SKU: 86172395799

Fox ECS 4.03kWh HV Battery Master

Sale price$607.30 Regular price$674.78
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Description

Fox ECS 4.03kWh HV Battery MasterFox ECS 4. 03kWh HV Battery Master Scalable High Voltage Energy Storage The Fox ECS 4. 03kWh HV Battery Master is a high performance lithium ion battery designed to serve as the control module in a scalable energy storage system. This master battery unit ensures seamless communication and energy distribution across the battery stack, making it an essential component for residential and commercial energy storage applications. With a 4. 03kWh capacity

Fox ECS 4.03kWh HV Battery Master – Scalable High-Voltage Energy Storage

 

The Fox ECS 4.03kWh HV Battery Master is a high-performance lithium-ion battery designed to serve as the control module in a scalable energy storage system. This master battery unit ensures seamless communication and energy distribution across the battery stack, making it an essential component for residential and commercial energy storage applications. With a 4.03kWh capacity and high-voltage operation, it provides reliable power management for various energy storage needs.

 

Key Features

  • Master Battery Unit – Required to manage and control a battery stack
  • Scalable to 28.21kWh – Supports up to 6 additional slave batteries
  • High Voltage & High Efficiency – Ensures stable and optimized energy performance
  • 90% Depth of Discharge – Maximizes usable energy output
  • Wide Temperature Tolerance – Designed for performance in various environments
  • Easy Installation – Compact, lightweight design for quick and simple setup
  • CAN/RS485 Communication – Enables seamless integration with inverters and monitoring systems

 

Technical Specifications

  • Nominal Energy: 4,050 Wh
  • 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
  • Weight: 38.25 kg
  • Battery Type: Lithium-Ion
  • Part No: FE-HV-ECM-4100

 

Applications

  • Residential Solar Storage – Stores excess solar energy for use during non-sunny periods or peak demand
  • Commercial Power Backup – Provides continuous power to essential equipment during outages
  • Off-Grid Systems – Supports complete energy independence with reliable solar battery storage


What’s Included in the Box?

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

 

Important Notes

  • This battery must be used in a stack with at least one slave module (minimum of two batteries required).
  • A maximum of seven modules can be stacked together (1 Master + 6 Slaves).
  • If adding battery modules to an existing stack, ensure compatibility with your original battery modules. Contact your technical support provider and upload a photo of your current battery stack via the portal 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 any malfunctions resulting from improper installation.

 

Why Choose the Fox ECS 4.03kWh HV Battery Master?

The Fox ECS 4.03kWh HV Battery Master is a powerful, scalable, and high-efficiency energy storage solution. Whether used for solar self-consumption, backup power, or off-grid applications, it delivers exceptional performance, longevity, and seamless system integration to maximize energy efficiency and reliability.

 

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: 86172395799

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lusCiousLoop
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★★★★★ 5
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Size: 16P, Color: colored
Good price and good quality of tennis balls
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Reviewed in the United States on May 6, 2026
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mikeholtsclaw
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★★★★★ 5
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Size: 16P, Color: colored
Exactly what i needed
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Reviewed in the United States on May 11, 2026
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Jill
Cuba, US
★★★★★ 1
Will not buy again
Size: 80P, Color: colored
We received the balls 5 days ago and so far our dog has destroyed a ball per day. At this rate, all the balls will be destroyed in 80 days. Not a good value for this product. We have other brand tennis balls that our dog has chewed on for months that have held up. We will not buy again.
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Reviewed in the United States on May 25, 2026
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bgllvr
Charlottesville, US
★★★★★ 5
Haven’t used them yet
Size: 80P, Color: colored
Haven’t used them yet but they appear to be good.
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Reviewed in the United States on May 17, 2026
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salllie
Waukegan, US
★★★★★ 4
good for light chewers
Size: 16P, Color: yellow
Decent number of balls for the price! Unfortunately, my dog obliterated half of the tennis balls within an hour, but I'm sure part of that is because he likes to carry more than one ball at a time and chew on them a little before dropping for someone to throw. Otherwise, they are super bright, making them easy to see in the dark or dark places. They have some bounce to them, which makes playing fetch a little more exciting. My dog loves balls, so he has no complaints other than they don't squeak.
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