EcoFlow DELTA 3 Max
A 2,048 Wh LFP portable power station with 2,400 W of AC output, 2,300 W mains charging and a 3+2 year warranty.
- Best for home backup and camping
- Power station
- 2,048 Wh
- 3+2 year warranty
- Made by EcoFlow.
- Capacity: 2,048 Wh with LFP cells. The plain DELTA 3 Max has no extra battery port; expansion is listed only for the DELTA 3 Max Plus.
- Output: 2,400 W continuous across 4 AC outlets, 4,800 W surge, and up to 3,200 W with X-Boost.
- Recharges from the mains at 2,300 W (68 minutes) or from solar at up to 500 W.
- EcoFlow's page showed it as a pre-order, with shipping from 21 December 2026.
Not tested by us
We have not tested the EcoFlow DELTA 3 Max. The figures on this page come from the sources listed at the end of the page, checked on 12 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
2,048 Wh
Capacity
2,400 W
AC output (4,800 W surge)
3+2 years
Warranty
Specifications
Last checked on 12 November 2026. The grey text under each name explains what the value means. To see it next to other products, compare it in our comparison tool.
| Specification | Value |
|---|---|
| Storage | |
| CapacityHow much energy the battery stores. Bigger means longer runtime or more of your own solar power used later. | 2,048 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. | Not stated |
| ExpansionExtra battery units that add storage to the same system. | None on the DELTA 3 Max (no extra battery port). The DELTA 3 Max Plus has one port, expandable to two, for up to 10 kWh |
| 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. | 2,400 W, 4 AC outlets |
| AC output (surge)A short burst above the continuous rating, for appliances that draw more power when they start. | 4,800 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 3,200 W |
| USB-APorts for phones, tablets and small devices. | 1 port, 18 W max |
| USB-CPorts for laptops, phones and tablets. Power delivery up to 100 W can charge most laptops. | 1 port, 100 W max (HID), plus 2 ports sharing 30 W in total |
| Car outletA 12 V socket like the one in a car, for car accessories. | 1 outlet, 12.6 V 10 A, 126 W max |
| Charging | |
| AC chargingHow fast it charges from a wall socket. Higher means a shorter wait. | 2,300 W |
| Time to charge from the mainsHow long a full charge takes from a wall socket. | 68 minutes |
| Solar inputHow much solar panel power it accepts. A higher figure fills the battery faster on a sunny day. | 500 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/24 V, 8 A. Alternator charging up to 500 W through the XT60 port; generator charging up to 2,400 W |
| Backup switchover (EPS)What happens when the grid fails. EPS means it takes over automatically. | 10 ms (UPS) |
| Solar and off-grid | |
| Works with solar panelsWhether you can charge it from solar panels. Yes means a built-in solar input or a compatible solar setup; read the detail for the voltage and power limits. | Yes: built-in solar input, 500 W max. |
| Off-grid useWhether the maker describes it running with no grid connection at all, for example in a cabin, van or off-grid home. Backup only means it covers power cuts but needs the grid the rest of the time. | Yes: runs devices from its own battery with no mains connection and recharges from solar. |
| Housing and warranty | |
| Dimensions (L × W × H)Check the space before you buy, including room around it for airflow and cables. | 494 × 239 × 305 mm (EcoFlow does not say which number is which axis) |
| WeightMatters for lifting, wall mounting and moving it. | About 20.3 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, storage -10 to 45 °C |
| Noise levelFan noise while working. | 25 dB or less at 600 W |
| Protection ratingIP ratings show protection from dust and water. IP55 and IP65 are rated for outdoor-style exposure; check the installation guidance. | Not stated |
| ConnectivityHow you monitor and control it, usually through an app. | Wi-Fi, Bluetooth and the EcoFlow app |
| WarrantyThe period the maker covers. Read the terms: conditions and capacity guarantees differ. | 3+2 years (3-year standard warranty plus 2 years extra after registering in the EcoFlow app) |
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 extra battery compatibility only for the DELTA 3 Max Plus (DELTA 2 Max, DELTA 3 Max Plus, DELTA Pro 3 and DELTA 3 Extra Battery).
- Solar panels
- One solar input up to 500 W. EcoFlow lists its 400 W and 220 W portable panels as accessories.
- Alternator and generator
- Alternator charging up to 500 W through the XT60 port and generator charging up to 2,400 W are listed.
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
- 2,400 W continuous, 3,200 W with X-Boost
- 2,300 W mains charging, 68 minutes (EcoFlow's figure)
- Quiet: 25 dB or less at 600 W
- 3+2 year warranty
Worth checking before you buy
- Pre-order at the time of checking, with shipping from 21 December 2026
- Weighs about 20.3 kg
- Cannot be expanded; the Plus version adds that
- Solar input is limited to 500 W
- 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. Warranty at publication: 3+2 years (EcoFlow UK product page). The page showed the DELTA 3 Max as a pre-order, with shipping from 21 December 2026; the DELTA 3 Max Plus had the same date.
- 12 November 2026
- Added the Solar and off-grid specifications (solar panels and off-grid use).
Where this information comes from
We have not tested the DELTA 3 Max. Every figure above comes from the DELTA 3 Max Series page on EcoFlow's UK site, which compares the DELTA 3 Max and the DELTA 3 Max Plus; we only show the DELTA 3 Max values, last checked on 11 November 2026. A value that the page does not state is shown as not stated. The DELTA 3 Max is a different product from the DELTA 3 Max Plus, DELTA 3 Plus and DELTA 3 Classic.
We do not show prices, because they change often and differ between sellers.
Spotted an error?
Tell us through the contact form on our About Us page.
Common questions about EcoFlow DELTA 3 Max
What can the DELTA 3 Max run?
EcoFlow rates it at 2,400 W continuous and 4,800 W surge, with X-Boost reaching 3,200 W for suitable devices. That covers a fridge, TV and computer together, and with X-Boost some kettles. Divide 2,048 Wh by the load for a rough running time.
Can the DELTA 3 Max be expanded?
Not according to EcoFlow's comparison table: it lists no extra battery port for the DELTA 3 Max. The DELTA 3 Max Plus has one port (expandable to two) for up to 10 kWh.
What is the difference between the DELTA 3 Max and the Max Plus?
On EcoFlow's table the Plus outputs 3,000 W (6,000 W surge), accepts 1,000 W of solar, has extra battery ports and 140 W USB-C. The DELTA 3 Max outputs 2,400 W and accepts 500 W of solar. Both hold 2,048 Wh.
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