SKU: 44981373286

Fox ECS 2.88kWh HV Battery Slave V1 Connector B

Sale price$406.92 Regular price$452.13
Save 10%

Pay in installments of $113.03 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 21 - Sep 26

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Fox ECS 2.88kWh HV Battery Slave V1 Connector BFox ECS 2. 88kWh HV Battery Slave V1 Connector B The Fox ECS 2. 88kWh HV Battery Slave V1 (Connector B) is a high performance lithium ion battery designed to enhance the energy storage capacity of Fox ESS Energy Cube systems. With a nominal energy of 2,880Wh, this modular battery provides exceptional performance and flexibility for residential and commercial solar power systems. It offers reliable power and high discharge rates, making it a solid

Fox ECS 2.88kWh HV Battery Slave V1 – Connector B

 

The Fox ECS 2.88kWh HV Battery Slave V1 (Connector B) is a high-performance lithium-ion battery designed to enhance the energy storage capacity of Fox ESS Energy Cube systems. With a nominal energy of 2,880Wh, this modular battery provides exceptional performance and flexibility for residential and commercial solar power systems. It offers reliable power and high discharge rates, making it a solid choice for those seeking increased energy independence or backup storage solutions.

 

Key Features

  • Scalable Design – Perfect for stacking multiple modules to expand energy storage capacity
  • Lithium-Ion Technology – Ensures long-lasting and efficient power storage
  • High Depth of Discharge (90%) – Maximizes the usable energy from the battery
  • Reliable Discharge and Charge Rates – Supports high surge discharge power up to 3,000W
  • Modular Expansion – Integrates seamlessly into Fox ESS Energy Cube systems for customized storage needs

 

Technical Specifications

  • Nominal Energy: 2,880 Wh
  • Depth of Discharge: 90%
  • Voltage: 52 V
  • Continuous Discharge Rate (Normal Use): 1,440 W
  • Maximum Discharge Rate (5 Minutes): 2,880 W
  • Surge Discharge Rate (15 Seconds): 3,000 W
  • Maximum Charge Rate (5 Minutes): 2,880 W
  • Supplier Part No: CS2900V1
  • Weight: 38 kg
  • Battery Type: Lithium-Ion

 

Applications

  • Residential Solar Storage – Store excess solar energy to use during non-sunny periods or peak electricity demand times
  • Commercial Power Backup – Provides continuous energy to keep essential equipment running during grid outages
  • Off-Grid Systems – Enables complete energy independence with reliable solar storage

 

What’s Inside the Box?

  • Fox ECS 2.88kWh HV Battery Slave V1 – Connector B
  • User Manual
  • Installation Guide

 

Important Notes

  • This battery module is part of a modular system, and at least 2 modules are required for proper operation (1 Master + 1 Slave).
  • A maximum of 7 modules can be connected in a single stack (1x Master + 6x Slaves).
  • If adding new battery modules to a pre-existing Energy Cube stack, please ensure compatibility with your original battery modules. For assistance, contact your technical representative via the portal and provide a photograph of your current battery stack for compatibility verification.
  • Connector Type: This is the Version 1 (Connector B) variant. When expanding your system, ensure that the new modules have the same connector type.
  • Installation Requirement: The Fox ECS 2.88kWh HV Battery Slave V1 must be installed by a qualified electrician in accordance with local wiring standards and safety regulations. Incorrect installation may cause system issues, and Solareon UK is not responsible for any malfunctions arising from improper installation.

 

The Fox ECS 2.88kWh HV Battery Slave V1 – Connector B is a flexible and scalable solution for enhancing the capacity of your solar energy storage system. With its long-lasting lithium-ion battery technology, it’s an excellent choice for those seeking to optimize solar energy use and ensure reliable backup power.

 

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: 44981373286

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 5 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
W
Verified Purchase
Wesley
Lake Worth, US
★★★★★ 5
Quality No Show Socks That Are Comfortable and Durable
Size: Large, Color: (100) White / White / Black
These Under Armour no show socks are great for everyday training and casual wear. The cotton blend feels comfortable and they stay in place throughout the day. Getting six pairs in a pack is solid value for a quality brand. They hold up well after multiple washes and the no show style works great with most athletic shoes. A reliable go-to sock.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
H
Verified Purchase
Hanson
San Leandro, US
★★★★★ 5
Comfortable
Size: Large, Color: (001) Black / Black / White
I recently picked up a pair of Under Armour socks, and they’ve quickly become my go-to choice for daily wear and workouts. From the first wear, the fit felt snug and supportive without being too tight. The fabric is lightweight yet durable, and it does a great job wicking sweat — keeping my feet dry even during longer runs or intense gym sessions. One of the things I appreciate most is the arch support and cushioning in the right places. It adds just enough padding where I need it, especially under the ball and heel of the foot, which makes a noticeable difference on days when I’m on my feet a lot. The socks also have a nice breathable mesh pattern that improves airflow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026
J
Verified Purchase
Joey Espinoza
New York, US
★★★★★ 5
Perfect for my needs
Color: Dark Gray, Size: 3 Panel "L"
This works well if you need a little privacy or designated space. I recently moved my office out to the garage at I wanted something sturdy that would block my desk etc when the garage is open. Works great for my needs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 21, 2025
Y
Verified Purchase
14 year SICU/CCU staff nurse
Charlottesville, US
★★★★★ 5
Good purchase
Color: Dark Gray, Size: 2 Panel "I", Color: Dark Gray, Size: 2 Panel "I"
Works well to divide up space. Assembly was not as simple but doable !!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 1, 2024
H
Verified Purchase
Honey
Natrona Heights, US
★★★★★ 5
Great Room Divider
Color: Dark Gray, Size: 2 Panel "I", Color: Dark Gray, Size: 2 Panel "I"
I wanted to create a guest room. This room divider does the job perfectly without breaking the bank. It is sturdy and stand alone without bending. Thank you VIVO!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2024

recommand products