EcoFlow DELTA 3 Classic Portable Power Station (1024Wh): Specs…

What it can run, and for how long

A power station is a battery with an inverter: it stores energy as watt-hours (Wh) and delivers it as AC watts (W). The EcoFlow DELTA 3 Classic Portable Power Station (1024Wh) stores 1,024 Wh, of which about 870 Wh reaches your appliances after losses, and its inverter limits the load to 1,800 W at a time.

Appliances this unit can run, with estimated runtime on a full charge
Appliance (typical)	Running / starting watts	Can it run it?	Runtime on a full charge
Refrigerator (modern, about 18–22 cu ft)	150 W / 600 W start	Yes	14.5 h	18%
Chest freezer (about 7 cu ft)	100 W / 400 W start	Yes	24.9 h	31%
Sump pump (1/3 hp)	800 W / 1,500 W start	Yes	7.3 h	9%
Well pump (1/2 hp)	1,000 W / 2,100 W start	Check surge	4.4 h	6%
Gas furnace blower	750 W / 1,500 W start	Yes	2.3 h	3%
Window air conditioner (5,000–8,000 BTU)	600 W / 1,800 W start	Yes	2.4 h	3%
CPAP with heated humidifier	70 W	Yes	12.4 h	16%
Home oxygen concentrator	300 W	Yes	2.9 h	4%
Wi-Fi router and modem	25 W	Yes	34.8 h	44%
LED television (55 in)	100 W	Yes	8.7 h	11%
LED lighting (10 bulbs)	100 W	Yes	8.7 h	11%
Laptop and charger	60 W	Yes	14.5 h	18%
Phones and tablets charging (4)	40 W	Yes	21.8 h	28%
Ceiling or box fan	75 W / 150 W start	Yes	11.6 h	15%
Microwave oven (1,000 W cooking)	1,500 W	Yes	5.8 h	7%
Coffee maker	900 W	Yes	9.7 h	12%
Garage door opener (1/2 hp)	550 W / 1,100 W start	Yes	3.3 days	100%
Washing machine	500 W / 1,300 W start	Yes	4.4 h	6%
Electric space heater (1,500 W)	1,500 W	Yes	35 min	2%
Central air conditioner (3-ton)	3,500 W / 10,500 W start	No	—

Wattstanding calculationWattstanding calculation — runtime = capacity (Wh) × 85% ÷ (running watts × duty cycle). The 85% covers inverter and conversion losses; duty cycle is the share of time the appliance actually draws power. Appliance wattages are typical planning values, not measurements — read the nameplate on your own appliance. Real runtime also depends on temperature, battery age and the maker's inverter efficiency.

Outage scenarios
Scenario	Running watts	Starting watts needed	Average draw	Fits	Estimated runtime
Essentials: refrigerator, router, lights, phones	315 W	765 W	225 W	Fits	3.9 h
Essentials + sump pump	1,115 W	1,815 W	345 W	Check surge	2.5 h
Essentials + furnace blower + TV	1,165 W	1,915 W	700 W	Check surge	1.2 h
Essentials + window air conditioner	915 W	2,115 W	585 W	Check surge	1.5 h

Practical noteCooling appliances cycle on and off, so a refrigerator draws far less than its running watts over a day, but each start needs a brief surge. If a load's starting watts exceed the maker's surge rating, the inverter can shut down.

Recharging

Recharge time depends on the source. Solar numbers below are our calculation for the panel wattage shown, assuming 75% real-world output and the approximate annual-average peak sun hours for each region; winter and cloud cover cut them sharply.

Days of sun to refill from empty
Panel total	Basis	Florida and the Gulf Coast	Texas	California
100 W	—	2.6 sunny days	2.7 sunny days	2.5 sunny days
200 W	—	1.3 sunny days	1.4 sunny days	1.2 sunny days
400 W	—	0.7 sunny days	0.7 sunny days	0.6 sunny days

AC wall charging up to 1,400 W (as stated) — about 0.7 h from empty at that rate before losses

See the solar recharge calculator for your own panel size and sun hours.

Connecting it to a home

You can plug appliances straight into the unit's outlets. Powering a home's circuits is different: it needs a properly rated transfer switch or the maker's home-integration hardware, installed by a licensed electrician.

