Product images: EcoFlow official store
EcoFlow · Portable power station
EcoFlow DELTA Pro 3
A 240V, 4kWh home battery on wheels
WattLab Score
How good it is for its size · method
- 4,096 WhCapacity
- 4,000 W / 8,000 WAC continuous / surge
- 113.5 lbWeight
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Overview
The DELTA Pro 3 starts at 4,096Wh of LiFePO4 with a 4,000W inverter at both 120V and 240V (8,000W surge), a 10 ms UPS and 2,600W of solar input, and it expands up to 48kWh in a full EcoFlow system.
Ideal for
Homeowners who need 240V appliances (well pump, dryer, central AC) during outages and want a battery system they can expand over time.
Skip it if
Camping, RV trips where you need to lift it, or anyone who only needs to back up a fridge and Wi-Fi; a 2kWh station costs far less.
Editor's ratings · 0–10
Score profile
Seven axes on fixed scales, so scores compare directly across every model on WattLab Review.
What's inside the 8.4 WattLab Score
- Charging speed—
- Battery technology10.0
- Energy density (Wh/lb)7.2
- Solar refill speed8.0
- Value (Wh per $)6.9
- Versatility (ports & features)10.0
How long will it run?
Estimated runtimes on a full charge for common devices.
| Device | Typical load | Estimated runtime |
|---|---|---|
| Smartphone charge | 15 Wh each | ~232 charges |
| Wi-Fi router + modem | 15 W | ~232 hr |
| CPAP (no humidifier) | 40 W | ~87 hr |
| Laptop | 60 W | ~58 hr |
| 12V camping fridge (avg) | 35 W | ~99 hr |
| 32" LED TV | 50 W | ~70 hr |
| Full-size fridge (avg) | 150 W | ~23 hr |
| Coffee maker | 1,000 W | ~3.5 hr |
Estimates use 85% of rated capacity to account for inverter losses. Real runtimes vary with temperature, battery age and how often appliances cycle.
Full specifications
Battery
| Capacity | 4,096 Wh |
|---|---|
| Battery chemistry | LiFePO4 |
| Rated cycle life | 4,000 cycles |
Output
| AC output (continuous) | 4,000 W |
|---|---|
| Surge / peak | 8,000 W |
| Power Lifting (resistive loads) | — |
| AC outlets (120V, pure sine) | 7 |
| USB-C ports | 2 |
| Max USB-C output | 100 W |
| USB-A ports | 2 |
| 12V car outlet | — |
| DC5521 barrel ports | 1 |
Charging
| Max AC charging input | 1,800 W |
|---|---|
| AC charge time (standard) | — |
| Fastest full charge | — |
| Max solar input | 2,600 W |
| Solar input spec | 2 ports: high-voltage 30–150V (1,600W max) + low-voltage 11–60V (1,000W max) |
| Solar charge time | — |
| Car charge time | — |
Size & build
| Weight | 113.5 lb (51.5 kg) |
|---|---|
| Dimensions | 16.2 × 13.4 × 27.3 in |
| Rated noise | ≤30 dB |
| Charging temperature | 32–113°F (0–45°C) |
| Discharge temperature | 14–113°F (-10–45°C) |
Smart features & warranty
| UPS switchover | ≤10 ms |
|---|---|
| App control | EcoFlow app (Wi-Fi + Bluetooth) |
| Expandable battery | Yes |
| Warranty | 5 years |
Value
| Reference price* | $2,799.00 |
|---|---|
| Wh per dollar* | 1.46 Wh/$ |
Other details
| Voltage | 120V and 240V output from one unit |
|---|---|
| AC outlets detail | 4 × NEMA 5-20R, 1 × TT-30R (30A RV), 1 × NEMA 6-20R (240V), 1 × L14-30R (120/240V) |
| X-Boost | Up to 6,000W for resistive loads |
| AC charging input | 1,800W max at 120V; up to 3,600W at 240V |
| Expansion | Up to 12kWh per unit with 2 extra batteries; up to 48kWh in a 3-unit EcoFlow system |
| Battery pack | IP65-rated sealed battery pack |
| 12V DC | DC5521 × 1 and Anderson port (30A); no cigarette-lighter socket |
| Car charging input | 12V 8A / 48V 20A |
| Mobility | Wheels and pull handle |
- Fast charging: EcoFlow quotes 0–80% in about 50 minutes with its fastest X-Stream charging setup; charging from a standard 120V outlet is limited to 1,800W and takes considerably longer.
