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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.

| Battery capacity | 3,600 Wh |
|---|---|
| Battery chemistry | LFP |
| AC output | 3,600 W |
| Surge output | 7,200 W |
| DC output | 378 W |
| USB-C output | 100 W |
| Solar input | 1,600 W |
| Weight | 45 kg |
| Confidence | Verified |
| Lifecycle status | Unknown |
| Source region | Global/general sources |
| Last verified | 2026-08-21 |
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.
| Test | Measured | default planning estimate | Vs estimate | Source |
|---|---|---|---|---|
| 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.
| Device scenario | Planning default | Estimated runtime | Device scenario: Confidence | Models |
|---|---|---|---|---|
| Full-size refrigerator | 500 W · 33% · AC inverter · Reserve: 10% | 16h 41m Within the tracked power limits; compatibility still needs checking | Estimated | Open estimate |
| CPAP without heated humidifier | 40 W · 100% · AC inverter · Reserve: 15% | 2d 17h Within the tracked power limits; compatibility still needs checking | Estimated | Open estimate |
| Starlink Mini | 32 W · 100% · USB-C PD · Reserve: 10% | 3d 21h Within the tracked power limits; compatibility still needs checking | Estimated | Open estimate |
| Wi-Fi router | 12 W · 100% · AC inverter · Reserve: 10% | 9d 21h Within the tracked power limits; compatibility still needs checking | Estimated | Open estimate |
| LED TV | 100 W · 100% · AC inverter · Reserve: 10% | 1d 3h Within the tracked power limits; compatibility still needs checking | Estimated | Open 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.
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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 21hThis setup has comfortable headroom for overnight use, assuming the wattage estimate is realistic.
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.
WattRunTime.com
WattRunTime estimate
Estimated runtime
1d 21hThis setup has comfortable headroom for overnight use, assuming the wattage estimate is realistic.Runtime range
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Assumptions
- 3600 Wh nominal battery capacity
- AC inverter output path
- 85% conversion efficiency
- 10% reserve kept unused
- 60 W average load from 1 load
- 100% battery health
- 0% temperature loss
- Fixed station overhead unknown; not included
Warnings
- 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
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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.
EcoFlow DELTA Pro 3
4,096 Wh · AC output: 4,000 W · Confidence: Verified
EcoFlow DELTA 3 Ultra
3,072 Wh · AC output: 3,600 W · Confidence: Verified
EcoFlow DELTA 3 Ultra Plus
3,072 Wh · AC output: 3,600 W · Confidence: Verified
Specification comparison
Use these as planning shortcuts, then confirm the full table and sources.
Jackery Explorer 2000 Plus vs EcoFlow DELTA Pro
2,042.8 Wh / 3,600 Wh · AC output: 3,000 W / 3,600 W
Sources
- EcoFlow DELTA Pro user manual (Official; checked 2026-08-21)
