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FoxESS 5.7-US + 8kWh Battery + Hub - FoxESS 5.7-US + 8kWh Battery + Hub

FoxESS 8kWh Energy Storage System - 8kW | Portlandia Electric Supply

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FoxESS 5.7-US + 8kWh Battery + Hub - FoxESS 5.7-US + 8kWh Battery + Hub

$8,453.55 USD

$ $8,453.55 USD

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In Stock

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9+ sold

In the last 7 days

Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

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What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

FoxESS 5.7-US 8kWh hub bundle — whole-home backup kit

FoxESS 5.7-US + 8kWh Battery + Hub is a powerful, intelligent, and future-ready energy storage system designed for homeowners and small commercial users who want reliable backup power, improved energy efficiency, and greater control over electricity usage. Built with advanced lithium battery technology and a high-performance inverter hub, this system supports stable energy storage, seamless power distribution, and long-term sustainability.

As energy costs continue to rise and grid reliability becomes uncertain, investing in a robust battery and inverter solution ensures uninterrupted power and smarter energy management. This integrated system is engineered to work efficiently with renewable energy sources while offering exceptional performance, safety, and scalability.

The FoxESS 5.7-US 8kWh hub bundle combines the H1-5.7-US split-phase hybrid inverter, one ECS4000-H2 (≈7.95–8.0 kWh) high-voltage battery, and the FOX Hub G2 energy gateway for fast UPS-like transfer and clean whole-home backup. (See official US H1/AC1, ECS4000, and FOX Hub G2 datasheets.)

What’s included

H1-5.7-US hybrid inverter, 120/240 V split-phase, 5.7 kW AC output (Type 4X). ^[datasheet]
ECS4000-H2 battery stack: CM4000 + 1×CS4000 ≈7.95 kWh usable, 90% DoD, LFP. ^[datasheet]
FOX Hub G2 gateway: 200 A busbar, 48 kW rated, ~20 ms transfer, Type 3R. ^[datasheet]

Key benefits

Seamless on/off-grid transition (~20 ms) with whole-home wiring through FoxESS 5.7-US 8kWh hub bundle.
High-voltage LFP stack with 90% DoD and modular expansion up to 27.8 kWh.
Parallel up to 4 inverters; built-in Wi-Fi/LAN monitoring.
Outdoor-ready enclosures: inverter Type 4X; hub Type 3R.

Specifications

**FoxESS 5.7-US 8kWh hub bundle** — technical data
AC output (inverter)	5.7 kW nominal, split-phase 120/240 V. ^{[H1/AC1 V4.2]}
Battery energy (initial)	≈7.95–8.0 kWh (ECS4000-H2: 115.2 V, 90% DoD). ^[ECS4000]
Expandable	Up to 7 modules in series (max 27.8 kWh). ^[ECS4000]
Gateway rating	200 A busbar, 48 kW rated AC, ~20 ms switchover. ^{[Hub G2]}
Enclosure ratings	Inverter Type 4X; Hub Type 3R. ^{[H1/AC1, Hub G2]}
Certifications	UL1741/1741SB, IEEE 1547 (inverter); UL9540/1973/9540A (battery). ^{[H1/AC1, ECS4000]}

Choose the FoxESS 5.7-US 8kWh hub bundle for clean installation, rapid transfer, and modular storage that grows with your needs.

What Makes FoxESS 5.7-US + 8kWh Battery + Hub a Reliable Choice?

The FoxESS 5.7-US + 8kWh Battery + Hub is designed with a strong focus on efficiency, durability, and user convenience. The system combines a 5.7kW inverter with an 8kWh high-capacity battery, enabling users to store surplus energy and use it whenever needed.

The hub plays a critical role by managing energy flow between solar panels, battery storage, and household loads. This intelligent coordination ensures minimal energy loss, optimized charging cycles, and stable power delivery during outages or peak demand periods.

High-Capacity Battery Performance and Intelligent Power Management

This system features an advanced lithium-ion battery that delivers consistent performance and a long operational lifespan. The 8kWh capacity is ideal for covering essential household loads, reducing dependency on the grid, and supporting energy-efficient lifestyles.

The inverter hub ensures seamless energy conversion and real-time monitoring. With smart energy distribution, users can prioritize critical appliances, improve self-consumption of stored power, and enhance overall system efficiency. The design emphasizes thermal stability, electrical safety, and long-term reliability.

