Big Battery 24kW 20.4kWh ETHOS Energy Storage System (ESS) - K0958
REVOLUTIONIZING RESIDENTIAL ESS! BigBattery’s 48V ETHOS systems are here, and this 20kWh outdoor configuration is the ideal solution for grid-tied power in your family home, cabin, or 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
- 4 × 48V ETHOS 5.12kWh Stackable Battery Module
- 2 × ETHOS Control Box
- 2 × LUXPower 12kW (18kPV) Hybrid Inverter
- 2 × 10kWh Ethos Controller to Battery Power Cable 31.5" inch (800mm)
What our Experts Think
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Compact Yet Powerful Storage: With 20.4 kWh capacity and 24 kW output, it offers a balanced energy storage option suitable for small homes, cabins, or backup power needs.
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Efficient LiFePO₄ Technology: Leverages long‑life lithium chemistry for stable performance, safety, and much longer lifespan than conventional batteries.
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Ideal for Small to Medium Loads: Well-suited for powering essential home circuits, lighting, small appliances, and emergency backup without overkill.
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Smart Energy Management: Integrated BMS ensures safe charging/discharging, cell balancing, and protection against overcharge, over‑discharge, and thermal issues.
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Scalable & Versatile: Good baseline for off‑grid or solar‑plus‑storage setups, easy to expand later if needs grow.
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Low Maintenance & Reliable: Robust, reliable design meant for long‑term use with minimal upkeep — a practical “set-and-forget” storage solution.
Q&A
Q: What is the Big Battery ETHOS ESS used for?
A: Designed for residential, commercial, and off-grid solar systems, providing reliable, high-capacity energy storage.
Q: What is the power and capacity?
A: Delivers 24kW continuous output with 20.4kWh energy capacity, supporting moderate loads and backup power needs.
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, features an advanced Battery Management System for overcharge, over-discharge, and thermal protection.
Q: Is it compatible with inverters and solar systems?
A: Yes, 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, delivering years of reliable, low-maintenance operation.
Q: Why choose the ETHOS 24kW/20.4kWh ESS?
A: Popular for its compact design, high reliability, scalable energy storage, and safety features for residential and commercial use.
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 24kW output to protect the ESS and ensure long-term reliability.
