SKU: 34866625217

BigBattery ETHOS 12kW Energy Storage System | 10.2–30.7kWh | Modular LiFePO4 | Indoor-Ready | 12-Year Warranty

Sale price$3531.26 Regular price$3923.62
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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27

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Description

BigBattery ETHOS 12kW Energy Storage System | 10.2–30.7kWh | Modular LiFePO4 | Indoor-Ready | 12-Year WarrantyBigBatterys 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

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:

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 34866625217

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Steve
Boise, US
★★★★★ 4
Fast and easy but I dont trust the process to be fully automated.
The process was very smooth and fairly quick. The only challenge I had was that the CLAIM status showed complete but I had to manually go look up the status. There was no email or notification it was closed. After manually checking the status, I called customer support and they said since I called in, they would process the payout. I wonder if I didnt call in if they would have processed it? Also, the phone rep said they would issue me a amazon egift card but then the next day I received a email saying they mailed out the payout. Very poor communication but so far the process was easy and fast.
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Reviewed in the United States on April 1, 2026
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Ed
Fort Morgan, US
★★★★★ 5
Got full credit back. Great service
Sent us Amazon credit for the full amount after our lounge chairs fell apart in less than a year. Great service!
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Reviewed in the United States on November 19, 2025
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Jose NYC
West Palm Beach, US
★★★★★ 5
100% recommended
They are very responsive and a super easy process. I have protected most of my purchases with them!!!!
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Reviewed in the United States on February 14, 2026
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George R.
Cuba, US
★★★★★ 1
Don't waste your time. They'll just deny claim
Not a very reliable form of insurance. I had to file a claim on a 2 month old bedframe and they gave me the run around until I contacted Amazon.
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Reviewed in the United States on January 8, 2025
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GT
Charlottesville, US
★★★★★ 5
No hassle to file and get a claim resolved.
I have to say, I expected a lot of hoops to jump through. Companies are all very eager to take your money, but when it comes time to pay out, in this case (Product Insurance) quite often it is a different story. But to my surprise that is not the case with Asurion. I submited my claim, and a few days latter I received my check. At 77 and retired from the computer field i have seen alot of things with companies that do not care about customer service and satisfaction. But when you make a purchase from Amazon with their 30 day return policy and Asurion insurance. You can't beat it.
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Reviewed in the United States on November 20, 2025

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