Key Features of FoxESS 5.7-US + 8kWh Battery + Hub

The FoxESS 5.7-US + 8kWh Battery + Hub offers a range of features that make it suitable for both residential and light commercial installations:

High-efficiency inverter with stable output
Scalable battery design for future expansion
Intelligent hub for seamless energy control
Compatible with renewable energy systems
Advanced safety protections and monitoring
Compact, modern design for easy installation

These features ensure users gain maximum value, energy savings, and peace of mind over the system’s lifespan.

Installation Flexibility and Long-Term Scalability

Installation is straightforward due to the system’s modular structure and compact form factor. The battery and hub can be configured to suit different energy requirements, making it adaptable for growing power needs.

Scalability is a major advantage, allowing users to add additional battery capacity in the future without replacing the entire system. This flexibility makes the solution future-proof and cost-effective, especially for users planning long-term energy independence.

Benefits of Choosing FoxESS 5.7-US + 8kWh Battery + Hub

Choosing the FoxESS 5.7-US + 8kWh Battery + Hub provides multiple long-term benefits:

Reduced electricity bills through stored energy usage
Reliable backup power during outages
Improved energy independence and sustainability
Efficient power management with smart controls
Durable system built for long-term performance

This solution empowers users to take control of their energy consumption while contributing to a more sustainable future.

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

FoxESS 5.7-US 8kWh hub bundle — whole-home backup kit

What’s included

H1-5.7-US hybrid inverter, 120/240 V split-phase, 5.7 kW AC output (Type 4X). ^[datasheet]
ECS4000-H2 battery stack: CM4000 + 1×CS4000 ≈7.95 kWh usable, 90% DoD, LFP. ^[datasheet]
FOX Hub G2 gateway: 200 A busbar, 48 kW rated, ~20 ms transfer, Type 3R. ^[datasheet]

Key benefits

Seamless on/off-grid transition (~20 ms) with whole-home wiring through FoxESS 5.7-US 8kWh hub bundle.
High-voltage LFP stack with 90% DoD and modular expansion up to 27.8 kWh.
Parallel up to 4 inverters; built-in Wi-Fi/LAN monitoring.
Outdoor-ready enclosures: inverter Type 4X; hub Type 3R.

Specifications

**FoxESS 5.7-US 8kWh hub bundle** — technical data
AC output (inverter)	5.7 kW nominal, split-phase 120/240 V. ^{[H1/AC1 V4.2]}
Battery energy (initial)	≈7.95–8.0 kWh (ECS4000-H2: 115.2 V, 90% DoD). ^[ECS4000]
Expandable	Up to 7 modules in series (max 27.8 kWh). ^[ECS4000]
Gateway rating	200 A busbar, 48 kW rated AC, ~20 ms switchover. ^{[Hub G2]}
Enclosure ratings	Inverter Type 4X; Hub Type 3R. ^{[H1/AC1, Hub G2]}
Certifications	UL1741/1741SB, IEEE 1547 (inverter); UL9540/1973/9540A (battery). ^{[H1/AC1, ECS4000]}

Choose the FoxESS 5.7-US 8kWh hub bundle for clean installation, rapid transfer, and modular storage that grows with your needs.

What Makes FoxESS 5.7-US + 8kWh Battery + Hub a Reliable Choice?

High-Capacity Battery Performance and Intelligent Power Management

Key Features of FoxESS 5.7-US + 8kWh Battery + Hub

The FoxESS 5.7-US + 8kWh Battery + Hub offers a range of features that make it suitable for both residential and light commercial installations:

High-efficiency inverter with stable output
Scalable battery design for future expansion
Intelligent hub for seamless energy control
Compatible with renewable energy systems
Advanced safety protections and monitoring
Compact, modern design for easy installation

These features ensure users gain maximum value, energy savings, and peace of mind over the system’s lifespan.

Installation Flexibility and Long-Term Scalability

Benefits of Choosing FoxESS 5.7-US + 8kWh Battery + Hub

Choosing the FoxESS 5.7-US + 8kWh Battery + Hub provides multiple long-term benefits:

Reduced electricity bills through stored energy usage
Reliable backup power during outages
Improved energy independence and sustainability
Efficient power management with smart controls
Durable system built for long-term performance

This solution empowers users to take control of their energy consumption while contributing to a more sustainable future.

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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

Jacob B

Easy Process, Genuine Support

Patrick B

Off Grid Solar Purchase

James Martin

Highly Recommend

Brian H

Solar Kit for Mobile Work Van

Keith S

Best Tech Support

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