Solar Battery Storage - EcoFlow UK

Solar Battery Storage

Solar Battery Storage

Solar battery storage captures solar energy from solar panels for later use, turning sunlight into reliable power. EcoFlow's LiFePO4 battery systems safely deliver 1-90kWh capacity for unmatched durability and security. Select On-Grid for whole-home backup and electricity bill reduction, or choose Off-Grid systems for adventure-ready power anytime - all with smart energy optimization to keep you powered efficiently.

Off Grid

On Grid

New
1-5kWh Capacity
1800W Output
Regular price from £649.00
Sale price from £649.00
Regular price £799.00
Unit price
per 
- Expandable 1-5 kWh capacity with DELTA 3 Extra Battery, DELTA Pro 3 Extra Battery, DELTA 2 Extra Battery, or DELTA 2 Max Extra Battery. - 1800W AC output, with 2400W (3600W surge) using X-Boost ...
1kWh | 5-year Warranty
Regular price from £549.00
Sale price from £549.00
Regular price £549.00
Unit price
per 
- Increase the capacity of DELTA 3 Plus/DELTA 3 with an extra 1024Wh. - Get 10 years of daily use until it hits 80% of its original capacity. Embrace 4000+ charging cycles enabled by the LFP batte...
New
4kWh capacity
Regular price from £2,199.00
Sale price from £2,199.00
Regular price £2,199.00
Unit price
per 
Compatibility - Works seamlessly with EcoFlow DELTA Pro 3  (The EcoFlow DELTA Pro Smart Extra Battery is compatible with the EcoFlow DELTA Pro 3. ). Scalable Power - Expandable up to 12kWh for inc...
Regular price £549.00
Sale price £549.00
Regular price £549.00
Unit price
per 
• Expandable Capacity • Convenient Recharging • Fast Recharging • Internal Storage Compartment • Power multiple devices • Control from anywhere
New
Regular price £999.00
Sale price £999.00
Regular price £999.00
Unit price
per 
• Expandable capacity - Increase the capacity of DELTA 2 Max with an extra 2046Wh. • Triple the power - 2-6kWh expandable capacity to fit your energy storage needs. Add up to two DELTA 2 Max Smart ...
Regular price £1,799.00
Sale price £1,799.00
Regular price £1,799.00
Unit price
per 
This item is no longer for sale on EcoFlow official website. We recommend you to check out DELTA Pro 3 Smart Extra Battery and other promotional items. • Extra 3600Wh battery for DELTA Pro • Exp...
Regular price from £1,548.00
Sale price from £1,548.00
Regular price £2,048.00
Unit price
per 
2kWh LFP Battery: • Built-in auto heating to use in as low as -4°F • Stackable and expandable up to 6kWh • Hot-swap enabled for safety protection • Advanced BMS for battery protection and smart con...
Regular price from £399.00
Sale price from £399.00
Regular price £549.00
Unit price
per 
• Expandable Capacity • Convenient Recharging • Fast Recharging • Internal Storage Compartment • Power multiple devices • Control from anywhere
Regular price from £899.00
Sale price from £899.00
Regular price £1,099.00
Unit price
per 
• Expandable capacity - Increase the capacity of DELTA 2 Max with an extra 2046Wh. • Triple the power - 2-6kWh expandable capacity to fit your energy storage needs. Add up to two DELTA 2 Max Smart ...
1kWh | 5-year Warranty
Regular price from £479.00
Sale price from £479.00
Regular price £549.00
Unit price
per 
- Increase the capacity of DELTA 3 Plus/DELTA 3 with an extra 1024Wh. - Get 10 years of daily use until it hits 80% of its original capacity. Embrace 4000+ charging cycles enabled by the LFP batte...
PowerOcean (1-phase)

PowerOcean (1-phase)

For homeowners with energy needs for the entire household

Energy supply
1-phase system

Output power
3 to 6 kW

Storage/backup capacity
5 to 15 kWh

PowerOcean (3-phase)

PowerOcean (3-phase)

For homeowners with energy needs for the entire household

Energy supply
3-phase system

Output power
6 to 12 kW

Storage/backup capacity
5 to 45 kWh

PowerOcean Plus(3-phase)

PowerOcean Plus(3-phase)

