EcoFlow DELTA 3 Max Plus
A 2,048 Wh LFP portable power station with 3,000 W of AC output, 1,000 W of solar input, a battery port for expansion and a 3+2 year warranty.
- Best for home backup and RVs
- Power station
- 2,048 Wh
- 3,000 W
- Made by EcoFlow.
- Capacity: 2,048 Wh with LFP cells. One extra battery port (expandable to two) takes it up to 10 kWh with two DELTA Pro 3 Extra Batteries.
- Output: 3,000 W continuous across 4 AC outlets, 6,000 W surge, and up to 3,900 W with X-Boost. It adds Output Priority and X-Fusion, which the DELTA 3 Max lacks.
- Recharges from the mains at 2,300 W (47 minutes to 80%, 68 minutes to 100%) or from solar at up to 1,000 W (2 x 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 Plus. The figures on this page come from the sources listed at the end of the page, checked on 13 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 (expandable to 10 kWh)
3,000 W
AC output (6,000 W surge)
3+2 years
Warranty
Specifications
Last checked on 13 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 (automotive-grade full-tab cells, 16-cell design). EcoFlow estimates a lifespan of about 10 years from internal simulation data, for reference only |
| 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. | 1 extra battery port (4+8 type), expandable to 2. Up to 10 kWh with 2 x DELTA Pro 3 Extra Battery. Compatible extra batteries: DELTA 2 Max, DELTA 3 Max Plus, DELTA 3 and DELTA Pro 3 extra batteries. EcoFlow notes that connecting two extra batteries needs an Extra Battery Expansion Adapter that it said would be released soon |
| 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. | 3,000 W, 4 AC outlets (230 V 50 Hz, 13 A max per port) |
| AC output (surge)A short burst above the continuous rating, for appliances that draw more power when they start. | 6,000 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 3,900 W (X-Boost 3.0) |
| X-FusionWhile it is plugged into the grid or a generator, the inverter can supply more than a standard plug passes through, so one outlet can deliver its full rated power. | Yes (the DELTA 3 Max does not have it). EcoFlow's page lists X-Fusion without further detail |
| Smart Output PriorityLets you choose in the app which circuits stay powered, so non-essential loads shut off and the essentials run longer. | Yes. Choose which circuits stay powered in the EcoFlow app and shed non-essential loads during outages (Smart Power Reserve) |
| Total output powerThe maker's figure for all ports together. It can differ from the AC rating because USB and DC ports add to it. | 3,581 W max across all ports, 10 output ports in total |
| 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, 140 W max (HID), plus 2 ports sharing 45 W in total |
| Car outletA 12 V socket like the one in a car, for car accessories. | 1 outlet, 12.6 V 10 A, plus an Anderson output, 12.6 V 30 A (378 W max for the 12 V outputs together) |
| Charging | |
| AC chargingHow fast it charges from a wall socket. Higher means a shorter wait. | 2,300 W (depending on input voltage), 220-240 V 10 A 50/60 Hz |
| Time to charge from the mainsHow long a full charge takes from a wall socket. | 47 minutes to 80%, 68 minutes to 100% |
| Solar inputHow much solar panel power it accepts. A higher figure fills the battery faster on a sunny day. | 1,000 W max (2 x 500 W) |
| Solar charging timeHow long a full charge takes from solar panels, in the conditions the maker names. | 96 minutes to 80% at 1,000 W |
| Generator chargingHow fast it can charge from a petrol or dual-fuel generator. Higher means a shorter wait with a generator running. | 2,400 W max (0 to 80% in 47 minutes with a generator, EcoFlow says) |
| 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 1,000 W through the 4+8 port (95 minutes to 80% with the Alternator Charger Plus 1000, sold separately and listed as launching soon); solar plus alternator together 51 minutes to 80% |
| Backup switchover (EPS)What happens when the grid fails. EPS means it takes over automatically. | 10 ms UPS, with HID support |
| 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, 1,000 W max (2 x 500 W). |
| 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 × 242 × 305 mm (EcoFlow does not say which number is which axis) |
