Big Battery | 12kW | 10.2kWh | ETHOS Energy Storage System (ESS)
12kW | 10.2kWh | ETHOS Energy Storage System (ESS)
Compact, Safe, and Scalable Power for Your Home
The 12kW | 10.2kWh | ETHOS Energy Storage System (ESS) from BigBattery offers a smart and reliable way to store energy for your home, cabin, or small residence. With a compact indoor design, it’s perfect for grid-tied homes or those looking for emergency backup power.
This 48V system is built with a modular, stackable design, so it can grow with your energy needs. It comes ready for quick installation and is housed in an IP65-rated enclosure to protect against dust and water. An internal fire suppression system and advanced Battery Management System (BMS) keep the system running safely and efficiently.
Complete With a Powerful 12kW Lux Hybrid Inverter
The ETHOS system includes a 12000W Lux inverter designed to support up to 18,000W of solar input. With smart features like peak shaving, AC coupling, and load control, it helps reduce energy costs and protect against grid issues.
The inverter also includes:
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3 MPPT inputs for efficient solar charging
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A clear LCD touchscreen for easy control
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UPS functionality for smooth on-grid/off-grid transitions
Key Features:
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10.2kWh Battery Storage / 12kW Inverter Output
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Stackable & Modular – Easily expand as your energy needs grow
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Advanced BMS – Auto cell-balancing and built-in fire suppression
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IP65-Rated Enclosure – Weather-resistant for indoor environments
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Real-Time Monitoring – LED display with CANBus and RS485 communication
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Supports 18kW of Solar Panels – Maximize your PV array potential
Smart Energy for a Smarter Home
The 12kW | 10.2kWh | ETHOS Energy Storage System (ESS) is ideal for homeowners who want peace of mind during outages, reduce utility bills, or take full advantage of solar tax credits and incentives. It's a powerful, compact solution for modern energy needs.
What's Included
2 × 48V ETHOS 5.12kWh Stackable Battery Module
1 × ETHOS Control Box
1 × LUXPower 12kW Hybrid Inverter
1 × 10kWh Ethos Controller to Battery Power Cable 31.5" inch (800mm)
Specs and Downloads
| System Voltage: | 48V |
| Nominal Voltage: | 51.2V |
| Chemistry: | LiFePO4 |
| kWh Capacity: | 10.24kWh |
| Ah Capacity: | 200Ah |
| Charging Voltage Range: | 55.6 - 57V |
| Max Charge Voltage: | 57V |
| Operating Voltage Range: | 48 – 57V |
| Suggested Low Voltage Cutoff: | 48 – 50.8V |
| BMS Cutoff Range: | 42 - 47V |
| Cell Configuration: | 16S 2P |
| Max Continuous Discharge Current: | 200A |
| Max Continuous Power: | 10240W |
| Max Discharge Peak Current: | 300A (Max 5 seconds) |
| Max Charge Current: | 200A |
| Charge Temperature Range: | 32°F - 113°F (0°C - 45°C) |
| Discharge Temperature Range: | -4°F - 140°F (-20°C - 60°C) |
| Optimal Discharge Temperature Range: | 59°F - 95°F (15°C - 35°C) |
| Storage Temperature Range (SoC >50%): | -4°F - 113°F (-20°C - 45°C) (Max 6 months) |
| Weight: | 273 lb (123.8 kg) |
| Depth: | 6.7 in (170 mm) |
| Width: | 26.5 in (674 mm) |
| Height: | 43.3 in (1100 mm) |
| Max Connections: | Up to (16) parallel connections per control box |
| Protection Rating: | IP65 |
| Communications: | CANBus / RS485 |
User Manual
UL9540 Certification
UL1973 Certification
Safety Data Sheet
Inverter
Inverter User Manual
Inverter Rapid ShutDown Certificate
Inverter UL1741 Certificate
InverterIEEE1547 Certificate
Are Solar Guys Pro Authorized Retailers?
Yes! We are proud to be one of the few online retailers who are authorized retailers for every single product we carry!
When Will My Order Ship?
Most orders ship within 1–3 business days. You’ll get a tracking number as soon as it ships via email!
Do We Accept Returns?
Yes absolutely, we have a no-hassle, 30-day return policy on all items! To refer to the full policy, click HERE
Are Products Brand New?
Yes! All products on Solar Guys Pro are 100% brand-new and in perfect condition.
We do not sell any used or refurbished items.
Orders over $500 include a FREE (Normally $149.99) 80-Page DIY Solar eBook — added automatically at checkout.
Frequently Asked Questions
Get your 30% Tax Solar Credit!
Unlock substantial savings with the government's Solar Tax Credit, which offers a robust 30% deduction on the installation costs of solar systems. This attractive incentive is your ticket to leveraging solar energy's eco-friendly potential while enjoying the financial benefits.
At Solar Guys Pro, our commitment is to you. Please be reminded that our expertise does not extend to tax advice. Nonetheless, our dedicated staff is eager to guide you through the process and ensure you capitalize on this exceptional offer.
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