Station
EcoFlow DELTA 3: what does it run, and for how long?
The EcoFlow DELTA 3 stores 1,024 Wh and puts out 1,800 W continuous maker spec. It runs a full-size fridge for about 17 h and a ResMed AirSense 11 CPAP for about 1.9 nights calculated. OutdoorGearLab measured 870 Wh of usable AC output third-party test. Specs read .
Note: the maker doesn't publish this station's inverter efficiency, so its hours use our 0.85 default; real hours may differ either way.
No. EcoFlow DELTA 3 runs a full-size fridge for 24 hours for only about 17 h, short of 24 h. calculated from maker specs, .
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Goal: 24 h. Hours use maker inverter efficiency where published, otherwise the 0.85 estimate, and leave out idle draw the maker doesn't publish. Stations shown out of stock or with availability not shown are skipped. How we pick.
What the DELTA 3 runs
Each row is one device on its own. Hours are calculated from the maker specs below and our cited appliance figures; change anything in the calculator.
| Device | Runs | Starts | About | Assumes |
|---|---|---|---|---|
| Refrigerator (full-size) | Yes | Yes | 17 h | cycling, ENERGY STAR median energy |
| Freezer | Yes | Yes | 35 h | cycling, ENERGY STAR median energy |
| ResMed AirSense 11 CPAP (manual typical draw) | Yes | Yes | 1.9 nights | 8-hour nights |
| Internet router/modem | Yes | Yes | 58 h | on continuously |
| Starlink Standard dish | Yes | Yes | 14 h | on continuously |
| TV (55 in, ENERGY STAR) | Yes | Yes | 9.0 h | on continuously |
| Sump pump (1/3 HP) | Yes | Yes | 1.3 h | running continuously |
| Window AC (5,000 BTU) | Yes | Yes | 1.7 h | running continuously |
| Microwave | Yes | Yes | 1.0 h | running continuously |
| Space heater | Yes | Yes | 0.6 h | high setting, continuously |
With extra batteries
Full-size fridge hours with expansion packs calculated:
- At the maker's maximum (5,000 Wh total): about 82 h
Solar recharge
From empty, at 75% of panel rating and capped by the 500 W solar input calculated: 200 W of panels about 6.8 h; 400 W of panels about 3.4 h.
Third-party test results
| Reviewer | Load | Result third-party test | Share of rated Wh | Published |
|---|---|---|---|---|
| OutdoorGearLab | AC load bank at ~80% of rated output to depletion | 870 Wh delivered | 85.0% |
Results are the reviewers' own, quoted as published with their method. They are not ours.
Specs from the maker
| Spec | Value maker spec | Source |
|---|---|---|
| Battery capacity | 1,024 Wh | source |
| Chemistry | LiFePO4 | source |
| AC continuous output | 1,800 W | source |
| AC surge | 3,600 W | source |
| Boost mode | X-Boost up to 2,200 W (never counted for motors) | source |
| AC outlets | 6 | source |
| Max USB-C port | 100 W | source |
| 12 V car port | 126 W | source |
| Inverter efficiency | Not listed in maker sources we checked (calculated hours use the 0.85 default) | — |
| Inverter idle draw | Not listed in maker sources we checked | — |
| AC charging input | 1,500 W | source |
| Max solar input | 500 W | source |
| Solar voltage window | 11–60 V | source |
| Max with expansion | 5,000 Wh | source |
| UPS / pass-through (maker wording) | “UPS <10ms” · switchover 10 ms | source |
| Operating (discharge) temperature | Not listed in maker sources we checked | — |
| Charging temperature | Not listed in maker sources we checked | — |
| Cycle life | 4,000 cycles to 80% | source |
| Warranty | 5 years | source |
| Weight | 12.5 kg | source |
| Maker list price | $629, checked | source |
| Maker store stock | In stock, checked | source |
Notes and caveats
- Temperature ranges are not listed on the maker product page we checked.
- msrpUsd is the maker store's compare-at price ($699.00) on 2026-10-17.
Related
- Anker SOLIX C1000 Gen 2 vs EcoFlow DELTA 3
- BLUETTI Elite 100 V2 vs EcoFlow DELTA 3
- EcoFlow DELTA 3 vs Jackery Explorer 1000 v2
- Similar size: Anker SOLIX C1000 Gen 2
- Similar size: BLUETTI Elite 100 V2
- Similar size: EcoFlow DELTA 3 Classic
- Similar size: EcoFlow DELTA 3 Plus
- Similar size: Jackery Explorer 1000 v2
- What size power station you need for a power outage
Sources
- us.ecoflow.com (acContinuousW, acInputMaxW, acOutlets, acSurgeW, boostMode, capacityWh, chemistry, cycleLife, dc12vW, expansion, listPrice, solarInputMaxW, solarVoc, ups, usbCMaxW, warrantyYears, weightKg), read
- outdoorgearlab.com (OutdoorGearLab third-party test),