| WeightMatters for lifting, wall mounting and moving it. | About 22.1 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 |
| Operating altitudeThe maximum height above sea level it is rated to work at. | Up to 3,000 m |
| Noise levelFan noise while working. | 25 dB or less at 600 W (measured at 0.5 m, 25 °C) |
| Protection ratingIP ratings show protection from dust and water. IP55 and IP65 are rated for outdoor-style exposure; check the installation guidance. | Not stated |
| DisplayWhether the unit has its own screen showing charge level and power in and out. | Yes, built-in screen |
| ConnectivityHow you monitor and control it, usually through an app. | Wi-Fi, Bluetooth and the EcoFlow app (energy dashboard, Storm Guard Mode, scheduled charging) |
| Battery protectionThe safety cut-outs and battery management features the maker lists, such as over-voltage, overload and over-temperature protection. | Over-voltage, overload, over-temperature, short-circuit, low-temperature, low-voltage and over-current protection; smart BMS with 24/7 monitoring; cell-to-chassis (CTC) structure |
| 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
- DELTA 3 Max Plus Smart Extra Battery (2,048 Wh, 494 x 239 x 196 mm, 16 kg, 4+8 port), DELTA 2 Max, DELTA 3 and DELTA Pro 3 extra batteries. Up to 10 kWh with 2 DELTA Pro 3 extra batteries.
- Solar panels
- Two solar inputs, 1,000 W in total. EcoFlow lists its 220 W and 400 W lightweight portable panels as bundle options.
- Alternator and generator
- Alternator charging up to 1,000 W (Alternator Charger Plus 1000) 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
- 3,000 W continuous, 3,900 W with X-Boost
- Expandable to 10 kWh with extra batteries
- Two solar inputs, 1,000 W in total
- Mains charging to 80% in 47 minutes (EcoFlow's figure)
- Smart Output Priority and 10 ms UPS switchover
- 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 22.1 kg
- Reaching 10 kWh needs an expansion adapter that EcoFlow listed as coming soon
- No cycle life or protection rating stated
- 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.
- 13 November 2026
- Page published. Warranty at publication: 3+2 years (EcoFlow UK product page). The page showed the DELTA 3 Max Plus as a pre-order, with shipping from 21 December 2026. Our DELTA 3 Max page covers the lower-powered model of the same series.
Where this information comes from
We have not tested the DELTA 3 Max Plus. Every figure above comes from EcoFlow's own pages: the DELTA 3 Max Series page and the DELTA 3 Max Plus specification page on its UK site, and the DELTA 3 Max Plus Smart Extra Battery page, last checked on 13 November 2026. The series pages compare the DELTA 3 Max and the Max Plus; we only show the Max Plus values. The dimensions are listed without naming the axes. A value that these pages do not state is shown as not stated.
We do not show prices, because they change often and differ between sellers.
- Manufacturer EcoFlow UK DELTA 3 Max Series page (DELTA 3 Max and DELTA 3 Max Plus; features and comparison table)
- Manufacturer EcoFlow UK DELTA 3 Max Plus specification page
- Manufacturer EcoFlow UK DELTA 3 Max Plus Smart Extra Battery page
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Common questions about EcoFlow DELTA 3 Max Plus
What can the DELTA 3 Max Plus run?
EcoFlow rates it at 3,000 W continuous and 6,000 W surge, with X-Boost reaching 3,900 W for suitable devices. EcoFlow says that covers a microwave, kettle, fridge and blender at the same time. Divide 2,048 Wh by the load for a rough running time.
Can the DELTA 3 Max Plus be expanded?
Yes. It has one extra battery port, expandable to two, and EcoFlow lists up to 10 kWh with two DELTA Pro 3 Extra Batteries. Compatible extra batteries are those of the DELTA 2 Max, DELTA 3 Max Plus, DELTA 3 and DELTA Pro 3. Two extra batteries need an expansion adapter that EcoFlow said would be released soon.
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) against 2,400 W, accepts 1,000 W of solar against 500 W, adds Output Priority, X-Fusion, an extra battery port and a 140 W USB-C port. Both hold 2,048 Wh and have a 3+2 year warranty.
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