How long will the EcoFlow RIVER 3 Plus run a fridge, CPAP or sump pump?
286 Wh, 600 W AC output, 1,200 W surge. After conversion losses about 243 Wh reaches your appliances. Every figure below is worked out from EcoFlow's published specs and the sourced appliance data on Methods.
Last updatedOct 18, 2026
Specs and priceEcoFlow US store, read Oct 18, 2026: $299
The short answer
- Top-freezer fridge, ENERGY STAR median (41.4 W average)5.9 h
- Side-by-side fridge, ENERGY STAR median (73.1 W average)3.3 h
- CPAP, AirSense 10 at 10 cmH2O, no humidifier (11.2 W)2.7 nights
- Internet gateway (17 W) plus three LED bulbs (26.4 W)5.6 h
- Sump pumps it can start, of 5 checked0
- Wall outlet, empty to full1 h
Try your own list: runtime calculator with the RIVER 3 Plus · outage sizing · charge time · solar recharge
Runtime for common appliances
Hours = 286 Wh × 100% usable × 85% efficiency ÷ (the appliance's watts), one appliance at a time, from full. Basis: Jackery's published 0.85 runtime factor; 100% of capacity usable (the station's own cutoff), an example since the maker doesn't publish it. The output check compares the station's 600 W output with the appliance's peak running draw (a fridge's defrost heater counts) and its 1,200 W surge with the start-up draw.
| Appliance | Watts used | Runs for | Peak running, W | Start-up, W | Output check |
|---|---|---|---|---|---|
| Refrigerator, top freezerENERGY STAR certified-product data (data.energystar.gov) | 41.4average, compressor cycling included | 5.9 h | 425 | 320 | Runs it |
| Refrigerator, bottom freezerENERGY STAR certified-product data (data.energystar.gov) | 64.6average, compressor cycling included | 3.8 h | 425 | 320 | Runs it |
| Refrigerator, side by sideENERGY STAR certified-product data (data.energystar.gov) | 73.1average, compressor cycling included | 3.3 h | 425 | 320 | Runs it |
| Upright freezerENERGY STAR certified-product data (data.energystar.gov) | 50average, compressor cycling included | 4.9 h | 425 | 320 | Runs it |
| Chest freezerENERGY STAR certified-product data (data.energystar.gov) | 24.9average, compressor cycling included | 9.8 h | 160 | 320 | Runs it |
| Microwave ovenWhirlpool, Generator Usage with Appliances | 1,100running | — | 1,100 | 1,100 | Too much: needs 1,100 W |
| CPAP (ResMed AirSense 11) medicalResMed AirSense 11 user guide, technical specifications | 56.1average | 4.3 h | 73.2 | 73.2 | Runs it |
| Oxygen concentrator (Philips EverFlo) medicalPhilips Respironics EverFlo brochure | 350running | 42 min | 350 | 350 | Runs it |
| Sump pump, 3/10 HP (Zoeller M53)Zoeller Model M53 spec page | 1,116running | — | 1,116 | 3,347 | Too much: needs 1,116 W |
| Window AC, 8,000 BTUENERGY STAR certified-product data (data.energystar.gov) | 533running | 27 min | 533 | 1,066 | Runs it |
| Space heater (Lasko 754200)Lasko 754200 product page | 1,500running | — | 1,500 | 1,500 | Too much: needs 1,500 W |
| Ceiling fan, 50 to 54 in, highENERGY STAR certified-product data (data.energystar.gov) | 28.6running | 8.5 h | 28.6 | 28.6 | Runs it |
| TV, 55 inENERGY STAR certified-product data (data.energystar.gov) | 96.5running | 2.5 h | 96.5 | 96.5 | Runs it |
| Internet gateway (Xfinity XB8)CableLabs Energy Reporting, Comcast small network equipment | 17running | 14.3 h | 17 | 17 | Runs it |
| LED bulb, 60 W equivalent (Feit OM60DM)Feit Electric OM60DM/927CA product page | 8.8running | 27.6 h | 8.8 | 8.8 | Runs it |
| Phone charger (Apple 20W USB-C)Apple 20W USB-C Power Adapter | 20running | 12.2 h | 20 | 20 | Runs it |
Fridge and freezer hours use ENERGY STAR median yearly energy, which includes cycling and defrost. Microwave, heater and AC hours are for nonstop use. Refrigerator calculator for your own fridge's label.