- Solar time: EcoFlow solar panels sold separately.
- Cycle life: 4,000 cycles to 80% capacity at 0.5C, 25°C (EcoFlow rating).
- * Reference price from the manufacturer's US store on the date shown. Amazon's price may be different.
- — means the manufacturer doesn't publish that figure. We never estimate missing specs.
EcoFlow DELTA Pro 3
See today's price and availability on Amazon.com
Our take
The DELTA Pro 3 is less a portable gadget than a home battery that happens to have wheels. Its headline feature is 240V output from a single unit, so it can run well pumps, a dryer circuit or a central AC compressor that 120V-only stations can't. The 4,000W inverter (8,000W surge, 6,000W X-Boost) and 4,096Wh of LiFePO4 can carry a typical refrigerator for around two days, or keep a home's essentials going through a long outage.
It's built for permanent backup duty. EcoFlow quotes a 10 ms UPS switchover, the battery pack is sealed to IP65, and the LiFePO4 cells are rated for 4,000 cycles to 80%. Through the app you can schedule charging around utility rates, and with EcoFlow's Smart Home Panel 2 it can integrate with your home's wiring. Add two extra batteries for 12kWh per unit, or link three units for up to 48kWh.
Charging is very flexible. Two solar inputs accept up to 2,600W combined (a 1,600W high-voltage port and a 1,000W low-voltage port), and EcoFlow quotes 0–80% in about 50 minutes with its fastest charging setup. A standard 120V outlet is capped at 1,800W, so wall charging is slower; a 240V outlet doubles that. It's rated at 30 dB at low loads.
The catch is size and cost. At 113.5 lb, it rolls rather than carries, and the price puts it in a different league from 1–2kWh stations. There's no cigarette-lighter socket, and many of its best tricks need extra EcoFlow hardware. If you want serious, expandable 240V home backup without a permanent install, it's one of the most capable options available.
Pros
- 120V and 240V output, 4,000W continuous and 8,000W surge
- 4,096Wh LiFePO4 rated for 4,000 cycles, expandable to 48kWh
- 2,600W solar input across two ports
- 10 ms UPS and an IP65-sealed battery pack
- Seven AC outlets including TT-30R and L14-30R
Cons
- 113.5 lb, so you roll it rather than carry it
- Expensive, and home integration needs extra EcoFlow hardware
- Wall charging from 120V is capped at 1,800W
- No 12V cigarette-lighter socket
What owners and reviewers say
Independent reviews
The DELTA Pro 3 has been reviewed by TechRadar, Digital Trends, Bob Vila and RV.com, and CleanTechnica published a long-term review after months of use. Reviewers consistently list it at around 113–114 lb. We'll add Amazon buyer feedback themes once we can verify them.
Compare it head-to-head
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BLUETTI
BLUETTI Elite 30 V2
The pocket-sized LiFePO4 pick with a real 600W inverter
- 288 WhCapacity
- 600 WAC output
- LiFePO4Battery
- 9.48 lbWeight
$289.99reference price*
Jackery
Jackery Explorer 1000 v2
The 1kWh sweet spot for home backup that still fits in a car trunk
- 1,070 WhCapacity
- 1,500 WAC output
- LiFePO4Battery
- 23.8 lbWeight
$559.00reference price*
Jackery
Jackery Explorer 300
The proven ultralight for cameras, drones and weekend camping
- 293 WhCapacity
- 300 WAC output
- Li-ion (NMC)Battery
- 7.1 lbWeight
$289.00reference price*
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EcoFlow DELTA Pro 3 on Amazon.com