How long will the EcoFlow DELTA Pro 3 run a refrigerator?

About 84 h (3.5 days) for a median ENERGY STAR top-freezer fridge (363 kWh a year, 41.4 W average), 54 h (2.2 days) for a bottom-freezer (566 kWh) and 47.6 h for a side-by-side (640 kWh). That uses 3,481.6 Wh of usable energy: 4,096 Wh × 100% usable × 85% efficiency. Its output covers a modern fridge's compressor (160 W running, 320 W start-up) and defrost heater (425 W).

How many nights will the EcoFlow DELTA Pro 3 run a CPAP?

About 39 eight-hour nights for a ResMed AirSense 10 at 10 cmH2O with no humidifier (11.2 W, from ResMed's battery table), or 15.8 with the humidifier at 4 (27.6 W). Ask your equipment supplier before relying on a power station for a medical device.

How long does the EcoFlow DELTA Pro 3 take to charge?

About 3.1 h from a wall outlet, worked out from its 1,800 W input, and about 48 h from a car's 12 V socket at 96 W. Its solar input takes up to 2,600 W.

Can the EcoFlow DELTA Pro 3 run a sump pump?

It can start 5 of the 5 pumps we checked, allowing three times running watts to start. Zoeller M53, 3/10 HP: yes; Zoeller M98, 1/2 HP: yes; Superior Pump 92341, 1/3 HP: yes; Wayne CDU790, 1/3 HP: yes; Wayne CDU980E, 3/4 HP: yes.

How long will the EcoFlow DELTA Pro 3 run a fridge, CPAP or sump pump?

4,096 Wh, 4,000 W AC output, 8,000 W surge. After conversion losses about 3,482 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: $2,799 (list $3,299)

The short answer

Top-freezer fridge, ENERGY STAR median (41.4 W average)84 h (3.5 days)
Side-by-side fridge, ENERGY STAR median (73.1 W average)47.6 h
CPAP, AirSense 10 at 10 cmH2O, no humidifier (11.2 W)39 nights
Internet gateway (17 W) plus three LED bulbs (26.4 W)80 h (3.3 days)
Sump pumps it can start, of 5 checked5
Wall outlet, empty to full3.1 h est.

Try your own list: runtime calculator with the DELTA Pro 3 · outage sizing · charge time · solar recharge

Runtime for common appliances

Hours = 4,096 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 4,000 W output with the appliance's peak running draw (a fridge's defrost heater counts) and its 8,000 W surge with the start-up draw.

EcoFlow DELTA Pro 3 against 16 appliances
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	84 h (3.5 days)	425	320	Runs it
Refrigerator, bottom freezerENERGY STAR certified-product data (data.energystar.gov)	64.6average, compressor cycling included	54 h (2.2 days)	425	320	Runs it
Refrigerator, side by sideENERGY STAR certified-product data (data.energystar.gov)	73.1average, compressor cycling included	47.6 h	425	320	Runs it
Upright freezerENERGY STAR certified-product data (data.energystar.gov)	50average, compressor cycling included	70 h (2.9 days)	425	320	Runs it
Chest freezerENERGY STAR certified-product data (data.energystar.gov)	24.9average, compressor cycling included	140 h (5.8 days)	160	320	Runs it
Microwave ovenWhirlpool, Generator Usage with Appliances	1,100running	3.2 h	1,100	1,100	Runs it
CPAP (ResMed AirSense 11) medicalResMed AirSense 11 user guide, technical specifications	56.1average	62 h (2.6 days)	73.2	73.2	Runs it
Oxygen concentrator (Philips EverFlo) medicalPhilips Respironics EverFlo brochure	350running	9.9 h	350	350	Runs it
Sump pump, 3/10 HP (Zoeller M53)Zoeller Model M53 spec page	1,116running	3.1 h	1,116	3,347	Runs it
Window AC, 8,000 BTUENERGY STAR certified-product data (data.energystar.gov)	533running	6.5 h	533	1,066	Runs it
Space heater (Lasko 754200)Lasko 754200 product page	1,500running	2.3 h	1,500	1,500	Runs it
Ceiling fan, 50 to 54 in, highENERGY STAR certified-product data (data.energystar.gov)	28.6running	122 h (5.1 days)	28.6	28.6	Runs it
TV, 55 inENERGY STAR certified-product data (data.energystar.gov)	96.5running	36.1 h	96.5	96.5	Runs it
Internet gateway (Xfinity XB8)CableLabs Energy Reporting, Comcast small network equipment	17running	205 h (8.5 days)	17	17	Runs it
LED bulb, 60 W equivalent (Feit OM60DM)Feit Electric OM60DM/927CA product page	8.8running	396 h (16.5 days)	8.8	8.8	Runs it
Phone charger (Apple 20W USB-C)Apple 20W USB-C Power Adapter	20running	174 h (7.3 days)	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.

Eight-hour nights at 10 cmH2O, through the AC outlet
AirSense setup	Draw, W	Nights
No humidifier, SlimLine tubing	11.2	39
Humidifier at 4, SlimLine tubing	27.6	15.8
Humidifier at 8, SlimLine tubing	43.9	9.9
Heated tube (ClimateLineAir at 30°C), no humidifier	18.2	23.9
Heated tube and humidifier, both on Auto	45.2	9.6
Heated tube at 30°C and humidifier at 8	59	7.4
AirSense 11, typical (ResMed user guide)	56.1	7.8

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.

EcoFlow DELTA Pro 3 against 5 sump pumps
Pump	Running, W	Start-up, W	Pumping nonstop	At 6 cycles an hour	Check
Zoeller M53, 3/10 HP	1,116	3,346	3.1 h	125 h (5.2 days)	Runs it
Zoeller M98, 1/2 HP	1,081	3,243	3.2 h	129 h (5.4 days)	Runs it
Superior Pump 92341, 1/3 HP	492	1,476	7.1 h	283 h (11.8 days)	Runs it
Wayne CDU790, 1/3 HP	1,140	3,420	3.1 h	122 h (5.1 days)	Runs it
Wayne CDU980E, 3/4 HP	1,176	3,528	3 h	118 h (4.9 days)	Runs it

Running watts are each pump's rated amps × volts, so they err high. Sump pump calculator.

Charge time and solar refill

Empty to full, from EcoFlow's published figures
Method	Time	Maker's figure
Wall outlet, standard	3.1 h est.	AC charging input 100–240 V, 15 A; at a 120 V outlet that is 1,800 W. EcoFlow's 0–80% in 50 minutes claim isn't tied to a 120 V outlet, so no time is used
Wall outlet, fastest mode	none listed	No faster mode listed
Car's 12 V socket	48 h est.	Car charging input 12 V ⎓ 8 A max (96 W)

"est." = worked out from input watts × 0.74 (wall) or 0.89 (car), the medians makers' own watts-and-time figures imply. See Methods.

Days of sun to fill from empty with 2,600 W of panels (its solar limit)
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	0.4
FloridaJacksonville	4.23 (Dec)	0.5	0.4
New YorkNew York City	2.88 (Dec)	0.7	0.5
ArizonaPhoenix	5.43 (Dec)	0.4	0.3
WashingtonSeattle	1.59 (Dec)	1.3	0.5

Into the battery per sun hour = 2,600 W × (1 − 14% losses) × 0.89 = 1,982 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 down: Anker SOLIX F3800 Plus (3,840 Wh). All 9 stations side by side: station specs.