EcoFlow DELTA 3 Classic: what it can run, and for how long

EcoFlow DELTA 3 Classic: 1,024 Wh, 1,800 W continuous (3,600 W surge), $599 list price. About 870 Wh reaches your appliances (our 85% estimate).

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Specs checked:

Specifications

Capacity
1,024 Wh source
Continuous AC output
1,800 W source
Surge AC output
3,600 W source
AC outlets
6 source
Battery chemistry
LFP (lithium iron phosphate) source
Wall charging input
1,400 W source
Solar input
500 W source
UPS switchover
10 ms source
Weight
26.7 lb source
Warranty
3 years, 5 if you register source
List price
$599 (regular price on EcoFlow's US store, checked 2026-11-03) source

See it on EcoFlow

Not stated on EcoFlow's pages, or not clear enough for us to use: solar input voltage, rated cycles and expandable capacity.

Cheaper with at least the same capacity and output

How long it runs one appliance

Each row is that appliance alone. 34 of the 35 appliances in our list can run on it; 1 can't (too many watts to run or start, or they need 240 V). For several appliances at once, use the planner.

ApplianceRunning / startingRuns it?Runtime
Refrigerator (full-size)150 to 400 W / 800 to 1,200 WYes21 hours (cycling)
Chest freezer100 to 500 W / 500 to 1,000 WYes35 hours (cycling)
Upright freezer100 to 500 W / 500 to 1,000 WYes19 hours (cycling)
Mini fridge50 to 100 W / 400 to 600 WYes8.7 hours nonstop
Microwave600 to 1,200 WYes44 minutes nonstop
Coffee maker (4-cup)600 WYes1.5 hours nonstop
Electric kettle (1.7 L)1,500 WYes35 minutes nonstop
Toaster1,200 WYes44 minutes nonstop
Induction burner (single, portable)1,200 to 1,800 WYes29 minutes nonstop
Sump pump (1/3 HP)500 to 800 W / 1,000 to 1,600 WYes1.1 hours nonstop
Sump pump (1/2 HP)800 to 1,050 W / 1,300 to 2,150 WYes50 minutes nonstop
Well pump (1/2 HP)750 to 1,000 W / 1,500 to 2,000 WYes52 minutes nonstop
Well pump (1 HP)1,000 to 2,000 W / 2,000 to 4,000 WNo: no 240 V output; 1,800 W continuous, less than the 2,000 W your list runs at once; 3,600 W surge, less than the 4,000 W needed to start the well pump (1 HP)-
Window air conditioner (5,000 BTU)450 to 600 W / 900 to 1,200 WYes1.5 hours nonstop
Window air conditioner (10,000 BTU)900 to 1,200 W / 1,800 to 2,400 WYes44 minutes nonstop
Space heater (electric)750 to 1,500 WYes35 minutes nonstop
Furnace fan / blower (gas furnace, 1/2 HP)300 to 800 W / 800 to 1,600 WYes1.1 hours nonstop
Ceiling fan15 to 75 WYes12 hours nonstop
Box fan50 to 200 WYes4.4 hours nonstop
Wi-Fi router + modem10 to 20 WYes44 hours nonstop
Laptop (charging / in use)20 to 100 WYes8.7 hours nonstop
Desktop computer600 to 800 WYes1.1 hours nonstop
LED TV (32" to 55")80 to 400 WYes2.2 hours nonstop
Phone charging10 WYes3.6 days nonstop
Satellite internet (Starlink Standard dish)75 to 100 WYes8.7 hours nonstop
LED light bulb8 to 15 WYes2.4 days nonstop
Oxygen concentrator (home, 5 L/min)310 WYes2.8 hours nonstop
Washing machine500 to 1,000 W / 1,000 to 2,300 WYes52 minutes nonstop
Circular saw (7-1/4")1,200 to 1,800 W / 2,400 to 3,600 WYes29 minutes nonstop
Garage door opener720 W / 1,420 WYes1.2 hours nonstop
Hair dryer1,800 W / 1,900 WYes29 minutes nonstop
Aquarium heater (15-40 gallon tank)100 WYes8.7 hours nonstop
CPAP: ResMed AirSense 1156 WYes16 hours nonstop
CPAP: ResMed AirSense 1053 WYes16 hours nonstop
CPAP: ResMed AirMini6 WYes5.8 days nonstop

Runtime = 870 Wh usable (1,024 Wh x 85%) / the appliance's draw: its running watts nonstop, or its average over a day for appliances that cycle on and off. Appliance figures and their sources are on our methodology page.

Sources (EcoFlow): EcoFlow DELTA 3 Classic product page (US store) (checked 2026-11-03); EcoFlow DELTA 3 Classic specs (ecoflow.com/us) (checked 2026-11-03); EcoFlow DELTA 3 Classic product data (US store, prices) (checked 2026-11-03)