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On this page 9 sections
Our verdict · EcoFlow
A fast-charging, quick-switching 1 kWh station that's easy to grow
Recharges from the wall in under an hour, switches over in under 10 ms and can grow to 5 kWh with extra batteries. Its 1,800 W output is solid rather than class-leading.
- Capacity
- 1,024 Wh
- AC output
- 1,800 W
- Wall charge
- 56 min
- Weight
- 27.6 lb
Best for
Home backup for essentials, weekend trips and home offices that want a fast-charging, quick-switching 1 kWh station.
Skip it if
You need to run several big appliances at once, want the lightest possible unit, or need the most output in this size class.
- Full wall charge in about 56 minutes
- Under 10 ms UPS switchover
- Up to 1,000 W of solar input
- Expandable to 5 kWh
- 1,800 W output, not the highest in its class
- About 27.6 lb
- Fans run when charging fast or under heavy loads
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% | 10.0 | 1,000 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) | 1000 |
| Solar input voltage range | 11–60 V (2 × 500 W inputs) |
| 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 (coffee maker, microwave, kettle), 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 you'll carry it with two hands.
- Expandable to 5 kWh with EcoFlow extra batteries.
Spec sheets are easy to misread; watts vs watt-hours explains which number answers which question.
Charging speed
Its standout feature
The Delta 3 Plus 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.
It also accepts up to 1,000 W of solar across two 500 W inputs (11–60 V each), filling the battery in about 70 minutes in strong sun, and 800 W of car charging through EcoFlow's alternator charger. It also pairs with EcoFlow's Smart Generator; see power station vs generator.
Capacity and real runtime
How long it actually keeps things running
Estimated runtimes on the Delta 3 Plus
- 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 either 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, and the 3,600 W surge helps start a fridge or small pump. X-Boost lets some simple heating appliances, like kettles, run at up to 2,200 W by lowering their power, which isn't the same as extra continuous output.
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. Some competitors in this size class, such as the Anker SOLIX C1000 Gen 2, offer 2,000 W continuous.
Backup (UPS) and app
Fast switchover for computers and routers
The Delta 3 Plus 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
The fans stay off below 600 W, with around 30 dB at light loads and about 40 dB near 1,200 W. Expect them to run when charging at full speed or under heavy loads; 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 Plus | Anker SOLIX C1000 Gen 2 | Bluetti AC180 |
|---|---|---|---|
| Capacity (Wh) | 1024 | 1024 | 1152 |
| AC output, continuous (W) | 1800 | 2000 | 1800 |
| AC charge time | 56 min | 49 min (UltraFast) | 80% in 45 min |
| Max solar input (W) | 1000 | 600 | 500 |
| Weight (lb) | 27.6 | 24.9 | 35.3 |
| Warranty (years) | 5 | 5 | 5 |
| Price | Check price | Check price | Check price |
- Anker SOLIX C1000 Gen 2: same capacity, more continuous output (2,000 W) and a faster full charge (49 min in UltraFast mode), but not expandable.
- Bluetti AC180: slightly more capacity (1,152 Wh) and 1,800 W, but slower solar input (500 W) and heavier (35.3 lb).
- EcoFlow Delta 3: the same station with half the solar input (500 W); worth it if you'll mostly charge from the wall.
The Delta 3 Plus's edge is the combination of fast charging, quick switchover and expandability. See the full Delta 3 Plus vs C1000 Gen 2 comparison. Weighing the Jackery instead? See Delta 3 Plus vs Explorer 1000 v2. For the brands overall, see EcoFlow vs Jackery, EcoFlow vs Bluetti or Anker SOLIX vs EcoFlow.
Who should buy it
And who should look elsewhere
Good fit: essentials backup (fridge, router, lights, CPAP); a home office that needs a reliable UPS; car camping and weekend trips; anyone who wants room to add capacity later.
Look elsewhere if: you need to run several big loads at once (look at 2 kWh+ stations, such as the Anker SOLIX F3800 Plus for whole-home backup), you want the lightest unit for its capacity, or the C1000 Gen 2's higher output matters more to you than expandability.
In our buying guides, the Delta 3 Plus is best overall in The Best Portable Power Stations and best overall in Best Portable Power Station for CPAP.
FAQ
Quick answers to common questions
How long will the Delta 3 Plus 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; see how long a power station runs a fridge.
Can the Delta 3 Plus be used as a UPS?
Yes. It switches over in under 10 ms, fast enough for most computers and routers.
Is the Delta 3 Plus expandable?
Yes, up to 5 kWh with compatible EcoFlow extra batteries.
Is it LiFePO4?
Yes: it uses LiFePO4 (LFP) cells rated for 4,000 cycles to 80% capacity.