For homeowners with high energy needs

Energy supply
3-phase system

Output power
15 to 29.9 kW

Storage/backup capacity
5 to 60 kWh

Accessories

Smart Home Energy Ecosystem

PowerPulse 2

PowerPulse 2

Solar EV Charger

Power Heat

Power Heat

Air-to-Water Heat Pump

PowerGlow

PowerGlow

Smart Heating Element

PowerInsight

PowerInsight

Home Energy Monitor

Accessories

DELTA 3 Series
Panels
2kWh Capacity | 1800W Output
Regular price from £1,198.00
Sale price from £1,198.00
Regular price £1,348.00
Unit price
per 
 • Increase the capacity of DELTA 3 Plus/DELTA 3 with an extra 1024Wh.  • Get 10 years of daily use until it hits 80% of its original capacity. Embrace 4000+ charging cycles enabled by the LFP ...
1-5kWh Capacity Fully charged in 3.1 hr
Regular price from £798.00
Sale price from £798.00
Regular price £948.00
Unit price
per 
The solar to XT60i charging cable is not included in this bundle.  Click here to get a solar to XT60i charging cable. • Expandable capacity: 1-5kWh expandable capacity to fit your energy ...
New
1-5kWh Capacity
Fully charge in 1.3 hr
Regular price from £998.00
Sale price from £998.00
Regular price £1,248.00
Unit price
per 
Expandable capacity: 1-5kWh expandable capacity to fit your energy storage needs. Ideal for home use, RVing, outdoors or even everyday use. Built to last 6× longer: Get 10 years of daily use unti...
1-5kWh Capacity | Fully charged in 1.4 hr
Regular price from £1,198.00
Sale price from £1,198.00
Regular price £1,648.00
Unit price
per 
Expandable capacity: 1-5kWh expandable capacity to fit your energy storage needs. Ideal for home use, RVing, outdoors or even everyday use. Huge AC output: With X-Boost mode get up to 2400W outpu...
22.6% Conversion Rate
IP68
Regular price £549.00
Sale price £549.00
Regular price £849.00
Unit price
per 
High-Capacity Backup: Supports home backup, off-grid cabins, and high-demand outdoor appliances with ease. Single Panel, Big Power: One 400W panel provides enough energy for short-term charging...
23% Conversion Rate
IP68
Regular price £299.00
Sale price £299.00
Regular price £299.00
Unit price
per 
• A 23% conversion rate to sunlight • All-black design that fits any house style • Built to last with an IP68 waterproof rating • Fast and Easy Installation • Up to a 10-year warranty* The sola...
23% Conversion Rate
IP68
Regular price £109.00
Sale price £109.00
Regular price £139.00
Unit price
per 
• Weighs only 5.1lbs, making it extremely lightweight • 258° flexibility, making it easy to fit to any surface • An IP68 waterproof rating for added durability • Universally compatible Learn m...
23% Conversion Rate
IP68
Regular price £139.00
Sale price £139.00
Regular price £159.00
Unit price
per 
• A 23% conversion rate to sunlight • All-black design that fits any house style • Built to last with an IP68 waterproof rating • Fast and Easy Installation • Up to a 5-year warranty Learn mo...
22.6% Conversion Rate
IP68
Regular price £549.00
Sale price £549.00
Regular price £849.00
Unit price
per 
High-Capacity Backup: Supports home backup, off-grid cabins, and high-demand outdoor appliances with ease. Single Panel, Big Power: One 400W panel provides enough energy for short-term charging...

What is solar battery?

A solar battery is an energy storage device that collects the electricity generated by the solar panels and stores it for later use. It is a core component of photovoltaic systems and allows you to use this energy at any time, regardless of solar radiation, especially at night or on cloudy days.

Learn More

How do solar batteries work?

Solar batteries store the excess energy generated by the solar panels as chemical energy and release it when needed as electricity.

Ask for Help

FAQs on Solar Battery Storage

What size solar battery do I need?

The size of your solar battery will depend on your energy needs and the level of independence you desire. To find out what size you need, add up your daily energy consumption in watts per hour (Wh) and multiply it by the number of days the solar battery should last without recharging. Pay attention to the rate of discharge (which can be as high as 90% for lithium batteries). Formula: Battery capacity (Ah) = energy consumption (Wh) / battery voltage (V).

How long do solar batteries last?

The lifetime of solar batteries depends on the technology used: The EcoFlow solar lithium batteries use LFP technology and manage between 3000 and 6000 charging cycles without any loss of their capacity. After that, it will only be reduced to 80%. The lifetime of a solar battery depends on the charging cycles, the depth of discharge and the temperature conditions.

How much are solar batteries?

Depending on their capacity, compact units solar battery for off grid use carry accessible entry pricing(between 800 and 1200 euros), while home solar battery systems reflect extended capacity and backup duration.

Is it safe to put solar batteries inside the house?

Yes, if installed properly. EcoFlow X-Guard technology makes their solar batteries waterproof, fireproof and fall-proof. Furthermore, they are ultra-quiet with a background noise level of 30dB, which will not affect your sleep or that of your loved ones. For home power storage battery, PowerOcean is engineered with cutting-edge fire-resistant technology to prevent and suppress potential fire hazards, ensuring the safety of users and protecting property from battery-related incidents.

How many solar panel batteries are needed to power a house?

Powering a typical UK home requires solar panel battery storage capacity matching your daily usage and backup goals. For essential overnight coverage, a single high-capacity unit like Delta Pro suffices, while 24/7 whole-home operation typically needs 2-3 batteries. Larger homes or EV charging scenarios benefit from PowerOcean modular expandability up to 90kWh. Precise sizing depends on your historical consumption, critical appliances, and outage resilience needs – use our Power Planner for customized calculations in under a minute.

Are solar batteries worth it?

Yes, because they allow you to store solar energy for later use, increasing your independence from the electric grid. They are particularly advantageous in areas with an unstable electricity supply or in off-grid systems. In addition, you can also use your solar batteries during road trips and outdoor activities. The versatility of these solutions is one of their greatest strengths.

How to connect solar panels to battery?

First, connect the solar battery to the solar charge controller. Then connect the solar panels to the solar charge controller. Finally, connect the inverter.

Can a 12v solar panel charge a 24v battery?

Not directly. It can be done in two ways: By connecting a charge controller to it with a boost converter that increases the voltage, or by using two 12V solar panels connected in series to increase the voltage to 24V.

What size solar panel to charge 12v battery?

The solar panel must exceed the battery's nominal voltage (12V). Ideally, we would need a 18V or higher solar panel to compensate for the power losses.

Can I charge a lithium battery with a solar charger?

Yes, as long as the solar charger supports lithium technology and can provide the right charging features (e.g. constant current/constant voltage mode). Many modern MPPT or PWM charge controllers support lithium batteries.

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