Big Battery Ethos 2x Expansion Kit - Green Vista Living
Big Battery Ethos 2x Expansion Kit - Green Vista Living
Big Battery Ethos 2x Expansion Kit - Green Vista Living
Big Battery Ethos 2x Expansion Kit - Green Vista Living
Big Battery Ethos 2x Expansion Kit - Green Vista Living
Big Battery Ethos 2x Expansion Kit - Green Vista Living
Big Battery Ethos 2x Expansion Kit - Green Vista Living
Big Battery Ethos 2x Expansion Kit - Green Vista Living
Big Battery Ethos 2x Expansion Kit - Green Vista Living
Big Battery Ethos 2x Expansion Kit - Green Vista Living

BigBattery Ethos 2x Expansion Kit

Authorized BigBattery Dealer | Full Vendor Warranty Included

Customers rate us 4.6/5 based on 417 reviews.
$2,217.00
$4,340.00
$2,217.00
Save $2,123.00
Hurry! Only a few left in stock
Order in the next h min to get this to you between and

Need Help? Talk to our experts today!

Live Chat:
Bottom Right Text or Call us: 
513-743-2829
🚚
Shipping & Delivery Time Shipping timeline above is an estimate. Please live chat for precise ETAs and shipping costs.
🛡️
30-Day Return Guarantee
Check Policy
💲
Price Match Available
🏷️
Sales Tax Free! (Except AZ, CA, FL, OH, IL)
☀️ SUMMER DEALS ARE HERE – LOWEST PRICES GUARANTEED ☀️
Summer prices are here! Shop now to grab the lowest prices of the season before the sun sets.
Big Battery Ethos 2x Expansion Kit - Green Vista Living

BigBattery

BigBattery Ethos 2x Expansion Kit

$4,340.00 $2,217.00
Big Battery Ethos 2x Expansion Kit - Green Vista Living
Big Battery Ethos 2x Expansion Kit - Green Vista Living
Big Battery Ethos 2x Expansion Kit - Green Vista Living
Big Battery Ethos 2x Expansion Kit - Green Vista Living
Big Battery Ethos 2x Expansion Kit - Green Vista Living

BigBattery

BigBattery Ethos 2x Expansion Kit

$4,340.00 $2,217.00
  • Description

Big Battery Ethos 2x Expansion Kit

Boost your BigBattery Ethos system's capacity with the convenient 2x Expansion Kit! This kit seamlessly integrates with your existing system, doubling your stored energy for extended power during outages, self-sufficiency, or peak demand times.

Features:

  • 2x 5.12kWh stackable LiFePO4 battery modules for reliable, safe, and efficient energy storage
  • Modular design for easy expansion and customization
  • Compatible with all BigBattery Ethos systems
  • Intelligent Battery Management System (BMS) for optimal performance and safety
  • IP65-rated weatherproof casing for indoor or outdoor installation
  • Interactive LED display for real-time system monitoring
  • CANBus/RS485 communication protocols for easy integration with other systems

Benefits:

  • Increase your home's energy independence: Store more solar power and reduce reliance on the grid.
  • Enjoy extended backup power: Weather outages with confidence, knowing you have ample energy for essential appliances.
  • Maximize self-sufficiency: Generate and store your own clean energy for a smaller carbon footprint.
  • Reduce reliance on peak grid pricing: Store energy during off-peak hours and use it during peak times to save money.
  • Scalable solution: Expand your system as your energy needs grow.
  • Peace of mind: Knowing you have reliable backup power brings security and comfort.

Specifications:

  • System Voltage: 48V
  • Nominal Voltage: 51.2V
  • Chemistry: LiFePO4
  • Capacity: 10.24kWh (per kit)
  • Ah Capacity: 200Ah
  • Charging Voltage Range: 55.6 - 57V
  • Dimensions: 20.5" x 19.3" x 12.6"
  • Weight: 273 lbs 

Order your BigBattery Ethos 2x Expansion Kit today and unlock the power of a truly independent and resilient home energy system!

Frequently Asked Questions

Yes! We provide free and fast shipping on MOST orders within the continental United States. However, some specific brands and items will require a quote. You can live chat or call us for a quote
Most orders ship out within 1–2 business days and arrive within 3–5 business days depending on your location.
We offer easy returns as long as your item meets the conditions outlined in our Return Policy. Items must be unused, in original packaging, and returned within the specified return window.
Absolutely! Our in-house product experts are here to help. Live chat or call us 513-743-829 for personalized advice before or after your purchase.
Yes. All products include any applicable manufacturer warranties, and we’ll help you handle any warranty claims if needed.
Yes, we only sell 100% authentic, brand-new products, sourced directly from our manufacturers or authorized distributors.

Over 2,000+ Online Orders

4.64 ★ (417)
Verified
REAL REVIEWS, REAL RESULTS

Feedback From Our Customers

At Green Vista Living, we pride ourselves on delivering top-quality products and exceptional service to solar professionals and homeowners alike. Here's what our customers have to say about their experiences with us.

Kevin Leary
May 18, 2025
★★★★★

Incredible Tech Support from Anees of Green Vista Living. Exceptional service and went above and beyond on every question.

Bryan Cunningham
Off grid Kit • Dec 21, 2025
★★★★★

Shipment was slow due to high demand, but the team kept me informed and ensured everything arrived properly.

Related Products