To view our full range of installed battery storage packages visit our collection page here

To request a bespoke quote please complete our quotes form

Nationwide Solar & Battery Installations Across the UK

We provide professional solar and battery storage installations nationwide across most areas of the UK. Every system is fully certified and installed by qualified engineers, giving you peace of mind and long-term reliability.

Pricing and Deposit Information

• A £750 refundable deposit is required to begin the installation process and, where necessary, to submit your DNO (Distribution Network Operator) application.
• The balance payment is due before delivery of the system. (Please note: any date shown at checkout is only an estimate.)
• The listed price includes:
• Full installation
• DNO application submission
• MCS certification
• 2-year workmanship warranty
• Delivery of all components

In some cases, a new sub-board or RCD board may be required. If so, this will be quoted separately or charged on the day if installers need to purchase upgrade parts.

Optional Backup Power Upgrades

For properties in remote UK locations or where backup power is required, additional electrical components can be installed:

• Full house backup – With either automatic switchover or manual switchover, depending on system size and capacity.
• Critical load backup – Using the EPS output and a second consumer unit to supply essential circuits only (e.g. lighting, refrigeration, Wi-Fi, medical equipment).

Backup upgrade options are available on our installed packages page here. These can be added to your order after your deposit is paid, with payment only due once components are ready for installation.

Steps to Proceed After Deposit Payment

To move forward with your installation, please provide:

6.                  Your MPAN number (found on your electricity bill).

7.                  Photos of the proposed installation space for the battery system, with a brief description of the location.

8.                  Photos of your consumer unit, along with a description of its position relative to the battery system location.

9.                  Photos of your existing solar inverter setup (if applicable).

#5: INSTALLED-SUN-W5.3 Storage Systems - Hybrid Inverter

Sunsynk W5.3 Data Sheet

Sunsynk W5.3 Manual

Sunsynk ECCO Hybrid Inverters with W5.3 LiFePO4 Battery

The Sunsynk ECCO Hybrid Inverter is a smart energy solution that allows you to buy electricity at cheap rates and sell back to the grid through SEG payments, thanks to its API integration with Octopus Agile, Flux, and Go. Paired with the Sunsynk W5.3 battery, available in 5.32kWh and 10.64kWh capacities, this system delivers reliable, efficient, and flexible energy storage for UK homes and businesses.

The W5.3 battery uses advanced LiFePO4 technology for superior durability, operating in extreme temperatures from -20°C to -10°C, and includes a built-in 125A MCB for enhanced safety.

Sunsynk W5.3 Battery Features

• LiFePO4 chemistry for long life and stable performance

• Charges at -10°C, discharges at -20°C

• Integral 125A double-pole MCB for protection and reliability

• IP65-rated – suitable for outdoor installation

• Scalable up to 32 batteries in parallel for larger energy storage needs

• 90% Depth of Discharge (DoD) for maximum usable energy

• Optional cell-level monitoring

• Can be wall or rack-mounted

• Available in white or black

Sunsynk App – Full Control at Your Fingertips

• Real-time push notifications – instant alerts for power cuts, generator or battery use

• Remote settings adjustment – manage your hybrid inverter from anywhere with an internet connection

• Complete inverter control – access advanced features like system updates and upgrades

• Live stats and monitoring – track energy usage, identify peaks, and optimise savings

• Custom reporting and graphs – generate reports to understand system performance and cost savings

Smart Energy Management with Octopus Agile & Flux

• Integrated with Octopus Agile, Flux & Go, allowing you to charge your battery at the cheapest rates

• Automated discharge at higher electricity rates to maximise savings

• Enables efficient self-consumption of solar energy and reduced reliance on the grid

• Supports real-time monitoring and optimisation through the Sunsynk data logger platform

Why Choose Sunsynk ECCO with W5.3 Battery?

• Flexible hybrid energy management – charge from solar or the grid and sell back to the national grid

• Reliable, durable battery storage suitable for indoor or outdoor installation

• Scalable and modular – expand your system as energy needs grow

• Smart app integration – full control and monitoring for maximum efficiency and savings

• Future-proof investment – advanced LiFePO4 battery technology and UK-ready energy solutions