EcoFlow DELTA Pro 3
74BatteryRank score
$2,599as of 2026-07-11
Fair price← CompareCheck price on Amazon 
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EcoFlow DELTA Pro 3 vs EcoFlow DELTA Pro Ultra
Decision readout
Better station
EcoFlow DELTA Pro 3 leads by 15 points overall.
Better buy today
No purchase urgency: the performance leader is not at a Good or Great price today.
EcoFlow DELTA Pro Ultra
59BatteryRank score
$4,099as of 2026-07-11
Good priceWhat changes the decision
- Home backup: EcoFlow DELTA Pro 3 — more usable capacity and AC output
- Camping & RV: EcoFlow DELTA Pro Ultra — lighter and easier to carry
01 · Score evidence
Score breakdown
74
EcoFlow DELTA Pro 3
Overall
59
EcoFlow DELTA Pro Ultra
83
POWER
EcoFlow DELTA Pro 3 +29
54
Usable capacity and how much you can run at once.
73
TRUST
EcoFlow DELTA Pro 3 +7
66
Owner reputation, safety record, warranty, and build durability.
N/A
CHARGING
Incomplete data
N/A
Wall and solar recharge speed.
49
LIVABILITY
EcoFlow DELTA Pro Ultra +7
56
Lightweight, portable, and quiet enough to live with.
Computed from sourced data with a published, price-independent formula. Scores are relative to each model's size class.
02 · Usable energy
Capacity truth
The watt-hours on the box aren't what reaches your devices. Same scale, both units.
EcoFlow DELTA Pro 3
Rated (on the box)4,096 Wh
The marketing number — total cell capacity.
Usable (at the outlet)measured3,790 Wh
3790Wh usable at >93% efficiency (OutdoorGearLab) vs 4096 rated · 7% below the label
EcoFlow DELTA Pro Ultra
Rated (on the box)6,144 Wh
The marketing number — total cell capacity.
Usable (at the outlet, est.)5,222 Wh
What reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.
03 · Sourced hardware
Key specs, side by side
| Spec | EcoFlow DELTA Pro 3 | EcoFlow DELTA Pro Ultra |
|---|---|---|
| Usable capacity | 4,096 Wh | 6,144 Wh |
| Continuous power output | 4,000 W | 7,200 W |
| Surge power output | 8,000 W | 10,800 W |
| Max solar input | 2,600 W | 5,600 W |
| Weight | 51.5 kg | 82.4 kg |
| Rated cycle life | 4,000 cycles | 3,500 cycles |
Manufacturer-claimed unless marked verified (FCC/UL/DOE/lab). Hover any figure for its source. The better reading in each row is highlighted — lower wins for weight and recharge time.
04 · Tracked street price
Price & fair-price verdict
EcoFlow DELTA Pro 3
$2,599as of 2026-07-11Fair price
EcoFlow DELTA Pro Ultra
$4,099as of 2026-07-11Good price
Each verdict compares today's price against that model's own tracked history — never MSRP theater.
Where these rank
- EcoFlow DELTA Pro 3 #2 XL / home backup in Best Portable Power Stations · #2 of 10 in Best for RV & Van Life