• 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 technology.
• 5 fast recharging methods: AC, Solar, 800W Alternator Charger, Smart • Generator 3000 (Dual Fuel), and Multi-charging.
• 5-year warranty.
Powerful output, imperceptible operation.
1800W output, 3600W surge beyond limits
EcoFlow DELTA 3 Series supports 99% of household devices, including refrigerators, TVs, and computers. Plus, with X-Boost, continuously power appliances over 2400W, such as ovens (2150W), hair dryers (1800-2500W), and kettles (1200-3000W). Perfect for home usage, RV, and outdoor usage, this solar battery ensures you're never left in the dark.
Compact and portable design fits effortlessly in any space
Effortless to use, convenient to transport
Integrates 11 outlets in a compact design
DELTA 3 Series handles more appliances simultaneously even in cramped spaces.
Space-saving design, ideal for travel
5% smaller than EcoFlow DELTA 2, and about the size of a small microwave oven. Place in the trunk, front passenger seat, or back seat without taking up too much space. It's lightweight too, weighing as little as the average adult corgi.
30 dB ultra-quiet operation
Completely imperceptible under 600W, blending with natural ambient noise (30 dB).
Whether you're in a tent or at home, it won't disrupt sleep.
Peace of mind for backup power, convenient for daily use
An intelligent energy management system powered by EcoFlow Oasis
Customise
TOU (Time of Use) modes optimise electricity usage for daily bill savings. DELTA 3 Plus can automatically manage charging and discharging during peak and off-peak hours to save on energy costs in TOU mode.
Storm warning mode and UPS power outage reminders swiftly activate backup power for essential appliances during emergencies.
Monitor
Real-time energy insights on the go. View battery status live anytime, anywhere.
Control
Control even from afar. Easily turn on/off output and the connected appliances remotely.
Constant Updates
Constant updates for optimal user experience. Regular upgrades offer you industry-leading energy management.
Ensure reliable backup for specialized equipment with a 10 ms UPS.
Switchover is under 10 ms when the grid is down, allowing desktop computers, laptops, NAS servers, and 3D printers to instantly switch to battery supply, ensuring uninterrupted operation during a power outage.
Long-lasting and durable, ensuring reliable backup now and always.
Triple protection from the inside out for guaranteed safety
LFP Battery
Third-gen LiFePO4 (LFP) cells offer fast charging without sacrificing longevity. With 4000 cycles to 80% capacity, enjoy up to 10 years of reliable use, 25% above the industry standard.
IP65 Battery Pack
IP65-rated for resistance against water splashes and dust, ensuring durability in various environments. Protects against harsh conditions, providing long-lasting performance.
BMS
Over 40 protective measures against current, voltage, temperature, and circuit risks. Intelligent management system and thermal runaway propagation protection prevent explosions and fires for maximum safety.
Flexible expansion for ultra long runtime.
Conveniently expandable up to 5kWh*.
*EcoFlow DELTA 3 Series are compatible with Extra Battery of DELTA 3, DELTA Pro 3, DELTA 2 Max, DELTA 2.
Smaller Size, Same Power
Same power, more compact. Achieve 2kWh capacity with EcoFlow DELTA 3 Extra Battery (1kWh), making it 1/3 smaller and lighter than the DELTA 2 power pack.
1 Extra Battery, 5x the Power
When combined with the EcoFlow Ecosystem, it can be equipped with DELTA Pro 3 Extra Battery, allowing for a maximum expansion to 5kWh, which extends the backup power duration by 5 times.
What's in the box
• EcoFlow DELTA 3
• AC Charging Cable
• Car Charging Cable
• DC5521 to DC5525 Cable
• Manuals & Warranty Card
Specs - DELTA 3 Plus
• Colour/ID: DELTA 3 - Silver & Grey
• Capacity: 1024Wh
• Net Weight: ≤12.5 kg
• Dimensions: 398×200×284 mm
• D3 EB Dimensions: 398×200×198 mm
• App: Supported (TOU/Storm warning)
• Extra Battery: Expandable capacity to 5kWh
DELTA 2 Max/DELTA 2/DELTA Pro 3/DELTA 3 Extra Battery Supported
• Total Output Ports: 11
• AC × 4: 4 × 1800W (Surge 3600W)
• Max Device(s) Power Supported by X-Boost: 2400W
• USB-A × 2 (Fast charging): DELTA 3 - 2 × 18W Max
• USB-A × 2: /
• USB-C × 2: DELTA 3 - 2 × 100W Max
• Car Power × 1: 12.6V, 10A, 126W Max
• DC5521 × 2: 2 × 12.6V, 3A Max
• AC: 1500W (56 Min)
• Solar: DELTA 3 - DC input 11V-60V1 × 500W Max (130 Min)
• Smart Generator: 1500W (56 Min)
• Car: 800W (1.3 Hr)
• AC+PV: 1500W (56 Min)
• Chemistry: LFP
• Cycle Life: DELTA 3 - 4000 Cycles to 80% Capacity
• Waterproof level of battery pack: IP65
• UPS: DELTA 3 - <10 ms
• Volume: 600W <30 dB
1200W <40 dB
• Warranty: 5 Years
Fabric Composition
Plastic 25%, Lfp 75%
Product Safety
This product is subject to specific safety warnings.
Batteries Included - CE marked and WEEE compliant.
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UK Deliveries
UK Mainland
FREE Standard Delivery within 3-5 working days on orders over £44.95
£4.95 Standard Delivery within 3-5 working days on orders under £44.95
FREE Express Delivery within 2-3 working days on orders over £44.95
£4.95 Express Delivery within 2-3 working days on orders under £44.95
No delivery to Scottish Highlands, Northern Ireland, Isle of Man, Isle of Wight and Isles of Scilly
Orders are sent via APC Overnight (gas), DPD, Royal Mail, DX Freight, Tuffnells
UK Return & Refund Policy
Orders can be returned within 60 days of receipt
The products must be in their original packaging, with all tags and in original condition
Returns are free
For faulty or damaged items, please contact Mountain warehouse Customer Service team
Return method:
To return your order, contact Mountain Warehouse Customer Care and receive your freepost return label.
Fill out the return slip, and make sure to include it inside the package you're returning. You can download the return slip here.
Please safely pack your items in secure, protective packaging to ensure they arrive undamaged.
Please retain proof of postage until it has been confirmed that your refund has been processed.
Please note that items sold by Ocean Trail cannot be returned to Mountain Warehouse stores
Return address:
Ocean Trail
Avensys House
Fleming Way
Crawley
RH10 9JY
For more information or help, please contact Mountain Warehouse's Customer Care.
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