Fox ECS SeriesFox ECS Series

Fresh Solar Installed Retrofit Battery

Item #486369

Shipping Included

 - 2 x 2.9kW batteries (total 5.8kW)

- Optimised Energy Storage

- Sleek and Space-Saving Design

- Intelligent Energy Management

- Weather-Resistant Durability

- Environmentally Conscious


Certain locations may attract a grid application/connection offer to allow their system to be connected to the grid. This charge will need to be covered by the customer. This will be confirmed at point of booking the installation.

Your estimated delivery time will be 14 business days (excluding weekends and bank holidays) from the time of order. Postcode Restrictions may apply. Find out more in the Delivery & Returns Tab below.

Your estimated delivery time will be 10 business days (excluding weekends and bank holidays from completion of site survey. Postcode Restrictions may apply. Find out more in the Delivery & Returns Tab below.

Your credit/debit card will be charged when your order is placed on this item.


The images shown are for illustration purposes only and may not be an exact representation of the product

The Fox Cube Solar Battery is a revolutionary addition for UK homeowners with solar panels. This retrofit solar battery system is efficient, reliable, and eco-friendly, helping households to get the most from their solar PV system.

Key Features:

Optimised Energy Storage: The Fox Cube Solar Battery maximises solar energy utilisation by storing surplus power generated during the day. This energy reservoir ensures continuous access to clean, renewable energy, even during low or no sunlight periods.

Sleek and Space-Saving Design: Compact and intelligently designed, the Fox Cube seamlessly integrates into existing solar setups. Its space-saving design makes it an ideal choice for homeowners seeking to upgrade their sustainability without compromising on aesthetics.

Intelligent Energy Management: Take control of your energy consumption with the user-friendly monitoring system. Track real-time energy production and consumption patterns through a convenient mobile app, allowing for efficient energy optimisation and cost savings.

Weather-Resistant Durability: Engineered to withstand the variable UK weather, the Fox Cube is built to last. Its durable construction ensures consistent performance, rain or shine.

Environmentally Conscious: Reduce your carbon footprint and contribute to a cleaner environment by harnessing solar power. Embrace sustainability without compromising on comfort or convenience.



Energy Self-Sufficiency: Store solar energy generated during the day to use at night time.


Cost-Efficiency: Lower energy bills by utilising free, renewable solar energy when you need it most.


Environmental Impact: Reduce reliance on non-renewable energy sources, positively impacting the environment.


Enhanced Home Value: Invest in a greener future while increasing your property's value.


Installation and Support:

Installing the Fox Cube Solar Battery is hassle-free, designed to seamlessly integrate with various solar panel systems. Our team of experts ensures a smooth installation process, and comprehensive support is available to address any inquiries or concerns.

The contract will only be concluded after the survey has been completed and the member confirms they wish to proceed by signing the contract with Fresh Electrical. The contract for supply and installation of the solar panels is with Fresh Electrical, not Costco. Costco will take the payment from the member and the full funds will be held in a ‘ring-fenced’ account until a job completion form is signed by the member. Costco will only receive a commission paid by Fresh Electrical Solar.

Fresh ElectricalFresh Electrical 

BrandFresh Electrical Solutions Ltd


  • This is an installation item including delivery of the itemAdditional day(s) transit may be required for remote areas.
  • Public and Regional holidays may affect delivery lead times.
  • Delivery times may vary in the event of adverse weather conditions.
  • Please note that we are unable to ship to the Channel Islands, Post Office boxes and BFPO.
  • Further postcode restrictions might apply to this item.
  • We are committed to offering the best value to our members, with a satisfaction guarantee on both your membership and merchandise. If you have questions about your membership or products you've purchased at Costco, please contact our Customer Care team.
  • Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However your legal rights are unaffected. If you are a consumer, these rights may include a right to return the merchandise for a refund, or to obtain a replacement or a price deduction, if the merchandise is not of satisfactory quality and as described, or if it does not match any sample provided. Your specific rights will depend on the time since you bought the merchandise and the specific nature of the problem. If you are a trader, you may have a claim for damages in these circumstances.
  • Find out more about our Delivery, Cancellations and Assistance Policy
Compare up to 4 Products

You can only compare up to 4 products at once. Remove one or more products before adding another to compare.