EcoFlow DELTA Pro 3 Review
A 4 kWh station with 240V output, wheels and very fast wall charging. A strong choice if your loads stay under 4,000 watts.
The DELTA Pro 3 is the easiest 240V station to live with. It rolls on wheels, charges from the wall to 80% in about 50 minutes, and stores 4 kWh. Its weak spot is output: 4,000 W is less than the Anker F3800 Plus or Jackery 5000 Plus, so it cannot run as many big loads at once. At its sale price of around $2,300 it is good value; at the $3,699 list price it is not.
Who it's for
Buy the DELTA Pro 3 if you want 240V capability for a well pump or a single 240V circuit, your total load stays under 4,000 W, and you want to move the unit or charge it quickly when a storm is forecast.
Skip it if you need to run a well pump, a fridge, a microwave and a furnace together. That combination can top 4,000 W, and the Anker F3800 Plus gives you 6,000 W for less money at list price.
Key specs
| Spec | DELTA Pro 3 |
|---|---|
| Battery capacity | 4,096 Wh (LFP) |
| Expandable to | 12 kWh per unit with extra batteries |
| Continuous AC output | 4,000 W |
| Surge | 8,000 W |
| X-Boost | Up to 6,000 W for resistive loads such as heaters |
| Voltage | 120V and 240V |
| Solar input | 2,600 W |
| Wall charging | 0–80% in about 50 minutes |
| Battery life | 4,000+ cycles to 80% |
| Weight | About 114 lb, with wheels and handle |
| Warranty | 5 years |
What it can run
You get about 3,480 usable watt-hours after inverter losses.
hours ≈ 4,096 × 0.85 ÷ watts used
- Refrigerator, router and LED lights (about 220 W average): roughly 16 hours.
- Fridge, chest freezer, router, lights and a furnace fan (about 780 W average): roughly 4.5 hours.
- Sump pump in a heavy storm (about 300 W average): roughly 12 hours. See running a sump pump.
X-Boost helps with heaters and kettles but lowers the voltage to do it, so it does not help start motors such as pumps and compressors.
Pros and cons
What we like
- Wheels and a telescopic handle
- Wall charging to 80% in under an hour
- 240V output in a 4 kWh package
- Expands to about 12 kWh per unit
- Big discounts are common
What to know
- 4,000 W limits how much runs at once
- Solar input is lower than the Anker or Jackery
- Poor value at full list price
- Still about 114 lb, even with wheels
How it compares
| Model | Capacity | Output | 240V | List price | Per kWh |
|---|---|---|---|---|---|
| EcoFlow DELTA Pro 3 | 4,096 Wh | 4,000 W | Yes | $3,699 | $903 |
| Anker SOLIX F3800 Plus | 3,840 Wh | 6,000 W | Yes | $2,799 | $729 |
| Jackery Explorer 5000 Plus | 5,040 Wh | 7,200 W | Yes | $3,149 | $625 |
| Bluetti Apex 300 | 2,765 Wh | 3,840 W | Yes | $2,399 | $868 |
At list price the DELTA Pro 3 costs the most per kWh in this group. At around $2,300 on sale it drops to about $560 per kWh, which beats the F3800 Plus at list. Our DELTA Pro 3 vs F3800 Plus comparison goes deeper.
Bottom line
Buy the DELTA Pro 3 on sale if you value portability and fast charging and your loads fit under 4,000 W. If you need more output, look at the Anker F3800 Plus or Jackery 5000 Plus instead.
Specs and prices come from manufacturer listings and published reviews. We have not lab-tested these units. Prices change often, so check the current price before you buy.