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 $1,499The BLUETTI Apex 300 rates 4.1 among large portable power stations; the BLUETTI Elite 400 rates 3.6 among home backup ones. The BLUETTI Elite 400 costs $99.98 less ($1,399 vs $1,498.98).

For home-backup buyers who want nearly 4 kWh in one rolling unit without adding expansion batteries.
Amazon $1,449 BLUETTI $1,399Prices 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.
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 | BLUETTI Elite 400 |
|---|---|---|
| Overall rating | 4.1/5 | 3.6/5 |
| Value 25% | 63 $0.54 per rated Wh | 90 $0.36 per rated Wh |
| Tested capacity 15% | 68 85% of rated capacity delivered (1 test) | 42 79% of rated capacity delivered (2 tests) |
| Battery life 15% | 100 LiFePO4, 6,000 cycles, 5-year warranty | 70 LiFePO4, 5-year warranty |
| AC output 15% | 100 3,840 W continuous AC | 7 2,600 W continuous AC |
| Charging speed 10% | 50 full AC charge time not published (neutral score used) | 47 0-100% on AC in 2 h 30 min |
| Portability 10% | 50 73 Wh per kg (83.8 lb (38 kg)) | 97 98 Wh per kg (86 lb (39 kg)) |
| Solar input 5% | 84 2,400 W max solar input | 13 1,000 W max solar input |
| Features 5% | 80 UPS (0 ms), expandable, app | 75 UPS (15 ms), 100 W USB-C, app |
Independent capacity tests
BLUETTI Apex 300
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| The Solar Lab | - | 85% | Efficiency calculated from a variety of loads through the AC outlets; idle draw about 20W. |
BLUETTI Elite 400
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| The Solar Lab | - | 77% | Efficiency test (load not stated in the review); idle draw about 20W. Measured AC recharge 0-100% in 2 h 27 min. |
| Notebookcheck | 3,130 Wh | 82% | EU 230V version drained with a continuous AC load of about 250W (just under 82% of capacity); the reviewer reports efficiency rising to about 93% at an 1,800W load. Recharge drew just under 4,400 Wh from the mains. |
Specifications
| BLUETTI Apex 300 | BLUETTI Elite 400 | |
|---|---|---|
| Battery | ||
| Rated capacity | 2,764.8 Wh | 3,840 Wh |
| Tested usable capacity | 2,350 Wh (85%) | 3,043 Wh (79%) |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 6,000 to 80% | - |
| Expandable | Yes, up to 19,353.6 Wh | No |
| Output | ||
| AC output | 3,840 W (7,680 W surge) | 2,600 W (5,200 W surge) |
| Boost mode (resistive loads) | - | 3,900 W |
| AC outlets | 6 total | 4 total |
| 120V 20A outlets (NEMA 5-20R) | 4 | 4 |
| RV 30A outlet (TT-30R) | 1 | - |
| 120/240V 50A outlet (NEMA 14-50R) | 1 | - |
| AC waveform | Pure sine wave | Pure sine wave |
| USB-C ports | 0 | 2 (up to 100 W each) |
| USB-A ports | 0 | 2 |
| 12 V car outlet | No | Yes |
| DC5521 ports | 0 | 0 |
| UPS / pass-through | Yes (0 ms switchover) | Yes (15 ms switchover) |
| Charging | ||
| AC charging | 1,800 W | 1,800 W |
| Full AC charge time | - | 2 h 30 min (0-80% in about 1 h 55 min in Turbo mode; AC + solar up to 2800W) |
| Max solar input | 2,400 W | 1,000 W |
| Solar input voltage | 2 inputs, 12-60V, 20A each | 12-60V, 20A |
| Car charging | 192 W | - |
| Build | ||
| Weight | 83.8 lb (38 kg) | 86 lb (39 kg) |
| Dimensions | 20.67 x 12.87 x 12.6 in | 16.8 x 11.3 x 19.3 in |
| App | Wi-Fi + Bluetooth | Wi-Fi + Bluetooth |
| Warranty | 5 years | 5 years |
| Released | 2025-08 | 2026-07 |