smart load control, AC coupling abilities, and peak shaving functions, you can meet your power needs and protect your business 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 office building 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 business’s power and shop the 48V ETHOS today!
Included
- 12 × 48V ETHOS 5.12kWh Stackable Battery Module
- 3 × ETHOS Control Box
- 3 × ETHOS RACK BASE
- 3 × LUXPower 12kW (18kPV) Hybrid Inverter
- 3 × Ethos Parallel Comm Cable 4.9 ft (1500mm)
- 6 × Ethos Parallel Power Cable 4.9 ft (1500mm)
What our Experts Think
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Large-scale energy storage with high power output — 61.4 kWh capacity and 36 kW continuous output can power large homes, small commercial facilities, or demanding off-grid installations.
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Modular & stackable design — Stackable 48 V modules allow flexible installation, easier maintenance, and future capacity expansion.
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Robust safety and durability — LiFePO₄ chemistry with advanced BMS, IP65-rated enclosure, and integrated protections ensure safe and reliable operation in varied environments.
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Versatile functionality — Supports UPS-style backup, solar + battery + grid integrations, load-shifting, and peak-shaving for off-grid, hybrid, or grid-tied systems.
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Commercial and heavy-duty ready — Designed for whole-house, office, or light-industrial use where continuous, reliable power and significant energy storage are critical.
Q&A
Q: What is the BigBattery 36 kW 61.4 kWh ETHOS ESS (K0967)?
A: A large-scale 48 V LiFePO₄ energy storage system with multiple stackable battery modules, inverters, and hardware — designed for whole-home, commercial, or off-grid energy storage, backup power, or solar-storage applications.
Q: What does “61.4 kWh” represent?
A: The total usable energy storage capacity of the battery bank, suitable for extended power needs, backup, or covering large loads over several hours.
Q: What are the key design and safety features?
A: LiFePO₄ chemistry, IP65-rated enclosures for dust/water resistance, advanced BMS with cell-balancing, CANBus/RS485 communications, and modular stackable design for expansion or customization.
Q: What power output does the system deliver?
A: Equipped with three 12 kW hybrid inverters for a total of 36 kW AC output, capable of powering residential, commercial, or heavy-duty off-grid loads.
Q: What applications is this system best suited for?
A: Whole-home backup, off-grid residences or cabins, commercial buildings, offices/warehouses, solar + battery installations, or any setup requiring reliable and robust energy storage.
Q: What advantages does this ESS have over simpler battery setups or lead-acid banks?
A: Large usable storage, maintenance-free lithium performance, stable and efficient power under load, modular and expandable design, robust safety and build quality, and turnkey integration with inverters and wiring.
Q: Is installation and system integration straightforward?
A: Yes, the system comes as a complete kit with battery modules, control boxes, inverters, and cabling, designed for easy installation and modular expansion.
Maintenance Tips
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Install the ETHOS ESS in a cool, dry, and well-ventilated area to maintain optimal performance and prevent overheating.
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Regularly inspect all wiring, terminals, and connectors for looseness, corrosion, or damage to ensure safe and efficient operation.
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Keep the exterior clean and dust-free with 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 state of charge and avoid deep discharges to maintain 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.
