Skip to content
Menu

EcoFlow

EcoFlow DELTA Pro 3 Portable Power Station (4,096Wh, 120V/240V)

A 4,096Wh LFP home-backup power station with 4,000W of 120V/240V output (8,000W surge), 2,600W of dual solar input and expansion to 12kWh per unit, listed by EcoFlow as UL 9540 certificated.

Check price on Amazon Compare
A woman and a girl pressing the power button on an EcoFlow DELTA Pro 3 in a laundry room
1 / 1 · lifestyle · hover to zoom

Photo: EcoFlow

Key facts

Capacity
4,096Wh, LFP
Expansion
Up to 12kWh per unit with 2 DELTA Pro 3 Extra Batteries; up to 36kWh across 3 units on EcoFlow's Smart Home Panel 2 (48kWh with Smart Generators)
AC output
120/240V, 60Hz, 4,000W total (6,000W with X-Boost); 8,000W surge
AC outlets
4 x NEMA 5-20R (120V 20A); 1 x TT-30R (120V 30A); 1 x NEMA 6-20R (240V 16.7A); 1 x L14-30R (120/240V 16.7A)
DC outputs
2 x USB-C 100W; 2 x USB-A 18W; 12V outputs 378W total (DC5521 5A and Anderson 30A)
AC charging
100-240V, 15A (charge only); bypass 100-120V, 15A for up to 3 hours, 12A continuous
Solar input
2,600W total over 2 ports: high-PV 30-150V 15A 1,600W max; low-PV 11-60V 20A 1,000W max

Which version should you buy?

This page covers: DELTA Pro 3 standalone station (EFDELTAPRO3-US).

  • DELTA Pro 3 alone

    This page

    Model: EFDELTAPRO3-US

    What differs
    The standalone station has 4,096Wh capacity and 4,000W continuous output.
    Best for
    Buyers selecting their own backup accessories.
    Check price on Amazon

  • DELTA Pro 3 with 400W panel

    Model: EFDELTAPRO3-US (station)

    What differs
    Adds a 400W solar panel.
    Best for
    Buyers wanting solar charging included.

  • DELTA Pro 3 with one extra battery

    Model: DELTA Pro 3 + Extra Battery

    What differs
    Adds an expansion battery; the maker calls this the 8kWh kit.
    Best for
    Buyers needing longer backup runtime.

  • DELTA Pro 3 with two extra batteries

    Model: DELTA Pro 3 + 2 × DP3 Extra Battery

    What differs
    Adds two extra batteries for the maker’s 12kWh configuration.
    Best for
    Buyers wanting the largest stated single-station battery setup.

  • DELTA Pro 3 with Smart Generator 4000

    Model: DELTA Pro 3 + Smart Generator 4000 (Dual Fuel)

    What differs
    Adds the dual-fuel generator; its gasoline rating is 3,200W despite the model name.
    Best for
    Buyers wanting fuel-powered charging for extended outages.

  • DELTA Pro 3 with Smart Home Panel 2

    Model: DELTA Pro 3 + Smart Home Panel 2

    What differs
    Adds the home circuit panel, which requires installation.
    Best for
    Homeowners planning an installed backup connection.

  • DELTA Pro 3 extra battery alone

    Model: DELTA Pro 3 Smart Extra Battery

    What differs
    A 4,096Wh expansion battery without the power station.
    Best for
    Compatible station owners adding capacity.

Watch out

  • The station alone is 4,096Wh; the 8kWh and 12kWh configurations include extra batteries.
  • A standalone extra battery is not a power station.
  • Smart Generator 4000 is rated at 3,200W on gasoline, explaining the different number in the candidate label.
  • Smart Home Panel and generator kits add separate equipment; panel installation is required.
  • Check panel count and cable contents: an XT60 cable listing is not a two-panel kit.

Why people pick it

  • 120V and 240V output, including an L14-30R and a NEMA 6-20R
  • 4,000W continuous and 8,000W surge for well pumps and other start-up loads
  • 2,600W of solar over high- and low-voltage inputs
  • Expands to 12kWh per unit, and to 36kWh in a three-unit system
  • Listed by EcoFlow as UL 9540 certificated, the standard for energy storage systems

Know before you buy

  • 113.5 lb: it rolls on wheels but is heavy
  • A house connection needs EcoFlow's Smart Home Panel 2, an inlet box or a manual transfer switch, fitted by a licensed electrician
  • Not compatible with the DELTA Pro Ultra or a DELTA Pro main unit; the older DELTA Pro Smart Extra Battery works on the latest firmware (EcoFlow)

Full specifications

Capacity4,096Wh, LFP
ExpansionUp to 12kWh per unit with 2 DELTA Pro 3 Extra Batteries; up to 36kWh across 3 units on EcoFlow's Smart Home Panel 2 (48kWh with Smart Generators)
AC output120/240V, 60Hz, 4,000W total (6,000W with X-Boost); 8,000W surge
AC outlets4 x NEMA 5-20R (120V 20A); 1 x TT-30R (120V 30A); 1 x NEMA 6-20R (240V 16.7A); 1 x L14-30R (120/240V 16.7A)
DC outputs2 x USB-C 100W; 2 x USB-A 18W; 12V outputs 378W total (DC5521 5A and Anderson 30A)
AC charging100-240V, 15A (charge only); bypass 100-120V, 15A for up to 3 hours, 12A continuous
Solar input2,600W total over 2 ports: high-PV 30-150V 15A 1,600W max; low-PV 11-60V 20A 1,000W max
Car input12V 8A max or 48V 20A max
UPS switchover10 ms
Cycle life4,000 cycles to 80% capacity
Battery ratingIP65 battery
Safety listingEcoFlow's product title says 'UL9540 Certificated'
ConnectivityWi-Fi 2.4GHz, Bluetooth, CAN
Operating temperatureCharge 32-113°F (0-45°C); discharge 14-113°F (-10-45°C)
Size410.4 x 341 x 693 mm (16.16 x 13.43 x 27.28 in)
Weight51.5 kg (113.54 lb)
Warranty5 years

From manufacturer documentation, checked November 2, 2026. Spotted an error? Tell us.

Featured in

Best picks

Best Portable Power Stations and Solar Generators in 2026

Portable power stations sized by what you need to run, from a 286Wh gift to 4kWh home backup, with output, solar input and UPS figures from makers' specs.

Updated November 2, 2026Read

Best picks

Home Battery Backup: The Power Stations That Can Back Up a House

Home backup batteries from EcoFlow, Anker SOLIX, Jackery and BLUETTI compared on 240V output, surge, expansion, solar input and safety listings.

Updated November 2, 2026Read

Alternatives to consider