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 4.0 among large portable power stations; the Anker SOLIX F3800 rates 3.7 among home backup ones. The BLUETTI Apex 300 costs $701.01 less ($1,498.98 vs $2,199.99).

For homeowners who want 240V backup that can grow into a whole-home battery, and who do not need the extra solar input of the F3800 Plus.
Amazon Anker $2,199.99Prices 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 | Anker SOLIX F3800 |
|---|---|---|
| Overall rating | 4.0/5 | 3.7/5 |
| Value 25% | 63 $0.54 per rated Wh | 58 $0.57 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 35 78% of rated capacity delivered (1 test) |
| Battery life 15% | 100 LiFePO4, 6,000 cycles, 5-year warranty | 91 LiFePO4, 3,000 cycles, 5-year warranty |
| AC output 15% | 100 3,840 W continuous AC | 83 6,000 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)) | 35 64 Wh per kg (132.3 lb (60 kg)) |
| Solar input 5% | 84 2,400 W max solar input | 56 2,400 W max solar input |
| Features 5% | 80 UPS (0 ms), expandable, app | 100 UPS (20 ms), expandable, 100 W USB-C, app |
Independent capacity tests
BLUETTI Apex 300
No independent test published yet.
Anker SOLIX F3800
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| StorageReview | 2,980 Wh | 78% | Full discharge until the inverter cut off; load not stated. Recharge from 0 to 100% took 4,930 Wh from the wall. |
Specifications
| BLUETTI Apex 300 | Anker SOLIX F3800 | |
|---|---|---|
| Battery | ||
| Rated capacity | 2,764.8 Wh | 3,840 Wh |
| Tested usable capacity | - | 2,980 Wh (78%) |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 6,000 to 80% | 3,000 to 80% |
| Expandable | Yes, up to 19,353.6 Wh | Yes, up to 26,880 Wh |
| Output | ||
| AC output | 3,840 W (7,680 W surge) | 6,000 W (9,000 W surge) |
| AC outlets | 6 total | 8 total |
| 120V 20A outlets (NEMA 5-20R) | 4 | 6 |
| RV 30A outlet (TT-30R) | 1 | - |
| 120/240V 30A twist-lock (NEMA L14-30R) | - | 1 |
| 120/240V 50A outlet (NEMA 14-50R) | 1 | 1 |
| USB-C ports | 0 | 3 (up to 100 W each) |
| USB-A ports | 0 | 2 |
| 12 V car outlet | No | Yes |
| DC5521 ports | 0 | - |
| UPS / pass-through | Yes (0 ms switchover) | Yes (20 ms switchover) |
| Charging | ||
| AC charging | 1,800 W | 1,800 W |
| Max solar input | 2,400 W | 2,400 W |
| Solar input voltage | 2 inputs, 12-60V, 20A each | 11-60V, 2 inputs at 1200W each |
| Build | ||
| Weight | 83.8 lb (38 kg) | 132.3 lb (60 kg) |
| Dimensions | 20.67 x 12.87 x 12.6 in | 27.6 x 15.3 x 15.6 in |
| App | Wi-Fi + Bluetooth | Anker app |
| Warranty | 5 years | 5 years |