EcoFlow DELTA 3 Ultra Plus Review
A 3 kWh, 3,600 W station that can grow to 11 kWh. More room than a 2 kWh unit for a reasonable price.
The DELTA 3 Ultra Plus sits in the sweet spot between a 2 kWh essentials station and a 240V home system. It runs a fridge, freezer, internet and lights for most of a day, has the output to start a sump pump, and lets you add batteries later. At $1,599 list it is about $520 per kWh, the best list-price value among the stations we track. It is 120V only.
Who it's for
Buy the DELTA 3 Ultra Plus if you want more than overnight coverage for 120V essentials, or you want the option to expand to multi-day backup without paying for 240V.
Skip it if you have a 240V well pump. Look at the Anker F3800 Plus or Jackery 5000 Plus instead.
Key specs
| Spec | DELTA 3 Ultra Plus |
|---|---|
| Battery capacity | 3,072 Wh (LFP) |
| Expandable to | 11 kWh |
| Continuous AC output | 3,600 W |
| Surge | 7,200 W |
| Voltage | 120V only |
| Price per kWh | About $520 at list |
What it can run
You get about 2,610 usable watt-hours after inverter losses.
hours ≈ 3,072 × 0.85 ÷ watts used
- Fridge, router and LED lights (about 220 W average): roughly 12 hours.
- Fridge, chest freezer, router and lights (about 280 W average): roughly 9.3 hours.
- Sump pump in a heavy storm (about 300 W average): roughly 8.7 hours. Its 7,200 W surge handles the motor start easily.
Pros and cons
What we like
- Best list-price value per kWh we track
- 3,600 W output and 7,200 W surge
- Expands to 11 kWh
- Enough for fridge, freezer and internet all day
What to know
- No 240V output
- Heavier than 2 kWh stations
- Expansion batteries add cost
How it compares
| Model | Capacity | Output | 240V | List price | Per kWh |
|---|---|---|---|---|---|
| EcoFlow DELTA 3 Ultra Plus | 3,072 Wh | 3,600 W | No | $1,599 | $521 |
| Jackery HomePower 3000 | 3,072 Wh | 3,600 W | No | $2,499 | $813 |
| Bluetti Elite 200 V2 | 2,073 Wh | 2,600 W | No | $1,699 | $820 |
| Bluetti Apex 300 | 2,765 Wh | 3,840 W | Yes | $2,399 | $868 |
The Jackery HomePower 3000 has the same capacity and output but lists $900 higher and does not expand. The Bluetti Elite 200 V2 is cheaper on sale but holds 1 kWh less.
Bottom line
If you want solid 120V backup with room to grow, the DELTA 3 Ultra Plus is the best value at list price. Watch for Black Friday discounts, which can make it cheaper still.
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.