EcoFlow DELTA 3 Classic
A 1,024 Wh LFP portable power station with 1,800 W of AC output, 45-minute fast charging and a 3+2-year warranty.
- Best for fast-charging backup
- Power station
- 1,024 Wh
- 3+2-year warranty
- Capacity: 1,024 Wh (about 1 kWh) with LFP cells. It cannot be expanded.
- Output: 1,800 W continuous, 3,600 W surge, and up to 2,400 W with X-Boost.
- Charges from the mains at 1,400 W (0-80% in 45 minutes) or from solar at up to 500 W.
Not tested by us
We have not tested the EcoFlow DELTA 3 Classic. The figures on this page come from the sources listed at the end of the page, checked on 10 November 2026, and we do not show prices. "Best for" is based on what the maker says the product is designed for, not on our own tests.
Key figures
1,024 Wh
Capacity
1,800 W
AC output (3,600 W surge)
45 min
0-80% charge from the mains
Specifications
Last checked on 10 November 2026. The grey text under each name explains what the value means.
| Specification | Value |
|---|---|
| Storage | |
| CapacityHow much energy the battery stores. Bigger means longer runtime or more of your own solar power used later. | 1,024 Wh |
| Battery chemistryLFP (lithium iron phosphate) cells are known for long life and stable behaviour with heat. | LFP |
| Cycle lifeHow many full charge and discharge cycles the cells are rated for before they hold less than the stated share of their original capacity. | EcoFlow states '10 years' on the page; the page gives no cycle count |
| ExpansionExtra battery units that add storage to the same system. | Not expandable: EcoFlow lists no extra battery port |
| Output | |
| AC output (continuous)The power it can deliver all the time. Add up the watts of what you want to run at once and stay below this. | 1,800 W, 230 V ~ 50 Hz, 2 outlets in the spec table (the comparison table on the same page says 5 outlets in total) |
| AC output (surge)A short burst above the continuous rating, for appliances that draw more power when they start. | 3,600 W |
| X-BoostA mode that can run some devices above the normal output rating by lowering the voltage it supplies. Not suitable for every device. | Runs devices up to 2,400 W |
| USB-APorts for phones, tablets and small devices. | 1 fast-charge port, 18 W |
| USB-CPorts for laptops, phones and tablets. Power delivery up to 100 W can charge most laptops. | 2 ports: 100 W and 30 W |
| Car outletA 12 V socket like the one in a car, for car accessories. | None |
| DC5521A small round DC connector used by routers, cameras and LED lights. | Not stated |
| Charging | |
| AC chargingHow fast it charges from a wall socket. Higher means a shorter wait. | 1,400 W |
| Time to charge from the mainsHow long a full charge takes from a wall socket. | 0-80% in 45 minutes in fast mode; 0-100% in 60 minutes |
| Solar inputHow much solar panel power it accepts. A higher figure fills the battery faster on a sunny day. | 500 W max. Voltage and current are not stated |
| Solar charging timeHow long a full charge takes from solar panels, in the conditions the maker names. | Fully charged in 2.5 hours with 500 W of solar input |
| Backup switchover (EPS)What happens when the grid fails. EPS means it takes over automatically. | UPS, 10 ms |
| Housing and warranty | |
| Dimensions (L × W × H)Check the space before you buy, including room around it for airflow and cables. | 398 × 200 × 283 mm |
| WeightMatters for lifting, wall mounting and moving it. | 12.1 kg ± 0.3 kg |
| Operating temperatureThe range it is rated to work in. Cold and heat can reduce performance. | Discharging -10 to 45 °C; charging 0 to 45 °C |
| Noise levelFan noise while working. | Under 30 dB at 600 W, under 40 dB at 200 W, 50 dB at maximum |
| WarrantyThe period the maker covers. Read the terms: conditions and capacity guarantees differ. | 3+2 years |
How long will it run your devices?
Choose how many of each device you want to run at the same time. The wattages are typical figures, so check the label on your own devices.
| Device | Typical power | How many |
|---|---|---|
| 10 W | ||
| 10 W | ||
| 15 W | ||
| 60 W | ||
| 80 W | ||
| 80 W | ||
| 40 W | ||
| 1,000 W | ||
| 2,000 W | ||
| 1,000 W | ||
| W |
The estimate assumes 85% of the rated capacity is usable after conversion losses. EcoFlow does not state this figure, so we use a cautious assumption. Real running times vary with temperature, battery age and how each device draws power.
Compatible with
What EcoFlow says this product works with. Anything not listed here is not confirmed.
- Extra batteries
- Not compatible: Not compatible: EcoFlow lists the DELTA 3 Classic as not expandable.
- Solar panels
- Solar input up to 500 W. The page does not list panel models or the input voltage range.
- App
- The EcoFlow app, over Wi-Fi or Bluetooth.
Rules where you live
A portable power station is not wired into your home, so it is simple to use almost anywhere. Connecting one to your home circuits to power the house is different, and the rules for that vary by country. See our country guides for the rules, incentives and prices where you live.
Strengths and things to check
Strengths
- Fast mains charging: 0-80% in 45 minutes (EcoFlow's figure)
- 1,800 W continuous output with a 3,600 W surge
- 10 ms UPS switchover
- Quiet at moderate loads: under 30 dB at 600 W (EcoFlow's figure)
Worth checking before you buy
- Cannot be expanded beyond 1,024 Wh
- No car outlet
- At the full 1,800 W it runs for well under an hour
- Not a home battery: do not connect it to your home circuits in a way that lets it feed the house
- The EcoFlow UK page was sold out when we read it, and it contradicts itself on the number of AC outlets
Change log
We record changes to this page here, so you can see when figures such as the warranty were last updated.
- 10 November 2026
- Page published. Warranty at publication: 3+2 years (EcoFlow UK product page, which showed the product as sold out).
Where this information comes from
We have not tested the DELTA 3 Classic. Every figure above comes from EcoFlow's UK product page, last checked on 10 November 2026. A value that the page does not state is shown as not stated. The DELTA 3 Classic is a different product from the DELTA 3 Plus and other DELTA 3 models, which have other specifications.
We do not show prices, because they change often and differ between sellers.
- Manufacturer EcoFlow UK DELTA 3 Classic page
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Common questions about EcoFlow DELTA 3 Classic
Can the DELTA 3 Classic run a fridge?
Most fridges draw well under 1,800 W, so the output is rarely the limit; capacity is. Divide 1,024 Wh by the fridge's average draw for a rough running time, which will be lower in practice because of conversion losses.
Can the DELTA 3 Classic be expanded?
No. EcoFlow's UK page says the unit is not expandable and has no extra battery port.
Is the DELTA 3 Classic the same as a home battery?
No. It is a portable power station that you plug devices into. An installed home battery is wired into your electrics by an electrician. See our guide to plug-in and installed home batteries.
Related guides
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