SKU: 2231185955

Fox ECS 4.03kWh HV Battery Slave

Sale price$562.40 Regular price$624.89
Save 10%

Pay in installments of $156.22 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 22 - Sep 27

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Fox ECS 4.03kWh HV Battery SlaveFox ECS 4. 03kWh HV Battery Slave The Fox ECS 4. 03kWh HV Battery Slave is a high performance lithium ion battery designed to expand the storage capacity of Fox ESS Energy Cube systems. With a nominal energy of 4. 03kWh, this modular battery provides exceptional performance and flexibility for residential and commercial solar power systems. Its high depth of discharge and reliable energy output make it an excellent solution for those looking to

Fox ECS 4.03kWh HV Battery Slave

 

The Fox ECS 4.03kWh HV Battery Slave is a high-performance lithium-ion battery designed to expand the storage capacity of Fox ESS Energy Cube systems. With a nominal energy of 4.03kWh, this modular battery provides exceptional performance and flexibility for residential and commercial solar power systems. Its high depth of discharge and reliable energy output make it an excellent solution for those looking to increase energy independence or ensure backup power availability.

 

Key Features

  • 4.03kWh Capacity – Provides reliable energy storage for residential and commercial applications
  • Scalable to 28.21kWh – Expandable with multiple modules for increased storage capacity (1 Master + up to 6 Slaves)
  • High Depth of Discharge (90%) – Maximizes the usable energy from the battery
  • Wide Temperature Tolerance – Designed to operate in various environmental conditions
  • Easy Installation – Compact, lightweight design for quick and simple setup
  • CAN/RS485 Communication – Enables seamless integration with inverters and monitoring systems
  • High Voltage – Provides stable and efficient power output

 

Technical Specifications

  • Nominal Energy: 4,050 Wh
  • Supplier Part No: Energy Cube CS4100
  • Weight: 34.8 kg
  • Battery Type: Lithium-Ion
  • Depth of Discharge: 90%
  • Voltage: 52 V
  • Continuous Discharge Rate (Normal Use): 2,875 W
  • Maximum Discharge Rate (5 Minutes): 2,875 W
  • Surge Discharge Rate (15 Seconds): 2,875 W
  • Maximum Charge Rate (5 Minutes): 2,875 W
  • Part No: FE-HV-ECS-4100

 

Applications

  • Residential Solar Storage – Stores excess solar energy for use during non-sunny periods or peak demand
  • Commercial Power Backup – Ensures essential equipment remains powered during grid outages
  • Off-Grid Systems – Enables full energy independence with reliable solar storage

 

What’s Inside the Box?

  • Fox ECS 4.03kWh HV Battery Slave
  • User Manual
  • Installation Guide

 

Important Notes

  • This battery module is part of a modular system and requires at least two modules for operation (1 Master + 1 Slave).
  • A maximum of seven modules can be connected in a single stack (1x Master + 6x Slaves).
  • If adding new battery modules to an existing Energy Cube stack, ensure compatibility with your original battery modules. Please contact your technical representative via the portal and provide a photograph of your current battery stack for verification.
  • Connector Type: Ensure the new battery matches the connector type of your existing setup when expanding the system.
  • Installation Requirement: This battery must be installed by a qualified electrician following local wiring standards and safety regulations. Incorrect installation may cause system issues, and Solareon UK is not responsible for malfunctions resulting from improper installation.

 

The Fox ECS 4.03kWh HV Battery Slave is a reliable, scalable, and high-efficiency storage solution for solar energy systems. Whether for self-consumption, backup power, or off-grid applications, this battery offers long-lasting performance and seamless integration into your energy system.

 

Disclaimer:


All product information provided by Solareon UK is intended for general guidance only and may be subject to change or error. Solareon UK does not accept liability for any inaccuracies or omissions in the product specifications displayed. For accurate and detailed technical information, please refer to the manufacturer’s official datasheet available in the 'Downloads' section. We strongly advise confirming all critical details directly with the manufacturer prior to making purchasing or installation decisions.

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: 2231185955

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 27 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Chezza
Birmingham, US
★★★★★ 5
Well made and durable.
Color: Carbonized, Size: 3-piece
I'm thrilled with these boards, Just the right size for individual jobs. Well made, wash up beautifully and I highly recommend them. Great value for the money too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
A
Verified Purchase
Anthony
Massapequa, US
★★★★★ 5
Solid bamboo board set for the price
Color: Carbonized, Size: 3-piece
This bamboo cutting board set has been a nice addition to my kitchen. I like having different sizes available, and I especially appreciate being able to reduce how often I use plastic cutting boards. Mine did have a strong odor at first, but after washing them and letting them air out, that went away. They also seem good for the price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
T
Verified Purchase
Teresa
Houston, US
★★★★★ 5
Wood cutting boatds
Color: Carbonized, Size: 3-piece
These are great cuting boards. I love the different sizes. Great quality product, easy to use, easy to clean, sturdy, bamboo material is great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
D
Verified Purchase
Davejayhawk
Cuba, US
★★★★★ 4
Awesome Boards….BUT the Smell!!!!
Color: Carbonized, Size: 3-piece
I’d love to give these 5 stars, they are heavy, well made, smooth, deep juice grooves, just nice….but the smell! I washed them, then used vinegar on them, set them outside over night, washed them again….its better but still present. I’d love some guidance on this. I’m hoping it goes away in a few days. It’s like a very strong woodsy smell that actually made my whole kitchen smell like these boards! Edit: Ok, here's what I did. Washed, let dry, coated and scrubbed with apple cider vinegar, set them in a high air flow area for 24 hours (I put mine outside on the patio over night), washed and scrubbed again, let dry, scrubbed with lemons and salt, let dry, washed again. Finally, there is still a slight smell if you push them against your nose but that seems to be fading as well. So, great boards if you want to go stubbornly go through the smell removal process. I don't think it's a chemical smell, I think it's processed bamboo that is shrink wrapped in air tight packaging too soon after manufacturing. Anyway, I'll move this to 4 stars....but lots of work involved here!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
S
Verified Purchase
Shannon Latham
Chelsea, US
★★★★★ 5
Obsessed with these boards!!
Color: Carbonized, Size: 3-piece
I love these cutting boards! It’s one of those items you don’t even know you need until you get them. Three perfect smaller sizes that can be used for so many different serving ideas. Great quality, great price. Definitely worth the buy!!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026

recommand products