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On this page 9 sections
Our verdict · EcoFlow
The Delta 3 Plus formula with half the solar input
Charges from the wall in under an hour, switches over in under 10 ms and grows to 5 kWh. It shares most of its specs with the Delta 3 Plus; the big difference is half the solar input.
- Capacity
- 1,024 Wh
- AC output
- 1,800 W
- Wall charge
- 56 min
- Weight
- 27.6 lb
Best for
Home backup and weekend trips where you'll mostly recharge from the wall and want room to add batteries later.
Skip it if
You'll rely on solar (the Delta 3 Plus takes twice as much), need more than 1,800 W, or want the lightest unit.
- Full wall charge in about 56 minutes
- Under 10 ms UPS switchover
- Expandable to 5 kWh
- Six AC outlets
- 500 W solar input
- 1,800 W output
- About 27.6 lb
Rating breakdown (mid-size (1 to 1.5 kwh) class)
| Criterion | Weight | Score | Based on |
|---|---|---|---|
| Wall charging speed | 20% | 9.7 | 1,500 W input |
| AC output | 20% | 6.3 | 1,800 W |
| Solar input | 10% | 4.8 | 500 W |
| Backup switchover | 15% | 10.0 | <10 ms |
| Portability | 10% | 6.8 | 37 Wh/lb |
| Expandability | 10% | 9.9 | to 5,000 Wh |
| Battery life & warranty | 15% | 10.0 | 5-year warranty, 4,000+ cycles |
| Capacity (Wh) | 1024 |
|---|---|
| Battery chemistry | LiFePO4 |
| Rated cycle life | 4,000 cycles to 80% |
| AC output, continuous (W) | 1800 |
| AC output, surge (W) | 3600 |
| AC charge time | 56 min |
| Max AC charging input (W) | 1500 |
| Max solar input (W) | 500 |
| Solar input voltage range | 11–60 V |
| UPS switchover (ms) | <10 |
| Weight (lb) | 27.6 |
| Expandable to (Wh) | 5000 |
| Warranty (years) | 5 |
Key specs at a glance
What the numbers mean in practice
- 1,024 Wh capacity: a mid-size battery. Enough to keep a fridge and router going for most of a night, or a CPAP for several nights on DC.
- 1,800 W continuous, 3,600 W surge: runs most single kitchen appliances, but not several at once.
- LiFePO4, 4,000 cycles to 80%: the long-life chemistry. See LiFePO4 vs lithium-ion.
- About 27.6 lb: portable, but a two-hand carry.
- Expandable to 5 kWh with EcoFlow extra batteries.
- 5-year warranty.
Spec sheets are easy to misread; watts vs watt-hours explains which number answers which question.
Charging speed
Fast from the wall, average from the sun
The Delta 3 takes 1,500 W from the wall for a full charge in about 56 minutes, among the fastest in its class. That matters most when you get a short window of grid power during a long outage.
Solar input is 500 W through one input (11–60 V), about 2.5–3 hours to full in strong sun with enough panels. That's half the 1,000 W of the EcoFlow Delta 3 Plus. See what size solar panel you need.
Capacity and real runtime
How long it actually keeps things running
Estimated runtimes on the Delta 3
- CPAP, no humidifier, DC cord27 h
- CPAP with humidifier, AC11 h
- Fridge + Wi-Fi router11 h
A fridge and router running through the night is realistic; a full day of fridge backup needs an extra battery or some solar. Try your own devices in the runtime calculator.
Output: what it can and can't run
Solid for one appliance at a time
The 1,800 W continuous rating covers most single household appliances across its 6 AC outlets, and the 3,600 W surge helps start a fridge or small pump. X-Boost lets simple heating appliances, like kettles, run at up to 2,200 W by lowering their power. Two 100 W USB-C ports charge laptops at full speed.
What it won't do well: run a microwave and a coffee maker together, power a space heater for long, or start larger motors like well pumps. The Anker SOLIX C1000 Gen 2 offers 2,000 W in the same capacity.
Backup (UPS) and app
Fast switchover for computers and routers
The Delta 3 switches to battery in under 10 ms when the grid drops, fast enough for most computers, routers and networking gear to keep running. The EcoFlow app lets you monitor output and set charge limits remotely.
Noise
Quiet at light loads
It runs at under 30 dB at 600 W and under 40 dB at 1,200 W. Expect the fans to get louder when charging at full speed; if it sits in a bedroom, lower the charging speed in the app.
How it compares
Against similar 1 kWh stations
| Spec | EcoFlow Delta 3 | EcoFlow Delta 3 Plus | Anker SOLIX C1000 Gen 2 |
|---|---|---|---|
| Capacity (Wh) | 1024 | 1024 | 1024 |
| AC output, continuous (W) | 1800 | 1800 | 2000 |
| AC charge time | 56 min | 56 min | 49 min (UltraFast) |
| Max solar input (W) | 500 | 1000 | 600 |
| Weight (lb) | 27.6 | 27.6 | 24.9 |
| Warranty (years) | 5 | 5 | 5 |
| Price | Check price | Check price | Check price |
- EcoFlow Delta 3 Plus: the same capacity, output, charging speed and expansion, but 1,000 W of solar across two inputs.
- Anker SOLIX C1000 Gen 2: same capacity, more output (2,000 W), 600 W solar and about 3 lb lighter, but not expandable.
The Delta 3's edge is fast wall charging plus room to grow. Choose the Plus if you'll charge from solar a lot.
Who should buy it
And who should look elsewhere
Good fit: essentials backup (fridge, router, lights, CPAP); a home office that needs a fast UPS; weekend trips where you'll recharge from the wall; anyone who wants to add batteries later.
Look elsewhere if: you'll rely on solar (choose the Delta 3 Plus), need more output (the C1000 Gen 2 has 2,000 W), or want the lightest 1 kWh station (the Jackery Explorer 1000 v2 is 23.8 lb).
In our buying guides, the Delta 3 is best value overall in Best Value Portable Power Stations.
FAQ
Quick answers to common questions
What's the difference between the Delta 3 and the Delta 3 Plus?
Mainly solar input: 500 W on the Delta 3 and 1,000 W on the Delta 3 Plus. Capacity, output, wall charging speed, switchover and expansion are the same.
How long will the Delta 3 run a refrigerator?
About 10–11 hours for a typical fridge plus a router, or a little longer for the fridge alone. Real results depend on your fridge's average draw.
Can the Delta 3 be used as a UPS?
Yes. It switches over in under 10 ms, fast enough for most computers and routers.
Is the Delta 3 expandable?
Yes, up to 5 kWh with compatible EcoFlow extra batteries.
What warranty does it have?
Five years.
