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-L5.3 Storage Systems - Hybrid Inverter

Sunsynk L5.3 Data Sheet

Sunsynk L5.3 Manual

Sunsynk collection page for further information and documents

Sunsynk ECCO Hybrid Inverters with L5.3 LiFePO4 Battery

The Sunsynk ECCO hybrid inverter provides intelligent energy management, enabling you to buy electricity at low rates and sell back to the national grid via SEG payments, thanks to its API integration with Octopus Agile, Flux, and Go. Paired with the Sunsynk L5.3 LiFePO4 battery, this system delivers up to 5.32kWh of energy storage per unit, scalable up to 170kWh with up to 32 batteries, making it ideal for both residential and commercial solar systems.

The L5.3 battery is IP65-rated, suitable for indoor or outdoor installation, and provides over 6,000 charge cycles, ensuring reliable performance for years. Cables for battery-to-inverter and battery-to-battery connections are included for seamless installation.

Sunsynk L5.3 Battery Features

• Advanced LiFePO4 cell technology for durability and efficiency

• Can be wall-mounted indoors or outdoors

• 90% recommended depth of discharge for maximum usable energy

• Over 6,000 charge cycles for long-lasting performance

• IP65-rated for reliable outdoor operation

• Warranty: 10 years with a Sunsynk inverter (5 years without)

• Scalable system – connect up to 32 units for 170.24kWh total storage

L5.3 Battery Specifications

• Battery Chemistry: LiFePO4

• Capacity: 104Ah

• Nominal Voltage: 51.2V

• Energy: 5.32kWh per battery

• Recommended Depth of Discharge: 90%

• Dimensions: 440 x 620 x 135 mm (W x H x D)

• Weight: 46kg

• Communication: CAN2.0, RS485

Sunsynk App – Real-Time Control

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

• Remote management – change all inverter settings from anywhere with an internet connection

• Complete inverter control – access features unavailable via the control panel, including system updates/upgrades

• Live monitoring – track energy usage, adjust load management, and optimise savings

• Custom reporting and graphs – monitor system performance and identify opportunities to save

Smart Energy Management with Octopus Agile & Flux

• Integrated with Octopus Agile, Flux & Go for dynamic energy pricing

• Charge at the cheapest rates and automatically discharge when electricity prices rise

• Optimises self-consumption of solar energy while reducing reliance on the grid

• Real-time monitoring ensures maximum efficiency and savings

Why Choose Sunsynk ECCO with L5.3 Battery?

• Flexible hybrid charging from solar panels and the electrical grid

• Expandable and modular – scale your system as your energy needs grow

• Durable and weather-resistant for indoor or outdoor installation

• Smart app integration – full control, monitoring, and reporting from anywhere

• Future-proof investment – LiFePO4 battery technology with long life cycles and UK-ready performance