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EcoFlow DELTA Pro Ultra
The biggest, most capable backup system in the catalog — for permanent installation, not occasional use.EcoFlow · Power stationsLiFePO4 (LFP)

EcoFlow DELTA Pro Ultra

The absolute top of the catalog: 6144 Wh, 7200W of output, expandable up to 90 kWh by combining batteries. Online UPS with 0-millisecond switchover.

7.8/ 10

PowerLight score

Our own read for home backup during a power outage, comparable across units in the catalog. Not Amazon buyers' rating. How we score →

Runtime10
Power10
Portability4
Expandable10
Value5
Wh
6144
W continuous
7200
kg
32.20
ASIN verified against the listing on September 21, 2026We don't sell or ship anythingSpec sheet reviewed on October 18, 2026
See price
Editorial verdict

The biggest, most capable backup system in the catalog — for permanent installation, not occasional use.

Best use case

Anyone who wants to install a permanent whole-house backup system, at the highest capacity tier in the line.

It's a different league: 6144 Wh of capacity, 7200W of continuous output, and an "online" UPS system with 0-millisecond switchover — protects sensitive equipment from any electrical disturbance, not just a total power outage. It can scale by combining up to 15 batteries to reach 90 kWh, designed as real whole-house backup for days.

At 32 kg (battery only; the inverter ships separately), it's not for occasional outages — it's meant to be installed as a permanent home backup system.

Pros

  • The biggest backup possible in the catalog: up to 90 kWh combining batteries
  • 0ms online UPS — protects against any disturbance, not just total outages
  • 7200W of continuous output covers almost any residential use
  • 5-year factory warranty

Cons

  • Inverter and battery ship separately — more complex installation
  • Built for permanent installation, not for moving around

Ideal for: Anyone who wants to install a permanent whole-house backup system, at the highest capacity tier in the line.

Mandatory check with your shipping agency. PowerLight doesn't recommend shipping methods or determine whether a product can be accepted or shipped. Before buying, ask your shipping agency to confirm in writing that they accept the exact model, along with requirements, cost, and timeline.

Estimated runtime with common household equipment

  • WiFi router10 W
    ≈ 20 d–23 d
  • LED light bulb9 W
    ≈ 23 d–26 d
  • Standing fan55 W
    ≈ 4 d–4 d
  • Standard home refrigerator150 W
    ≈ 32.8 h–36.9 h

How long EcoFlow DELTA Pro Ultra can power each device in a row, calculated with the same efficiency range (80%–90%) as the runtime calculator.

Spec sheet

Capacity
6144 Wh
Continuous output
7200 W
Peak output
21600 W
Max. solar input
—
AC charging
2.00 h
Weight
32.20 kg
Cycle life
—
Warranty
5.0 years
Battery switchover
0 milliseconds (true online UPS, not just backup)
Max expansion
90 kWh combining up to 15 batteries
Format
The inverter and battery ship in separate packages
Warranty note
EcoFlow doesn't have official support in every country: the warranty is handled through the country of purchase.

To understand this better

How many times can this charge your e-bike or electric vehicle?

Direct calculation by battery capacity (same 80%–90% efficiency range as the runtime calculator) — updates automatically as more electric mobility products are added.

LELEKUAI T1 Bicicleta Eléctrica Plegable

480 Wh

10–11charges

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EcoFlow DELTA Pro Ultra

7.8/10 PowerLight rating

See price