Big Battery 36kW 46kWh ETHOS Energy Storage System (ESS) - K0966
CERTIFIED COMMERCIAL ESS! BigBattery’s 48V ETHOS systems are here, and this 46.08kWh 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
- 9 × 48V ETHOS 5.12kWh Stackable Battery Module
- 3 × ETHOS Control Box
- 3 × LUXPower 12kW (18kPV) Hybrid Inverter
- 3 × 15kWh Ethos Controller to Battery Power Cable 4ft (1220mm)
What our Experts Think
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High-Capacity & Robust Output: 46 kWh storage with 36 kW continuous output supports whole-home loads, off-grid installations, or light-commercial power needs.
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Modular & Scalable Design: Stackable battery modules allow flexible expansion for growing solar, backup, or off-grid systems.
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Reliable LiFePO₄ Chemistry: Offers long cycle life, thermal stability, and safer operation than many other lithium battery types.
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Advanced Energy Management: Built-in BMS with cell balancing, real-time monitoring, and safety protections for overcharge, over-discharge, and temperature.
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Versatile Use Cases: Ideal for solar-plus-storage systems, UPS-style backup, peak shaving, and hybrid grid/off-grid applications.
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Durable & Low Maintenance: IP65-rated enclosure and rugged construction ensure long-term, reliable performance with minimal upkeep.
Q&A
Q: What is the Big Battery ETHOS ESS used for?
A: Designed for residential, commercial, and off-grid solar systems, delivering high-capacity, reliable energy storage.
Q: What is the power and capacity?
A: Provides 36kW continuous output with 46kWh energy capacity, supporting heavy loads and extended backup runtime.
Q: What battery chemistry does it use?
A: Uses LiFePO4 cells, offering long cycle life, high efficiency, and enhanced safety.
Q: Does it include a BMS?
A: Yes, it features an advanced Battery Management System for overcharge, over-discharge, and thermal protection.
Q: Is it compatible with inverters and solar systems?
A: Yes, it integrates seamlessly with grid-tied and off-grid inverters and solar setups for flexible energy management.
Q: How long will the batteries last?
A: LiFePO4 chemistry ensures thousands of cycles, providing years of reliable, low-maintenance operation.
Q: Why choose the ETHOS 36kW/46kWh ESS?
A: Popular for its high-capacity performance, compact footprint, robust reliability, and safety features for residential and commercial applications.
Maintenance Tips
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Inspect connections regularly: Check AC/DC terminals, busbars, and wiring for tightness, corrosion, or dust buildup.
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Monitor system performance: Use the BMS or monitoring software to track voltage, temperature, and error codes.
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Maintain cooling system: Keep fans, vents, and heat sinks clean to prevent overheating.
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Firmware updates: Apply manufacturer-recommended updates to maintain efficiency, safety, and optimal performance.
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Check grounding: Ensure proper grounding to prevent electrical hazards and maintain stable operation.
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Environmental care: Install and operate in a cool, dry, ventilated area; avoid direct sunlight, moisture, or corrosive conditions.
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Avoid overloads: Do not exceed the rated 36kW output to protect the ESS and ensure long-term reliability.
