EcoFlow DELTA Pro 3 Portable Power Station Review
A 4,096 Wh LFP station with 120 V and 240 V output, 4,000 W continuous, 2,600 W of solar input and expansion to 12 kWh with two extra batteries.
By Watt Versus Editorial· Updated
This page was drafted with AI assistance from manufacturers' specs and manuals, and is checked by our editor.
Our verdict
The pick for backing up a whole house: 4 kWh in one unit, real 240 V output and room to grow to 12 kWh. If you need more solar input or 6,000 W from a single unit, look at the Anker SOLIX F3800 Plus.
Pros and cons
Pros
- 4,096 Wh and 4,000 W continuous at 120 V or 240 V from one unit, with a 240 V L14-30R outlet for a transfer switch
- Up to 2,600 W of solar input across two ports
- 4,000 cycles to 80% capacity and a 10 ms backup switchover, by EcoFlow's figures
- Grows to 12 kWh with two Smart Extra Batteries, more with EcoFlow's home panel
Cons
- 113.5 lb: it rolls on wheels, but it is heavy to lift into a vehicle
- EcoFlow's 0-80% in 50 minutes figure does not say which input it assumes; a standard 120 V, 15 A outlet can supply at most 1,800 W
- Wiring it into the house needs EcoFlow's Smart Home Panel 2 or a transfer switch, installed by an electrician
- The full 5-year warranty needs registration in the EcoFlow app; the standard warranty is 3 years
Specifications
| Capacity | 4,096 Wh |
|---|---|
| Battery chemistry | LiFePO4 (LFP) |
| Rated cycle life | 4,000 cycles to 80% capacity |
| AC output | 4,000 W at 120/240 V (X-Boost up to 6,000 W) |
| Peak output | 8,000 W surge |
| AC outlets | 4 x NEMA 5-20R and 1 x TT-30R at 120 V; 1 x NEMA 6-20R at 240 V; 1 x L14-30R at 120/240 V |
| USB-C output | 2 x 100 W |
| Wall recharge | 0-80% in 50 minutes, per EcoFlow; AC input 100-240 V, 15 A |
| Max solar input | 2,600 W (1,600 W high-voltage port + 1,000 W low-voltage port) |
| Expandable to | 12 kWh with two DELTA Pro 3 Smart Extra Batteries |
| Backup switchover | 10 ms |
| Weight | 113.5 lb (51.5 kg) |
| Dimensions | 16.2 x 13.4 x 27.3 in |
| Warranty | 5 years (3 years standard plus 2 years with EcoFlow app registration) |
Who it suits
Homeowners who want one rolling unit to carry a house through an outage, including 240 V loads through a transfer switch. EcoFlow says it can run a 3-ton central air conditioner and a 1 HP water pump. EcoFlow rates it at 4,000 W continuous at 120 V or 240 V, with a 10 ms switchover when the grid drops, and the 4,096 Wh battery is rated for 4,000 cycles to 80% capacity.
It also suits owners who plan to add solar: the two inputs take up to 2,600 W combined, and two DELTA Pro 3 Smart Extra Batteries take it to 12 kWh. See how it compares with Anker's whole-home unit in DELTA Pro 3 vs SOLIX F3800 Plus.
Who should skip it
Campers and anyone who needs to lift the station often: it weighs 113.5 lb. For a station you can carry, the DELTA 3 Max Plus holds 2,048 Wh at 48.7 lb. Buyers with a large solar array may prefer the Anker SOLIX F3800 Plus, which takes 3,200 W of solar.
What we could not confirm
EcoFlow quotes 0-80% in 50 minutes but does not say which charging input or voltage that figure assumes; on a 120 V, 15 A outlet the input is limited to 1,800 W. EcoFlow's 48 kWh system figure needs three DELTA Pro 3 units, extra batteries, generators and the Smart Home Panel 2, so we list the 12 kWh single-unit figure in the table.
Frequently asked questions
- Can the EcoFlow DELTA Pro 3 power 240 V appliances?
- Yes. EcoFlow lists a NEMA 6-20R outlet at 240 V and an L14-30R outlet at 120/240 V, with 4,000 W continuous output from one unit.
- How much can the DELTA Pro 3 expand?
- To 12 kWh with two DELTA Pro 3 Smart Extra Batteries, according to EcoFlow. Larger systems need several units and EcoFlow's Smart Home Panel 2.
- How much solar can the DELTA Pro 3 take?
- Up to 2,600 W: 1,600 W on the high-voltage port (30-150 V) and 1,000 W on the low-voltage port (11-60 V), by EcoFlow's figures.
Sources
The specifications and claims on this page come from these manufacturer documents. Figures are the manufacturers' own unless the text says otherwise.
Ready to buy the EcoFlow DELTA Pro 3 Portable Power Station?
Prices change often. See the current price and availability on Amazon.
Compare and read more
VS comparison
EcoFlow DELTA Pro 3 Portable Power Station vs Anker SOLIX F3800 Plus Portable Power Station
Two whole-home power stations with 120 V and 240 V output and room to expand. The DELTA Pro 3 holds more and weighs less; the F3800 Plus takes more solar and puts out more power.
Updated October 24, 2026
Best of
Best Portable Power Stations for Home Backup (2026)
Five stations for outages, from a small UPS for your router to 2 kWh systems that expand to 8 or 12 kWh and run a fridge for days.
Updated October 24, 2026
Best of
Best Portable Power Stations for Winter Power Outages (2026)
Five battery stations for keeping the fridge, internet and phones going through an ice storm, and an honest note on why none of them is a heater.
Updated October 24, 2026