Product images: EcoFlow official store
EcoFlow · Portable power station
EcoFlow DELTA Pro
The proven 3.6kWh home-backup workhorse, now at a lower price
WattLab Score
How good it is for its size · method
- 3,600 WhCapacity
- 3,600 W / 7,200 WAC continuous / surge
- 1.8 hrFastest full charge
- 99 lbWeight
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Overview
The original DELTA Pro still delivers 3,600Wh of LiFePO4, a 3,600W inverter (7,200W surge), five AC outlets and 1,600W of solar input. It's heavy at 99 lb but rolls on wheels and expands with extra batteries.
Ideal for
Homeowners who want multi-day outage backup for a fridge, well pump and essentials, with lots of solar input and room to expand.
Skip it if
Camping, vans or anyone who needs to carry their power station, and setups that need a certified fast UPS for computers.
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 8.1 WattLab Score
- Charging speed7.2
- Battery technology9.5
- Energy density (Wh/lb)7.2
- Solar refill speed6.5
- Value (Wh per $)8.2
- 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 | ~204 charges |
| Wi-Fi router + modem | 15 W | ~204 hr |
| CPAP (no humidifier) | 40 W | ~76 hr |
| Laptop | 60 W | ~51 hr |
| 12V camping fridge (avg) | 35 W | ~87 hr |
| 32" LED TV | 50 W | ~61 hr |
| Full-size fridge (avg) | 150 W | ~20 hr |
| Coffee maker | 1,000 W | ~3.1 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 | 3,600 Wh |
|---|---|
| Battery chemistry | LiFePO4 |
| Rated cycle life | 3,500 cycles |
Output
| AC output (continuous) | 3,600 W |
|---|---|
| Surge / peak | 7,200 W |
| Power Lifting (resistive loads) | — |
| AC outlets (120V, pure sine) | 5 |
| USB-C ports | 2 |
| Max USB-C output | 100 W |
| USB-A ports | 4 |
| 12V car outlet | 12V / 10A (126W) |
| DC5521 barrel ports | 2 |
Charging
| Max AC charging input | 1,800 W |
|---|---|
| AC charge time (standard) | 2.7 hr |
| Fastest full charge | 1.8 hr |
| Max solar input | 1,600 W |
| Solar input spec | 11–150V, 15A max, 1,600W |
| Solar charge time | — |
| Car charge time | — |
Size & build
| Weight | 99 lb (45 kg) |
|---|---|
| Dimensions | 25 × 11.2 × 16.4 in |
| Rated noise | — |
| Charging temperature | — |
| Discharge temperature | — |
Smart features & warranty
| UPS switchover | — |
|---|---|
| App control | EcoFlow app (Wi-Fi + Bluetooth) |
| Expandable battery | Yes |
| Warranty | 5 years |
Value
| Reference price* | $1,799.00 |
|---|---|
| Wh per dollar* | 2.00 Wh/$ |
Other details
| X-Boost | Runs resistive appliances up to 4,500W |
|---|---|
| USB-A detail | 2 × 12W + 2 × 18W fast charge |
| Anderson port | 12.6V / 30A |
| Expansion | Up to two DELTA Pro Smart Extra Batteries (7.2kWh each unit pair) or a Smart Generator |
| AC charging input | 1,800W max at 120V / 3,000W max at 240V |
| Car charging input | 12V/24V, 8A |
| Backup | EPS (emergency power supply) mode; EcoFlow's US spec page doesn't list a switchover time |
| Mobility | Built-in wheels and telescoping handle |
- Fast charging: 2.7 hours at 1,800W from a standard 120V outlet; 1.8 hours at 3,000W from a 240V outlet (EcoFlow US figures).
- Solar time: EcoFlow solar panels sold separately.
- Cycle life: 3,500 cycles to 80% capacity; 6,500 cycles to 50% (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.
Spec sources
EcoFlow DELTA Pro
See today's price and availability on Amazon.com
Our take
The DELTA Pro was one of the first portable stations big enough to back up a real home circuit, and it remains a strong option now that its price has fallen. With 3,600Wh of LiFePO4, it can keep a full-size refrigerator running for roughly a day and a half, or cover a fridge, internet, lights and a few phones and laptops through a long outage. The 3,600W inverter (7,200W surge, 4,500W X-Boost for resistive loads) starts well pumps, window AC units and power tools.
It charges at 1,800W from a regular 120V outlet, a full charge in about 2.7 hours, or 3,000W from a 240V dryer-style outlet in 1.8 hours. Solar input is excellent at up to 1,600W (11–150V), enough to refill most of the battery in a good day of sun. Ports are plentiful: five AC outlets, four USB-A, two 100W USB-C, a 12V car socket, two DC5521 jacks and a 30A Anderson port.
You can also grow it. Add up to two DELTA Pro Smart Extra Batteries, or pair it with EcoFlow's Smart Generator, and the app manages the whole system. EcoFlow's home-integration accessories let it feed a transfer switch or smart panel.
The trade-offs come from its age and size. At 99 lb it needs the built-in wheels and handle; it isn't something you'll lift into a truck alone. Backup works through EcoFlow's EPS mode, but EcoFlow's US spec page doesn't quote a switchover time, so if you need a fast UPS for computers, the DELTA Pro 3's 10 ms rating is the safer bet. Treat it as a big, flexible home battery rather than a portable camping unit.
Pros
- 3,600Wh LiFePO4 with 3,500 cycles to 80%
- 3,600W continuous, 7,200W surge and 4,500W X-Boost
- 1,600W solar input (11–150V)
- 15 outputs including five AC, four USB-A and two 100W USB-C
- Expandable with extra batteries; built-in wheels
Cons
- 99 lb is a two-person lift
- No published UPS switchover time (EPS mode)
- No 240V output, unlike the DELTA Pro 3
- Older design than EcoFlow's newest models
What owners and reviewers say
Independent reviews
The DELTA Pro has been on sale since 2021, and EcoFlow says more than 280,000 homes worldwide have chosen it. It has since been succeeded by the DELTA Pro 3, which adds 240V output and a published 10 ms UPS switchover. We'll add Amazon buyer feedback themes once we can verify them.
Compare it head-to-head
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- EcoFlow DELTA Pro vs EcoFlow DELTA 3 Max
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- EcoFlow DELTA Pro vs DYNESS PPS2400
- EcoFlow DELTA Pro vs EcoFlow DELTA Pro Ultra X
- EcoFlow DELTA Pro vs EcoFlow TITAN Plus + 800W Solar
- EcoFlow DELTA Pro vs EcoFlow DELTA Pro 3 + Extra Battery
- EcoFlow DELTA Pro vs DABBSSON Turbo 12000
- EcoFlow DELTA Pro vs Anker SOLIX E10
- EcoFlow DELTA Pro vs EcoFlow RIVER 3 Plus + EB300
- EcoFlow DELTA Pro vs Anker SOLIX C1000 Gen 2
- EcoFlow DELTA Pro vs BLUETTI AC180
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*
Ready to decide?
EcoFlow DELTA Pro on Amazon.com