BigBattery’s ETHOS 12kW Energy Storage Systems offer a scalable, UL-certified solution for grid-tied applications, combining high-capacity lithium iron phosphate (LiFePO4) batteries with a powerful 12kW EG4 hybrid inverter. Designed for indoor installations, these systems provide reliable backup power and energy independence for various home sizes.
Key Features & Benefits:
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Modular Capacity Options: Choose from 10.2kWh, 15.3kWh, 20.4kWh, or 30.7kWh configurations to match your energy needs.
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High-Performance Inverter: 12kW EG4 hybrid inverter with 3 MPPT inputs, LCD touchscreen, and integrated UPS for seamless on/off-grid transitions.
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Advanced Safety: IP65-rated enclosure, internal fire suppression, and smart BMS with auto cell-balancing ensure long-term reliability.
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User-Friendly Monitoring: Interactive LED display with CANBus and RS485 communication protocols for real-time system insights.
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DIY-Friendly Installation: Stackable, wall-mountable design with all necessary hardware included for straightforward setup.
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Financial Incentives: Eligible for a 30% Federal Tax Credit, enhancing affordability.
Which ETHOS System Is Right for You?
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10.2kWh: Ideal for tiny homes or cabins requiring essential backup power.
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15.3kWh: Suitable for small to medium-sized homes aiming for partial energy independence.
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20.4kWh: Designed for larger homes seeking comprehensive backup solutions.
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30.7kWh: Best for expansive residences or properties with high energy demands, offering extensive autonomy.
User Manual / Specifications:
BigBattery’s ETHOS 12kW Energy Storage Systems offer a scalable, UL-certified solution for grid-tied applications, combining high-capacity lithium iron phosphate (LiFePO4) batteries with a powerful 12kW EG4 hybrid inverter. Designed for indoor installations, these systems provide reliable backup power and energy independence for various home sizes.
Key Features & Benefits:
-
Modular Capacity Options: Choose from 10.2kWh, 15.3kWh, 20.4kWh, or 30.7kWh configurations to match your energy needs.
-
High-Performance Inverter: 12kW EG4 hybrid inverter with 3 MPPT inputs, LCD touchscreen, and integrated UPS for seamless on/off-grid transitions.
-
Advanced Safety: IP65-rated enclosure, internal fire suppression, and smart BMS with auto cell-balancing ensure long-term reliability.
-
User-Friendly Monitoring: Interactive LED display with CANBus and RS485 communication protocols for real-time system insights.
-
DIY-Friendly Installation: Stackable, wall-mountable design with all necessary hardware included for straightforward setup.
-
Financial Incentives: Eligible for a 30% Federal Tax Credit, enhancing affordability.
Which ETHOS System Is Right for You?
-
10.2kWh: Ideal for tiny homes or cabins requiring essential backup power.
-
15.3kWh: Suitable for small to medium-sized homes aiming for partial energy independence.
-
20.4kWh: Designed for larger homes seeking comprehensive backup solutions.
-
30.7kWh: Best for expansive residences or properties with high energy demands, offering extensive autonomy.
User Manual / Specifications:
BigBattery ETHOS 12kW Energy Storage System | 10.2–30.7kWh | Modular LiFePO4 | Indoor-Ready | 12-Year Warranty
- Regular price
- $7,847.25
- Sale price
- $7,847.25
- Regular price
-
$9,809.00
No obligation — get a custom quote in minutes
Lifetime Support on Every Order, Guaranteed.
BigBattery ETHOS 12kW Energy Storage System | 10.2–30.7kWh | Modular LiFePO4 | Indoor-Ready | 12-Year Warranty
Testimonials
50,000+ Happy Customers
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"Amazing experience from start to finish. The team was incredibly helpful and the system is performing beyond expectations. Couldn't be happier with our decision."
"The whole process was seamless. From ordering to installation, everything was straightforward. Our electricity bill has dropped significantly!"
"Best investment we've made for our home. The customer support is outstanding — they walked us through every step of the setup process."
"We compared prices everywhere and this was by far the best deal. The quality of the panels is top-notch and installation guidance was superb."
"Great product and even better customer service. They helped us design the perfect system for our needs. Highly recommend to anyone considering solar."
"From the free proposal to the final install, everything exceeded our expectations. We're producing more energy than we consume most months!"
"Amazing experience from start to finish. The team was incredibly helpful and the system is performing beyond expectations. Couldn't be happier with our decision."
"The whole process was seamless. From ordering to installation, everything was straightforward. Our electricity bill has dropped significantly!"
"Best investment we've made for our home. The customer support is outstanding — they walked us through every step of the setup process."
"We compared prices everywhere and this was by far the best deal. The quality of the panels is top-notch and installation guidance was superb."
"Great product and even better customer service. They helped us design the perfect system for our needs. Highly recommend to anyone considering solar."
"From the free proposal to the final install, everything exceeded our expectations. We're producing more energy than we consume most months!"
Support
Frequently Asked Questions
Can't find what you're looking for? Reach out to our friendly support team.
Contact SupportYes. Our team can help you choose the right solar kit based on your goals, power needs, and location. We provide personalized guidance before and after your purchase at no additional cost.
Most products ship directly to your door using the most cost effective ground shipping services depending on size. You’ll receive tracking details and delivery coordination as soon as your order ships.
Many of our customers complete the majority of installation themselves using our diagrams and support resources. For final electrical connections, a licensed electrician may be required depending on local codes.
While we do not directly install systems, we can help connect you with qualified local professionals and provide technical documentation to support your installer.
We stand behind our products. If you have specific questions about returns, eligibility, or specific product conditions, you can learn more in our help center linked below.
All components are backed by manufacturer warranties. In addition, our team provides free lifetime technical support to assist you throughout the life of your system.
Yes! We offer a variety of flexible payment plans to fit any budget. Options include monthly financing with competitive interest rates, and some plans require no money down. Apply during checkout and get approved in minutes.
You’ll have direct access to our support team via phone, email, and chat. Whether it’s setup guidance or troubleshooting years down the road, we’re here to help.
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