BLUETTI Elite 300
#14 in Home backupFull review
For RV owners and home-backup buyers who want 3 kWh and a TT-30 outlet at a low price and can lift a 58 lb box.
Amazon $1,699 BLUETTI $1,199$1,199
The BLUETTI Elite 300 is the better portable power station overall, rated 3.9 to 3.7. The BLUETTI Elite 300 leads on battery life, tested capacity and portability. The EcoFlow DELTA 3 Ultra wins on AC output. The BLUETTI Elite 300 costs $150 less ($1,199 vs $1,349).
EcoFlow DELTA 3 Ultra
#22 in Home backupFull review
A wheeled 3kWh station for home backup or RV use at a lower price than its expandable sibling. Buy it if 3kWh is enough and you charge mostly from the wall.
Amazon $1,699 EcoFlow $1,349$1,349
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 BLUETTI Elite 300 for battery life (LiFePO4, 6,000 cycles, 5-year warranty vs LiFePO4, 5-year warranty), tested capacity (89% of rated capacity delivered (1 test) vs 82% of rated capacity delivered (1 test)) and portability (115 Wh per kg (58 lb (26.3 kg)) vs 94 Wh per kg (72.1 lb (32.7 kg))).
- Choose the EcoFlow DELTA 3 Ultra for AC output (3,600 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 home backup portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | BLUETTI Elite 300 | EcoFlow DELTA 3 Ultra |
|---|---|---|
| Overall rating | 3.9/5 | 3.7/5 |
| Value 25% | 85 $0.40 per rated Wh | 79 $0.44 per rated Wh |
| Tested capacity 15% | 84 89% of rated capacity delivered (1 test) | 55 82% of rated capacity delivered (1 test) |
| Battery life 15% | 100 LiFePO4, 6,000 cycles, 5-year warranty | 70 LiFePO4, 5-year warranty |
| AC output 15% | 0 2,400 W continuous AC | 37 3,600 W continuous AC |
| Charging speed 10% | 38 0-100% on AC in 2 h 48 min | 50 full AC charge time not published (neutral score used) |
| Portability 10% | 100 115 Wh per kg (58 lb (26.3 kg)) | 89 94 Wh per kg (72.1 lb (32.7 kg)) |
| Solar input 5% | 29 1,200 W max solar input | 13 800 W max solar input |
| Features 5% | 75 UPS (10 ms), 140 W USB-C, app | 75 UPS (10 ms), 140 W USB-C, app |
Independent capacity tests
BLUETTI Elite 300
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| StorageReview | 2,670 Wh | 88.6% | Discharge measured with a Kill-A-Watt meter (load not stated); recharge drew 3.49 kWh from the wall; UPS switchover measured at 8 ms |
EcoFlow DELTA 3 Ultra
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| The Solar Lab | - | 82% | Efficiency test (load not stated in the review). Measured AC recharge 0-100% in 2 h from a standard household outlet. |
Specifications
| BLUETTI Elite 300 | EcoFlow DELTA 3 Ultra | |
|---|---|---|
| Battery | ||
| Rated capacity | 3,014.4 Wh | 3,072 Wh |
| Tested usable capacity | 2,670 Wh (89%) | 2,519 Wh (82%) |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 6,000 to 80% | - |
| Expandable | No | No |
| Output | ||
| AC output | 2,400 W | 3,600 W (7,200 W surge) |
| Boost mode (resistive loads) | 4,800 W | 4,600 W |
| AC outlets | 5 total | 5 total |
| 120V 20A outlets (NEMA 5-20R) | 4 | 4 |
| RV 30A outlet (TT-30R) | 1 | 1 |
| AC waveform | Pure sine wave | Pure sine wave |
| USB-C ports | 2 (up to 140 W each) | 3 (up to 140 W each) |
| USB-A ports | 2 | 1 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 0 | 0 |
| UPS / pass-through | Yes (10 ms switchover) | Yes (10 ms switchover) |
| Charging | ||
| AC charging | 1,800 W | 1,800 W |
| Full AC charge time | 2 h 48 min (0-80% in about 95 min in Turbo mode; AC + solar up to 2400W) | - |
| Max solar input | 1,200 W | 800 W |
| Solar input voltage | 12-60V, 22A | - |
| Build | ||
| Weight | 58 lb (26.3 kg) | 72.1 lb (32.7 kg) |
| Dimensions | 14.41 x 12.01 x 11.71 in | 626 x 328 x 395 mm |
| App | Wi-Fi + Bluetooth | EcoFlow app (Wi-Fi and Bluetooth) |
| Warranty | 5 years | 5 years |
| Released | 2026-03 | 2025-09 |