Station
EcoFlow DELTA 3 Classic: what does it run, and for how long?
The EcoFlow DELTA 3 Classic 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. CNET measured 947.47 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 Classic 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 Classic 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 |
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 |
|---|---|---|---|---|
| CNET | Constant 480 W AC load to depletion | 947.47 Wh delivered | 92.5% |
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 | Not listed in maker sources we checked | — |
| Boost mode | X-Boost up to 2,600 W (never counted for motors) | source |
| AC outlets | Not listed in maker sources we checked | — |
| Max USB-C port | 100 W | source |
| 12 V car port | Not listed in maker sources we checked | — |
| 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 | 1,400 W | source |
| Max solar input | 500 W | source |
| Solar voltage window | Not listed in maker sources we checked | — |
| Max with expansion | Not listed in maker sources we checked | — |
| UPS / pass-through (maker wording) | “UPS 10ms” · switchover 10 ms | source |
| Operating (discharge) temperature | -10 to 45 °C | source |
| Charging temperature | 0 to 45 °C | source |
| Cycle life | Not listed in maker sources we checked | — |
| Warranty | 5 years | source |
| Weight | 12.1 kg | source |
| Maker list price | $499, checked | source |
| Maker store stock | In stock, checked | source |
Notes and caveats
- Surge rating is not listed on the maker spec table; the starts check falls back to continuous W.
- Weight listed as "12.1kg+0.3kg"; we store 12.1 kg.
- msrpUsd is the maker store's compare-at price ($599.00) on 2026-10-17.
Related
- Similar size: Anker SOLIX C1000 Gen 2
- Similar size: BLUETTI Elite 100 V2
- Similar size: EcoFlow DELTA 3
- 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, boostMode, capacityWh, chemistry, listPrice, solarInputMaxW, tempC, ups, usbCMaxW, warrantyYears, weightKg), read
- cnet.com (CNET third-party test),