EcoFlow DELTA 3
70BatteryRank score
$519as of 2026-07-11
Fair price← CompareCheck price on Amazon 
Check price on Amazon
EcoFlow DELTA 3 vs Oupes Mega 1
Decision readout
Better station
Too close to call overall — choose by how and where you use it.
Better buy today
No price tie-breaker today — choose based on fit and the sourced details.
Oupes Mega 1
64BatteryRank score
$699as of 2026-07-11
High priceWhat changes the decision
- Home backup: Oupes Mega 1 — more usable capacity and AC output
- Camping & RV: EcoFlow DELTA 3 — lighter and easier to carry
01 · Score evidence
Score breakdown
70
EcoFlow DELTA 3
Overall
64
Oupes Mega 1
62
POWER
Oupes Mega 1 +5
67
Usable capacity and how much you can run at once.
82
TRUST
EcoFlow DELTA 3 +12
70
Owner reputation, safety record, warranty, and build durability.
66
CHARGING
Incomplete data
N/A
Wall and solar recharge speed.
65
LIVABILITY
EcoFlow DELTA 3 +22
43
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 3
Rated (on the box)1,024 Wh
The marketing number — total cell capacity.
Usable (at the outlet)measured870 Wh
~870Wh effective at ~85% (Backup Power Hub, calculated) vs 1024 rated · 15% below the label
Oupes Mega 1
Rated (on the box)1,024 Wh
The marketing number — total cell capacity.
Usable (at the outlet, est.)870 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 3 | Oupes Mega 1 |
|---|---|---|
| Usable capacity | 1,024 Wh | 1,024 Wh |
| Continuous power output | 1,800 W | 2,000 W |
| Surge power output | 3,600 W | 4,500 W |
| Max solar input | 500 W | 800 W |
| AC charge time (0–100%) | 56 min | — |
| Weight | 12.5 kg | 12.6 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 3
$519as of 2026-07-11Fair price
Oupes Mega 1
$699as of 2026-07-11High price
Each verdict compares today's price against that model's own tracked history — never MSRP theater.
Where these rank
- EcoFlow DELTA 3 #5 of 10 in Best for Camping · #5 of 10 in Best for CPAP
- Oupes Mega 1 #10 of 10 in Best for Camping · #10 of 10 in Lightest Power Stations