EcoFlowPower stationLiFePO4
DELTA 2
Reliable portable power station with expandable capacity, fast charging, and long-lasting performance for home backup, outdoor adventures, and off-grid power.
Capacity
1,024 Wh
AC output
1,800 W
Surge
2,700 W
duration not stated
Solar input
500 W
Cycle life
3,000
Weight
27 lb
Max system
3,072 Wh
Warranty
5 yr
Best price
Updated 3h ago
$684
via EcoFlow Direct · ships free
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Price history · 90 days
EcoFlow Direct
EcoFlow Direct
$684
90-day low
$449 (2026-05-02)
Sale-window patterns arrive after we accumulate ≥6 months of price history. Set a price alert to catch flash dips below the 90-day low — we email you the moment it hits.
What reviewers said about this exact unit
10 sources · linked & timestampedWe don't review power stations ourselves. We aggregate verbatim quotes from trusted reviewers, link to the source video with timestamps, and flag where they disagree.
HO
Hobotechtop tier★ Verifiedtop pick
EcoFlow DELTA 2: Great Bang for Buck Despite Cost-Cutting Compromises· 9/16/2022“this is one heck of a bang for your buck product i would have no problem spending my own money on one of these”Open at 24:16
HO
Hobotechtop tier★ Verifiedcaution noted
EcoFlow DELTA 2: Great Bang for Buck Despite Cost-Cutting Compromises· 9/16/2022“it's just too darn loud i'm afraid”Open at 21:03
HO
Hobotechtop tier★ Verifiedcaution noted
EcoFlow DELTA 2: Great Bang for Buck Despite Cost-Cutting Compromises· 9/16/2022“this is proof that the delta ii cannot run a computer in ups mode if the power goes out you're gonna lose your work”Open at 15:19
HO
Hobotechtop tier★ Verifiedranked
EcoFlow DELTA 2: Great Bang for Buck Despite Cost-Cutting Compromises· 9/16/2022“jackery 1000 pro launched earlier this month that thing was basically a huge flop thanks to this product's early announcement”Open at 25:56
HO
Hobotechtop tier★ Verifiedcaution noted
EcoFlow DELTA 2: Great Bang for Buck Despite Cost-Cutting Compromises· 9/16/2022“it actually makes sense to just go ahead and buy two of these if you really need the capacity than to buy one of these with the add-on battery”Open at 22:31
WI
Will Prowsetop tier★ Verifiedtop pick
EcoFlow DELTA 2: Hard to Beat for the Money, But Missing Key Features“today we're checking out the ecoflow Delta 2 and for the money it's hard to beat this is a complete solar power system”Open at 0:02
WI
Will Prowsetop tier★ Verifiedcaution noted
EcoFlow DELTA 2: Hard to Beat for the Money, But Missing Key Features“there's no mc4 adapter that's not good this one's for 12 volts only not for solar panels and they sell that cable on Amazon for 30 dollars so if you want to use your own solar panels with mc4 adapters you're gonna have to buy that cable separately”Open at 4:38
WI
Will Prowsetop tier★ Verifiedranked
EcoFlow DELTA 2: Hard to Beat for the Money, But Missing Key Features“anchor costs 1 100 so 300 more than this but you can only connect 300 watts of solar panels to this the Delta II can handle 500 watts and it's cheaper and the output of the anchor is 15 100 Watts this thing is 1800 watts”Open at 6:40
WI
Will Prowsetop tier★ Verifiedcaution noted
EcoFlow DELTA 2: Hard to Beat for the Money, But Missing Key Features“the one feature that I wish that these things had was that the inverter could turn itself on if solar power is available I've been requesting that for years”Open at 8:47
WI
Will Prowsetop tier★ Verifiedbest in class
EcoFlow DELTA 2: Hard to Beat for the Money, But Missing Key Features“I think currently ecoflow is the king of solar generators”Open at 10:01
Runtime predictions for your loads
Based on 1,024 Wh capacity · 95% LiFePO4 DoD · 90% AC inverter efficiency. Solar column assumes ~25% of rated input as sustained sun average. Phase-1 uses constant-load math; time-resolved multi-day SOC simulation is the Phase-2 north star.
| Load profile | Continuous draw | Runtime estimate |
|---|---|---|
| CPAP only (overnight) | 60W | 14.6 hr |
| Fridge only (cycle-averaged) | 70W | 12.5 hr |
| Wifi router + LED lights | 55W | 15.9 hr |
| Your full continuous load (215W) | 215W | 4.1 hr |
| Microwave + base load (peak) | 1300W | 40 min |
| Window AC 8,000 BTU (avg) | 700W | 1.3 hr |
Detailed specs
Sourced from manufacturer datasheet · verified 1mo agoFor advanced shoppers. Plug types matter if you have a 30A RV; MPPT range matters if you plan custom solar arrays.