SafetyNever plug a generator or battery system into a wall outlet to power the house ("backfeeding"): it can send electricity back into the utility lines and injure line workers, and it can start fires. Connecting a generator to a home's wiring is a job for a licensed electrician, with the permit and inspection your local code requires. Wattstanding does not give wiring instructions.

If you plan to connect it to the house, compare it with the equipment in our transfer switch and hookup library and read the whole-house guide.

Fit check before you buy

Checks to make against your loads and your plan before ordering.

✓ Required? Check firsti Good to know

✓Loads fit the outputAdd up the running watts of everything you will run together; keep the total under 1,800 W.
?Starting surgeNo surge rating was stated in the sources we read; confirm with the maker before running motors.
?Outlets and voltage120V~60Hz 1800W total
iRecharge planDecide how you will refill it: wall power, solar or a generator, within its stated input limits.
iWeight26.7 lb as stated — plan how you will move it.

Specifications

Each figure is labelled with where it comes from. Numbered references link to the source list below.

Manufacturer storeRetailer listingWattstanding calculationNot verified

Published specifications

Battery capacity	1,024 Wh[S1]	Manufacturer store
Continuous AC output	1,800 W[S1]	Manufacturer store
Battery chemistry	LiFePO4[S1]	Manufacturer store
AC outlets	120V~60Hz 1800W total[S1]	Manufacturer store
USB-C ports	USB-C1:5/9/12/15V=3A, 20V=5A, 100W Max[S1]	Manufacturer store
UPS / switchover	10ms[S1]	Manufacturer store
AC charging input	1,400 W[S1]	Manufacturer store
Weight	26.7 lb[S1]	Manufacturer store
Dimensions	398mm×200mm×283mm[S1]	Manufacturer store
Warranty	5-Year Warranty[S1]	Manufacturer store

Wattstanding calculations

Usable energy (85% of capacity)	870 Wh	Wattstanding calculation
Refrigerator runtime (typical)	14.5 h	Wattstanding calculation
Price per kWh of storage	$487	Wattstanding calculation

Limitations to weigh

Specifications are the maker's or seller's; Wattstanding has not tested this product.
Runtime figures are calculations with stated assumptions, not measurements.
Prices change; confirm the price, stock and what is included before ordering.
No surge rating was found in the sources we read.

Alternatives worth comparing

BLUETTI Elite 100 V2 Bio-based1,024 Wh, 1,800 W; same price

Anker SOLIX C1000 Gen 2 Portable Power Station - 1,024Wh (A17631A1)1,024 Wh, 2,000 W; same price

EcoFlow DELTA 3 Portable Power Station1,024 Wh, 1,800 W; $100 more

Dabbsson DBS1000 Pro Portable Power Station1,024 Wh, 2,400 W; $120 more

Where to buy

Our link opens this exact product page. Prices and stock change; check before you order.

$499EcoFlow listed price (base model) · seen 30 Sep 2026

View at EcoFlow Check price on Amazon

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Questions buyers ask

How long will the EcoFlow DELTA 3 Classic Portable Power Station (1024Wh) run a refrigerator?

About 14.5 h on a full charge by our calculation (typical modern refrigerator, 40% duty cycle, 85% efficiency). Your refrigerator's nameplate and its door-opening habits change this.

Can the EcoFlow DELTA 3 Classic Portable Power Station (1024Wh) run a sump pump or well pump?

Sump pump (1/3 hp): yes. Well pump (1/2 hp): check the starting watts. These use typical wattages; read the pump's nameplate.

Can I use it to power my whole house?

Not by plugging the house into it. With 1,024 Wh it holds about 3% of one day's energy for a home that uses 30 kWh a day (an example figure — check your own bill), and connecting it to home wiring needs a licensed electrician.

Where can I buy the EcoFlow DELTA 3 Classic Portable Power Station (1024Wh)?

1 seller list it: EcoFlow.

Sources and verification

EcoFlow — EcoFlow DELTA 3 Classic Portable Power Station (1024Wh) — product page and specifications Retrieved 30 Sep 2026

Wattstanding has not tested this product hands-on. This reference is compiled from the sources above; our calculations are labelled and show their working. Electrical work belongs to a licensed electrician. Last verified 30 Sep 2026. How we work

EcoFlow DELTA 3 Classic Portable Power Station (1024Wh)

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