EcoFlow DELTA 2 Max
#9 in LargeFull review
A proven 2kWh LiFePO4 station for home backup and RV trips with plenty of outlets. It costs less than the DELTA 3 Max Plus but has slower switchover and less output.
Amazon $1,049$1,049
The EcoFlow DELTA 2 Max is the better portable power station overall, rated 4.1 to 3.5. The EcoFlow DELTA 2 Max leads on value, battery life and features. The BLUETTI Premium 200 V2 wins on AC output. The EcoFlow DELTA 2 Max costs $500 less ($1,049 vs $1,549).
BLUETTI Premium 200 V2
#29 in LargeFull review
For buyers who want 2 kWh with higher output than the Elite 200 V2 for running larger appliances.
BLUETTI $1,549$1,549
Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the EcoFlow DELTA 2 Max for value ($0.51 per rated Wh vs $0.75 per rated Wh), battery life (LiFePO4, 3,000 cycles, 5-year warranty vs LiFePO4, 5-year warranty) and features (UPS (30 ms), expandable, 100 W USB-C, app vs UPS (15 ms), 100 W USB-C, app).
- Choose the BLUETTI Premium 200 V2 for AC output (2,700 W continuous AC vs 2,400 W continuous AC).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every large portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | EcoFlow DELTA 2 Max | BLUETTI Premium 200 V2 |
|---|---|---|
| Overall rating | 4.1/5 | 3.5/5 |
| Value 25% | 67 $0.51 per rated Wh | 31 $0.75 per rated Wh |
| Tested capacity 15% | 81 88% of rated capacity delivered (1 test) | 50 not yet independently tested (neutral score used) |
| Battery life 15% | 91 LiFePO4, 3,000 cycles, 5-year warranty | 70 LiFePO4, 5-year warranty |
| AC output 15% | 54 2,400 W continuous AC | 67 2,700 W continuous AC |
| Charging speed 10% | 84 0-100% on AC in 1 h 20 min | 82 0-100% on AC in 1 h 24 min |
| Portability 10% | 80 89 Wh per kg (50 lb (23 kg)) | 74 86 Wh per kg (53.4 lb (24.2 kg)) |
| Solar input 5% | 40 1,000 W max solar input | 39 1,000 W max solar input |
| Features 5% | 100 UPS (30 ms), expandable, 100 W USB-C, app | 75 UPS (15 ms), 100 W USB-C, app |
Independent capacity tests
EcoFlow DELTA 2 Max
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| StorageReview | 1,800 Wh | 88% | AC discharge at a 350W load. Recharge took 2,370 Wh from the wall. |
BLUETTI Premium 200 V2
No independent test published yet.
Specifications
| EcoFlow DELTA 2 Max | BLUETTI Premium 200 V2 | |
|---|---|---|
| Battery | ||
| Rated capacity | 2,048 Wh | 2,073.6 Wh |
| Tested usable capacity | 1,800 Wh (88%) | - |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 3,000 to 80% | - |
| Expandable | Yes, up to 6,144 Wh | No |
| Output | ||
| AC output | 2,400 W (4,800 W surge) | 2,700 W |
| Boost mode (resistive loads) | 3,400 W | 3,900 W |
| AC outlets | 6 total | 4 total |
| 120V 20A outlets (NEMA 5-20R) | 6 | 4 |
| AC waveform | Pure sine wave | Pure sine wave |
| USB-C ports | 2 (up to 100 W each) | 2 (up to 100 W each) |
| USB-A ports | 4 | 2 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 2 | 0 |
| UPS / pass-through | Yes (30 ms switchover) | Yes (15 ms switchover) |
| Charging | ||
| AC charging | 1,800 W | 1,800 W |
| Full AC charge time | 1 h 20 min (0-80% in 1.1 h on AC alone; 43 min with AC and solar together) | 1 h 24 min (0-80% in about 1 h; AC + solar up to 2400W) |
| Max solar input | 1,000 W | 1,000 W |
| Solar input voltage | 11-60V, 15A (2 inputs, 500W each) | 12-60V, 20A |
| Car charging | 96 W | 192 W |
| Build | ||
| Weight | 50 lb (23 kg) | 53.4 lb (24.2 kg) |
| Dimensions | 19.6 x 9.5 x 12 in | 13.78 x 9.84 x 12.74 in |
| App | EcoFlow app (Wi-Fi and Bluetooth) | Wi-Fi + Bluetooth |
| Warranty | 5 years | 5 years |
| Released | 2023-05 | 2025-04 |