Battery behavior
| Cell chemistry | LiFePO4 |
| Cycle life @ 80% capacity | 3,000 |
| Dimensions | 15.7×8.3×11.1 |
| Parasitic loss (idle, AC off) | pending verification |
Why parasitic loss matters: for store-and-forget hurricane prep, even ~2W idle drain adds up — a fully charged unit can drain in months sitting in a closet.
Inputs
Solar — Solar InputXT60
11–60V · 15A max · 500W max
Outputs — single unit, 120V only
AC outlets (120V)
- NEMA 5 15R × 4120V 15A
- NEMA 5 20R × 2120V 20A
Pure sine wave · 1,800W combined AC continuous (shared budget across all AC outputs)
USB
- USB A × 4
- USB C PD × 2100W
DC
- car outlet12V
240V split-phase note: A single DELTA 2 outputs 120V only. no — 120V only.
How DELTA 2 compares to alternatives
DELTA 2 specs verified from automated extraction with cross-source verification. Alternatives marked “pending verify” haven't been through the verification pipeline yet.
Capacity
DELTA 21,024 Wh
EcoFlow RIVER 2 Pro768 Wh
Bluetti Apex 3002,765 Wh
AC continuous
DELTA 21,800 W
EcoFlow RIVER 2 Pro800 W
Bluetti Apex 3003,840 W
Surge
DELTA 22,700 W
EcoFlow RIVER 2 Pro1,600 W
Bluetti Apex 3007,680 W
Cycle life
DELTA 23,000
EcoFlow RIVER 2 Pro3,000
Bluetti Apex 3006,000
Solar input
DELTA 2500 W
EcoFlow RIVER 2 Pro220 W
Bluetti Apex 3002,400 W
Native 240V
DELTA 2no — 120V only
EcoFlow RIVER 2 Pro—
Bluetti Apex 300no — requires Hub A1 for parallel connection
Max system
DELTA 23,072 Wh
EcoFlow RIVER 2 Pro—
Bluetti Apex 30019,354 Wh
Weight
DELTA 227 lb
EcoFlow RIVER 2 Pro18.2 lb
Bluetti Apex 30083.8 lb
Best price now
DELTA 2$684
EcoFlow RIVER 2 Pro$499
Bluetti Apex 300$1,499
Wh per dollar
DELTA 21.5
EcoFlow RIVER 2 Pro1.54
Bluetti Apex 3001.84
| Metric | DELTA 2 | EcoFlow RIVER 2 Pro | Bluetti Apex 300 |
|---|---|---|---|
| Capacity | 1,024 Wh | 768 Wh | 2,765 Wh |
| AC continuous | 1,800 W | 800 W | 3,840 W |
| Surge | 2,700 W | 1,600 W | 7,680 W |
| Cycle life | 3,000 | 3,000 | 6,000 |
| Solar input | 500 W | 220 W | 2,400 W |
| Native 240V | no — 120V only | — | no — requires Hub A1 for parallel connection |
| Max system | 3,072 Wh | — | 19,354 Wh |
| Weight | 27 lb | 18.2 lb | 83.8 lb |
| Best price now | $684 | $499 | $1,499 |
| Wh per dollar | 1.5 | 1.54 | 1.84 |
Output ports comparison
How many of each plug-type does each unit have? Match against your real loads — TT-30R if you have a 30A RV, L14-30R if you want a transfer switch, USB-C PD if you charge laptops.
120V AC outlets
Standard 15A outlet
NEMA 5-15R
DELTA 2×4
EcoFlow RIVER 2 Pro×4
Bluetti Apex 300×2
20A T-slot household
NEMA 5-20R
DELTA 2×2
EcoFlow RIVER 2 Pro—
Bluetti Apex 300—
| Plug | DELTA 2 | EcoFlow RIVER 2 Pro | Bluetti Apex 300 |
|---|---|---|---|
Standard 15A outlet NEMA 5-15R | ×4 | ×4 | ×2 |
20A T-slot household NEMA 5-20R | ×2 | — | — |
USB
USB-A
USB-A (Type A)
DELTA 2×4
EcoFlow RIVER 2 Pro×3
Bluetti Apex 300×2
USB-C PD
USB-C Power Delivery
DELTA 2×2
EcoFlow RIVER 2 Pro—
Bluetti Apex 300—
| Plug | DELTA 2 | EcoFlow RIVER 2 Pro | Bluetti Apex 300 |
|---|---|---|---|
USB-A USB-A (Type A) | ×4 | ×3 | ×2 |
USB-C PD USB-C Power Delivery | ×2 | — | — |
Low-voltage DC
12V cigarette / car
12V DC cigarette socket
DELTA 2×1
EcoFlow RIVER 2 Pro×1
Bluetti Apex 300×2
| Plug | DELTA 2 | EcoFlow RIVER 2 Pro | Bluetti Apex 300 |
|---|---|---|---|
12V cigarette / car 12V DC cigarette socket | ×1 | ×1 | ×2 |
Counts are output-direction only. Charging cables (input ports) live in the Detailed specs section above.