EcoFlow DELTA Pro
The original 3,600 Wh LFP power station with 3,600 W output and expansion with two extra batteries. EcoFlow no longer sells it and points to the DELTA Pro 3.
- Best for whole-home backup
- Power station
- 3,600 Wh
- No longer sold
- Made by EcoFlow.
- Capacity: 3,600 Wh with LFP cells, expandable with up to two Smart Extra Batteries.
- Output: 3,600 W, 7,200 W surge, and up to 4,500 W with X-Boost.
- Charges from the mains in about 1.9 hours (2,875 W, EU/UK model) and takes up to 1,600 W of solar.
- Status: EcoFlow's UK page says it is no longer for sale and recommends the DELTA Pro 3.
Not tested by us
We have not tested the EcoFlow DELTA Pro. The figures on this page come from the sources listed at the end of the page, checked on 11 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
3,600 Wh
Capacity
3,600 W
AC output (7,200 W surge)
1.9 hours
AC charging (EU/UK)
Specifications
Last checked on 11 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. | 3,600 Wh |
| Battery chemistryLFP (lithium iron phosphate) cells are known for long life and stable behaviour with heat. | LFP (lithium iron phosphate) |
| 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. | 3,500 cycles to 80% or more (manual). EcoFlow's UK page says 6,500 cycles to 50% of original capacity; the two figures use different end points |
| ExpansionExtra battery units that add storage to the same system. | Up to two DELTA Pro Smart Extra Batteries (manual). The UK page advertises 3.6-25 kWh of expandable capacity without listing the combination |
| 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. | 3,600 W total, 4 AC sockets, pure sine wave |
| AC output (surge)A short burst above the continuous rating, for appliances that draw more power when they start. | 7,200 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. | Up to 4,500 W for devices without strict voltage needs; not available while the unit is charging in bypass mode |
| USB-APorts for phones, tablets and small devices. | 2 ports at 12 W and 2 fast-charge ports at 18 W |
| USB-CPorts for laptops, phones and tablets. Power delivery up to 100 W can charge most laptops. | 2 ports, 100 W each (200 W total) |
| Car outletA 12 V socket like the one in a car, for car accessories. | 1 outlet, 126 W max.; it shares power with the DC5521 ports. An Anderson output gives up to 378 W |
| DC5521A small round DC connector used by routers, cameras and LED lights. | 2 ports, 38 W max. each |
| Charging | |
| AC chargingHow fast it charges from a wall socket. Higher means a shorter wait. | 2,875 W max. (EU/UK model); adjustable from 200 W, default 400 W with the switch down |
| Time to charge from the mainsHow long a full charge takes from a wall socket. | About 1.9 hours (EU/UK model) |
| Solar inputHow much solar panel power it accepts. A higher figure fills the battery faster on a sunny day. | 11-150 V, 15 A, 1,600 W max. |
| Solar charging timeHow long a full charge takes from solar panels, in the conditions the maker names. | Not stated |
| Car chargingCharging from a car's 12 V or 24 V socket while driving. Slow, but useful on the road. | 12 V or 24 V car battery, 8 A by default; no time given |
| Backup switchover (EPS)What happens when the grid fails. EPS means it takes over automatically. | Switches to battery within 30 ms. EcoFlow says this is not a 0 ms UPS |
| Housing and warranty | |
| Dimensions (L × W × H)Check the space before you buy, including room around it for airflow and cables. | 635 × 285 × 416 mm (the manual gives three numbers without naming the axes) |
| WeightMatters for lifting, wall mounting and moving it. | About 45 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. | Not stated |
| Protection ratingIP ratings show protection from dust and water. IP55 and IP65 are rated for outdoor-style exposure; check the installation guidance. | Not stated |
| WarrantyThe period the maker covers. Read the terms: conditions and capacity guarantees differ. | Not stated on EcoFlow's pages. The UK page says only that the LFP battery 'supports up to 10 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
- Up to two DELTA Pro Smart Extra Batteries.
- EcoFlow Smart Generator
- Listed as an add-on. The UK page says a separate adapter is needed to connect the Smart Generator and the 800 W Alternator Charger.
- EV charging
- The EV X-Stream Adapter lets it charge from electric vehicle charging stations.
- Solar panels
- Panels within 11-150 V and 15 A; EcoFlow lists its 160 W portable panel as an accessory.
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
- 3,600 W continuous output with 7,200 W surge
- Fast charging: about 1.9 hours (EU/UK model)
- Expandable with two Smart Extra Batteries
- Switchover to battery within 30 ms in a power cut
- LFP cells
Worth checking before you buy
- No longer for sale on EcoFlow's UK site; the DELTA Pro 3 replaces it
- Heavy at about 45 kg
- No warranty period or IP rating stated on EcoFlow's pages
- Not a 0 ms UPS: not for servers or workstations
- Not a home battery: do not connect it to your home circuits in a way that lets it feed the house
Change log
We record changes to this page here, so you can see when figures such as the warranty were last updated.
- 11 November 2026
- Page published. EcoFlow's UK page lists the DELTA Pro as no longer for sale and recommends the DELTA Pro 3. Warranty not stated.
Where this information comes from
We have not tested the DELTA Pro. The figures come from EcoFlow's user manual for the EU/UK model, and the product page on EcoFlow UK, last checked on 11 November 2026. That page says the product is no longer for sale and shows it as sold out. Where EcoFlow gives no value, we say so.
We do not show prices, because they change often and differ between sellers.
- Manufacturer EcoFlow DELTA Pro user manual (EU/UK)
- Manufacturer EcoFlow UK DELTA Pro page (no longer for sale)
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Common questions about EcoFlow DELTA Pro
Can I still buy the EcoFlow DELTA Pro from EcoFlow?
EcoFlow's UK page says it is no longer for sale and recommends the DELTA Pro 3. See our DELTA Pro 3 page.
What can the DELTA Pro run?
It is rated at 3,600 W continuous with a 7,200 W surge, and up to 4,500 W with X-Boost for suitable devices. Divide 3,600 Wh by the total draw for a rough running time.
Is the DELTA Pro 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.
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