CPAP nights
Medical equipment
A power station is not a medical backup system, and these are planning estimates. Ask your device maker or equipment supplier how to run your CPAP from battery power, and keep a plan for longer outages. What to check first.
| AirSense setup | Draw, W | Nights |
|---|---|---|
| No humidifier, SlimLine tubing | 11.2 | 2.7 |
| Humidifier at 4, SlimLine tubing | 27.6 | 1.1 |
| Humidifier at 8, SlimLine tubing | 43.9 | 0.7 |
| Heated tube (ClimateLineAir at 30°C), no humidifier | 18.2 | 1.7 |
| Heated tube and humidifier, both on Auto | 45.2 | 0.7 |
| Heated tube at 30°C and humidifier at 8 | 59 | 0.5 |
| AirSense 11, typical (ResMed user guide) | 56.1 | 0.5 |
AirSense 10 draw is ResMed's battery-guide figure in amps at 12 V DC × 12 (ResMed battery guide). Nights = usable energy ÷ (draw) ÷ 8 hours. Other pressures and machines: CPAP calculator.
Sump pumps
Start-up allows 3 × running watts, the top of Whirlpool's two-to-three-times range for motors. The example storm pace is 6 cycles an hour of 15 seconds each; time your own pump during rain.
| Pump | Running, W | Start-up, W | Pumping nonstop | At 6 cycles an hour | Check |
|---|---|---|---|---|---|
| Zoeller M53, 3/10 HP | 1,116 | 3,346 | — | — | Too much: needs 1,116 W |
| Zoeller M98, 1/2 HP | 1,081 | 3,243 | — | — | Too much: needs 1,081 W |
| Superior Pump 92341, 1/3 HP | 492 | 1,476 | — | — | May not start: needs 1,476 W |
| Wayne CDU790, 1/3 HP | 1,140 | 3,420 | — | — | Too much: needs 1,140 W |
| Wayne CDU980E, 3/4 HP | 1,176 | 3,528 | — | — | Too much: needs 1,176 W |
Running watts are each pump's rated amps × volts, so they err high. Sump pump calculator.
Charge time and solar refill
| Method | Time | Maker's figure |
|---|---|---|
| Wall outlet, standard | 1 h | AC input 380 W, 0–100% in 60 min |
| Wall outlet, fastest mode | none listed | No faster mode listed |
| Car's 12 V socket | 3.3 h | Car input 220 W at 11–55 V, 0–100% in 3.3 hr |
"est." = worked out from input watts × 0.74 (wall) or 0.89 (car), the medians makers' own watts-and-time figures imply. See Methods.
| State | Worst-month sun hours | Days, worst month | Days, year average |
|---|---|---|---|
| CaliforniaLos Angeles | 4.61 (Dec) | 0.4 | 0.3 |
| TexasHouston | 3.76 (Dec) | 0.5 | 0.3 |
| FloridaJacksonville | 4.23 (Dec) | 0.4 | 0.3 |
| New YorkNew York City | 2.88 (Dec) | 0.6 | 0.4 |
| ArizonaPhoenix | 5.43 (Dec) | 0.3 | 0.3 |
| WashingtonSeattle | 1.59 (Dec) | 1.1 | 0.4 |
Into the battery per sun hour = 220 W × (1 − 14% losses) × 0.89 = 168 W. Sun hours: NREL (now NLR) PVWatts v8 for each state's largest city. All 50 states and DC: peak sun hours by state.
Compare
Next size up: EcoFlow DELTA 3 Plus (1,024 Wh). All 9 stations side by side: station specs.