EcoFlow DELTA 2
57BatteryRank score
$429as of 2026-07-11
Fair price← CompareCheck price on Amazon 
Check price on Amazon
EcoFlow DELTA 2 vs EcoFlow DELTA 3
Decision readout
Better station
EcoFlow DELTA 3 leads by 13 points overall.
Better buy today
No purchase urgency: the performance leader is not at a Good or Great price today.
EcoFlow DELTA 3
70BatteryRank score
$519as of 2026-07-11
Fair priceWhat changes the decision
- Home backup: EcoFlow DELTA 3 — more usable capacity and AC output
- CPAP & bedroom: EcoFlow DELTA 2 — quieter under load
- Camping & RV: EcoFlow DELTA 2 — lighter and easier to carry
01 · Score evidence
Score breakdown
57
EcoFlow DELTA 2
Overall
70
EcoFlow DELTA 3
51
POWER
EcoFlow DELTA 3 +11
62
Usable capacity and how much you can run at once.
68
TRUST
EcoFlow DELTA 3 +14
82
Owner reputation, safety record, warranty, and build durability.
32
CHARGING
EcoFlow DELTA 3 +34
66
Wall and solar recharge speed.
79
LIVABILITY
EcoFlow DELTA 2 +14
65
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 2
Rated (on the box)1,024 Wh
The marketing number — total cell capacity.
Usable (at the outlet)measured890–900 Wh
~890-900Wh usable AC (~86-90% conversion) vs 1024Wh rated (Portable Power Lab, 6-month test) · 13% below the label
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
03 · Sourced hardware
Key specs, side by side
| Spec | EcoFlow DELTA 2 | EcoFlow DELTA 3 |
|---|---|---|
| Usable capacity | 1,024 Wh | 1,024 Wh |
| Continuous power output | 1,800 W | 1,800 W |
| Surge power output | 2,700 W | 3,600 W |
| Max solar input | 500 W | 500 W |
| AC charge time (0–100%) | 72 min | 56 min |
| Weight | 12 kg | 12.5 kg |
| Rated cycle life | 3,000 cycles | 4,000 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 2
$429as of 2026-07-11Fair price
EcoFlow DELTA 3
$519as of 2026-07-11Fair 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