EcoFlow DELTA Pro Runtime Calculator

Quick answer: the EcoFlow DELTA Pro stores 3,600 Wh and delivers up to 3,600 W of continuous AC power. Under this site's planning assumptions (85% inverter efficiency, 10% reserve), a steady 100 W AC load runs for roughly 27.5 hours. Last source check: 2026-08-21. This is an estimate, not a guarantee.

EcoFlow DELTA Pro portable power station
Battery capacity3,600 Wh
AC output3,600 W
Surge output7,200 W
Battery chemistryLFP
ConfidenceVerified
Source regionGlobal/general sources
checked2026-08-21
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EcoFlow DELTA Pro: Key facts
Battery capacity3,600 Wh
Battery chemistryLFP
AC output3,600 W
Surge output7,200 W
DC output378 W
USB-C output100 W
Solar input1,600 W
Weight45 kg
ConfidenceVerified
Lifecycle statusUnknown
Source regionGlobal/general sources
Last verified2026-08-21
Catalog notes (original English)

DC output stores the highest published single-port ceiling: 378W from the Anderson port; the separate car outlet is 126W. The manual labels 7,200W as surge separately from the 4,500W X-Boost appliance-support mode.

Measurement Records

Third-party results apply to the listed model, output path and test load. The delta is against a fixed no-reserve planning formula, not an error score or a prediction at other loads. Missing test conditions remain unknown.

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Measurement Records: EcoFlow DELTA Pro
TestMeasureddefault planning estimateVs estimateSource
Capacity test (AC)
Average test load: unknown
test date unknown
2,950 Wh
82%
3,060 Wh-110 Wh (-4%)OutdoorGearLab Best Power Stations of 2026
source date unknown; accessed 2026-09-04

Runtime estimate

Formula starting points use each scenario’s default watts, duty cycle and output path, with 10% reserve or 15% for CPAP. Linked detail pages use the same inputs. Hours apply only if the device can run and start; they are not measured runtimes.

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Runtime estimate
Device scenarioPlanning defaultEstimated runtimeDevice scenario: ConfidenceModels
Full-size refrigerator500 W · 33% · AC inverter · Reserve: 10%16h 41m
Within the tracked power limits; compatibility still needs checking
EstimatedOpen estimate
CPAP without heated humidifier40 W · 100% · AC inverter · Reserve: 15%2d 17h
Within the tracked power limits; compatibility still needs checking
EstimatedOpen estimate
Starlink Mini32 W · 100% · USB-C PD · Reserve: 10%3d 21h
Within the tracked power limits; compatibility still needs checking
EstimatedOpen estimate
Wi-Fi router12 W · 100% · AC inverter · Reserve: 10%9d 21h
Within the tracked power limits; compatibility still needs checking
EstimatedOpen estimate
LED TV100 W · 100% · AC inverter · Reserve: 10%1d 3h
Within the tracked power limits; compatibility still needs checking
EstimatedOpen estimate

Runtime calculator

Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.

Loading calculatorPreparing calculator
Power station model
Battery capacity (Wh): 3600 WhContinuous output rating (W): 3600 WSurge output rating (W): 7200 W
EcoFlow DELTA Pro
Estimated runtime1d 21h1d 4h – 2d 9hEstimated runtime: 1d 21h, 1d 4h – 2d 9h
Output path

Estimated runtime

Within the tracked power limits; compatibility still needs checking

This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.

1d 21hEstimated runtime: 1d 21h

This setup has comfortable headroom for overnight use, assuming the wattage estimate is realistic.

Conservative1d 4h
Estimated1d 21h
Optimistic2d 9h

These are calculated sensitivity cases, not a statistical confidence interval. Conservative uses lower efficiency and battery health, more reserve/temperature loss and higher load; optimistic changes these assumptions in the opposite direction.

  • This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.
  • Within the tracked power limits; compatibility still needs checking

Show your work

Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.

Rated battery
3600 Wh
Usable energy
2754 Wh
3600 Wh x 85% x 90% x 100% x 100%
Running watts
60 W
Average load
60 W
Max surge
n/a
Fixed station overhead
Unknown (not included)
60 W / 85% = 70.6 W battery draw; fixed overhead is unknown and excluded
Estimated runtime
1d 21h
2754 Wh / 60 W = 1d 21h
Output path
AC inverter
Efficiency (%)
85
Reserve kept unused (%)
10
Battery health (%)
100
Cold weather loss (%)
0

This link contains the numeric values you entered, but not custom load names.

Source-Backed Next Steps

Planning notes

  • Capacity class: 3,600 Wh. Size the battery for your measured average load and required hours, including reserve.
  • Tracked output: 3,600 W. Compare both running demand and startup demand before using any runtime estimate.
  • Solar input limit: 1,600 W. Actual refill depends on panel voltage/current compatibility, sunlight, angle and charging losses.

Known data gaps

  • Unverified or missing specifications remain visible. The confidence label describes the station record, not a tested runtime or approval for emergency use.
  • Weight: 45 kg. Check the complete carrying setup, cables and battery extensions before choosing this model for travel.
  • unknown: —

Models: EcoFlow

Compare nearby capacity records from the same brand, then check output, weight and missing fields. A larger battery does not establish device compatibility.

Specification comparison

Use these as planning shortcuts, then confirm the full table and sources.

Sources