BLUETTI Apex 300
#15 in LargeFull review
For homeowners who want a 240V-capable backup battery that grows with expansion packs, not a grab-and-go unit.
Amazon $1,498.98 BLUETTI $1,499$1,498.98
The BLUETTI Apex 300 rates 4.0 among large portable power stations; the EcoFlow DELTA Pro Ultra rates 3.8 among home backup ones. The BLUETTI Apex 300 costs $2,700.02 less ($1,498.98 vs $4,199).
EcoFlow DELTA Pro Ultra
#13 in Home backupFull review
A modular 6kWh home-backup system for buyers who need 240V output and plan to expand. Overkill for camping or short outages.
Amazon $4,199 EcoFlow $4,199$4,199
Prices were last checked October 20, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different size classes (large and home backup), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | BLUETTI Apex 300 | EcoFlow DELTA Pro Ultra |
|---|---|---|
| Overall rating | 4.0/5 | 3.8/5 |
| Value 25% | 63 $0.54 per rated Wh | 41 $0.68 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Battery life 15% | 100 LiFePO4, 6,000 cycles, 5-year warranty | 96 LiFePO4, 3,500 cycles, 5-year warranty |
| AC output 15% | 100 3,840 W continuous AC | 100 7,200 W continuous AC |
| Charging speed 10% | 50 full AC charge time not published (neutral score used) | 50 full AC charge time not published (neutral score used) |
| Portability 10% | 50 73 Wh per kg (83.8 lb (38 kg)) | 54 75 Wh per kg (181.8 lb (82.4 kg)) |
| Solar input 5% | 84 2,400 W max solar input | 90 5,600 W max solar input |
| Features 5% | 80 UPS (0 ms), expandable, app | 100 UPS (0 ms), expandable, 100 W USB-C, app |
Specifications
| BLUETTI Apex 300 | EcoFlow DELTA Pro Ultra | |
|---|---|---|
| Battery | ||
| Rated capacity | 2,764.8 Wh | 6,144 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 6,000 to 80% | 3,500 to 80% |
| Expandable | Yes, up to 19,353.6 Wh | Yes, up to 30,000 Wh |
| Output | ||
| AC output | 3,840 W (7,680 W surge) | 7,200 W (10,800 W surge) |
| AC outlets | 6 total | 6 total |
| 120V 20A outlets (NEMA 5-20R) | 4 | 4 |
| RV 30A outlet (TT-30R) | 1 | 1 |
| 120/240V 30A twist-lock (NEMA L14-30R) | - | 1 |
| 120/240V 50A outlet (NEMA 14-50R) | 1 | - |
| AC waveform | - | Pure sine wave, 120/240V split phase |
| USB-C ports | 0 | 2 (up to 100 W each) |
| USB-A ports | 0 | 2 |
| 12 V car outlet | No | - |
| DC5521 ports | 0 | - |
| UPS / pass-through | Yes (0 ms switchover) | Yes (0 ms switchover) |
| Charging | ||
| AC charging | 1,800 W | - |
| Max solar input | 2,400 W | 5,600 W |
| Solar input voltage | 2 inputs, 12-60V, 20A each | High-voltage 80-450V (4000W) and low-voltage 30-150V (1600W) |
| Build | ||
| Weight | 83.8 lb (38 kg) | 181.8 lb (82.4 kg) |
| Dimensions | 20.67 x 12.87 x 12.6 in | Inverter 27.2 x 18.9 x 8.4 in; battery 26 x 18 x 8 in |
| App | Wi-Fi + Bluetooth | EcoFlow app (Bluetooth, Wi-Fi and 4G) |
| Warranty | 5 years | 5 years |