EcoFlow DELTA 3 Classic: what it runs and for how long
A 1,024 Wh lithium iron phosphate station with 1,800 W of output (3,600 W surge). At the default 85% efficiency that is 870 Wh you can use.
Same capacity and output as the EcoFlow DELTA 3. It differs in weight (26.7 lb here, 27.6 lb there), price ($599 here, $699 there) and expansion (none here, up to 5,000 Wh there).
Same capacity and output as the EcoFlow DELTA 3 Plus. It differs in solar input (500 W here, 1,000 W there), USB-C output (100 W here, 140 W there), weight (26.7 lb here, 27.6 lb there), price ($599 here, $799 there) and expansion (none here, up to 5,000 Wh there).
Updated
Key numbers
1,024Wh
Rated capacity
870Wh
Usable at 85%, 1,024 × 0.85
1,800W
Continuous output
3,600W
Surge
26.7lb
Weight, 12.1 kg
$599
List price, $0.58 per Wh, as of October 2026
Enough Watts may earn a commission when you buy through links on this page. It never changes the math or the ranking.
What it runs
It powers all 16 common appliances below, each on its own. A modern full size refrigerator runs about 16.1 h on a full charge.
| Appliance | Watts | Can it power it | On a full charge |
|---|---|---|---|
| Phone charging | 20 W | Runs it | 43.5 h |
| Laptop (while charging) | 65 W | Runs it | 13.4 h |
| Wi-Fi router and modemestimate | 28 W | Runs it | 31.1 h |
| LED bulb, 60 W equivalent (800 lumens) | 8.5 W | Runs it | 4.3 days |
| TV, 55 inch LED (LCD) | 82 W | Runs it | 10.6 h |
| CPAP machine (no humidifier) | 11 W | Runs it | 3.3 days |
| Oxygen concentrator (home, stationary) | 290 W | Runs it | 3.0 hCounts the running watts for every hour you enter.Starting watts not published; motors often need 2 to 3 times their running watts to start. |
| Box fan (20 inch) | 125 W | Runs it | 7.0 hCounts the running watts for every hour you enter.Starting watts not published; motors often need 2 to 3 times their running watts to start. |
| Refrigerator (modern, full size) | 275 W1,000 W to start | Runs it | 16.1 h |
| Chest freezer | 300 W750 W to start | Runs it | 26.1 h |
| Sump pump (1/2 HP) | 925 W1,725 W to start | Runs it | 56 minAssumes the motor runs the whole time; real use is often less. |
| Drip coffee maker | 900 W | Runs it | 58 min of use |
| Microwave oven (1,000 W cooking power) | 1,530 W | Runs it | 34 min of use |
| Electric kettle | 1,500 W | Runs it | 35 min of use |
| Window air conditioner (5,000 BTU) | 525 W1,050 W to start | Runs it | 1.7 hAssumes the motor runs the whole time; real use is often less. |
| Electric space heater (1,500 W) | 1,500 W | Runs it | 35 min |
Running time is usable watt hours divided by the appliance's average draw, with nothing else plugged in. Loads used for minutes a day show minutes of use. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.
Explained in: Why you get less than the rated capacity, Starting watts explained and How to read an appliance label for watts.
Will it run your appliance
Pick any of the appliance types in the data to see whether the EcoFlow DELTA 3 Classic powers it and for how long.
Recharging
From the wall
Maximum AC charging input: 1,400 W.
The maker states these wall charging times:
- 0 to 80% in 45 min
- 0 to 100% in 1 h
From solar
It takes up to 500 W of solar. Worked at 4 peak sun hours, counting 75% of the panel rating to allow for heat, angle and controller losses:
- 200 W of panels × 4 h of sun × 0.75 = 600 Wh a day. From empty to full: 1,024 ÷ (200 × 0.75) = 6.8 hours of sun.
- 500 W of panels × 4 h of sun × 0.75 = 1,500 Wh a day. From empty to full: 1,024 ÷ (500 × 0.75) = 2.7 hours of sun.
Work out other panel sizes for the EcoFlow DELTA 3 Classic
Explained in: How much solar to recharge a power station.
From a car
Car charging input: not published.
Expansion and backup mode
It takes no expansion batteries, so the capacity stays at 1,024 Wh.
Backup (UPS) mode: the maker states a switchover of 20 ms or faster.
X-Boost can run this at up to 2,600 W by lowering the voltage. That suits heaters and kettles, not motors or electronics. The verdicts on this site never count it as output.
Explained in: Power station backup mode (UPS) explained.
Full specifications
- Rated capacity
- 1,024 Wh
- Battery chemistry
- LiFePO4 (lithium iron phosphate)
- Cycle life
- Not published
- Continuous AC output
- 1,800 W
- Surge rating
- 3,600 W
- Boost mode
- X-Boost, up to 2,600 W for resistive loads
- AC voltage
- 120 V
- USB-C
- 2 ports, up to 100 W
- USB-A
- 1 port
- Wall charging input
- up to 1,400 W
- Solar input
- up to 500 W
- Expansion batteries
- no
- Backup (UPS) switchover
- 20 ms or faster
- Weight
- 26.7 lb (12.1 kg)
- Size (box)
- 15.7 × 11.1 × 7.9 in398 × 283 × 200 mm, largest side first
- Charges down to
- 32 °F (0 °C)
- Runs down to
- 14 °F (-10 °C)
- Noise
- 30 dBas the maker publishes it; conditions differ between makers
- App connection
- Wi-Fi, Bluetooth
- Warranty
- 3 years
Battery chemistry: LiFePO4 vs NMC batteries in power stations.
Price
$599 list price as of October 2026, the regular price on the maker's US store. That is $0.58 per Wh of rated capacity. Sale prices change often and are not stored; the maker's page shows today's price and stock.
EcoFlow's page for the DELTA 3 Classic (opens in a new tab)
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Similar stations
The nearest capacities in the data, from any brand.
| Power station | Capacity | Output | Surge | Weight | Price |
|---|---|---|---|---|---|
| Anker SOLIX C1000 Gen 2 | 1,024 Wh | 2,000 W | 3,000 W | 24.9 lb (11.3 kg) | $599.99$0.59 per Wh |
| BLUETTI Elite 100 V2 | 1,024 Wh | 1,800 W | 3,600 W | 25.4 lb (11.5 kg) | $499$0.49 per Wh |
| DJI Power 1000 | 1,024 Wh | 2,200 W | 4,400 W | 28.7 lb (13 kg) | $999$0.98 per Wh |
| EcoFlow DELTA 3 | 1,024 Wh | 1,800 W | 3,600 W | 27.6 lb (12.5 kg) | $699$0.68 per Wh |
All 11 EcoFlow power stations · Compare all 54 power stations
Sources
Researched from these pages, then checked against them a second time. The check corrected at least one figure.
- DELTA 3 Classic Portable Power Station | EcoFlow US maker product page, checked
- EcoFlow DELTA 3 Classic (1024Wh) Portable Power Station | EcoFlow UK maker store, checked
- EcoFlow DELTA 3 Classic (1024Wh) Portable Power Station | EcoFlow EU maker store, checked
- EcoFlow DELTA 3 Classic (1024Wh) Portable Power Stations | EcoFlow US maker product page, checked
We read published specifications and do the math; we do not test products. The methodology states every formula on this page.