Upgrade your existing Spark system.

A Gateway adds automatic backup switching, allowing your system to supply your home during a power cut. Available backup power depends on your inverter, battery charge and household demand.

Check the model on the inverter’s label, your original paperwork or the EcoFlow app. The inverter converts the energy from your panels and batteries; it isn’t a battery module. Please don’t remove any covers.

The 8 kWh battery stores 60% more than the 5 kWh model, giving you more energy to use later. It also needs about 10 cm more height per battery.

Both offer up to 10,000 cell charge cycles. Price comparisons use the advertised 5 kWh and 8 kWh capacities and include installation. Manufacturer’s warranty terms apply.

The battery is the same. The five-year extension increases EcoFlow’s warranty from 10 to 15 years for an extra £500 per 8 kWh battery.

Manufacturer’s eligibility, usage and warranty terms apply. EcoFlow warranty information ↗

The battery model determines how many modules can be added. If you have any original PowerOcean batteries, choose PowerOcean, even if some newer OCEAN 2 batteries are already installed.

You can check your original paperwork or the battery label. This is the battery model, which may differ from your inverter model.

Count the battery units only, not the inverter at the top. This Spark installation has two batteries underneath its inverter.

Each additional battery increases the height of your installation.

We’ll check your photos before confirming the work. If moving is needed but hasn’t been selected, we’ll discuss the additional cost with you before proceeding. We may need to cancel and refund an unsuitable order.

If you pay a deposit, the remaining 90% is due on completion. Spark will send a Sage invoice with a secure Stripe payment link. You don’t need to create an account.