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 Growatt HELIOS 3600 rates 3.9 among home backup ones. The Growatt HELIOS 3600 costs $300 less ($1,198.98 vs $1,498.98).
Growatt HELIOS 3600
#10 in Home backupFull review
A 3.7 kWh home backup station for buyers who want 240V from one unit and the option to grow toward whole-home backup. At the Amazon price it is one of the cheaper ways to get that much LiFePO4 capacity.
Amazon $1,198.98 Growatt $1,599$1,198.98
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 | Growatt HELIOS 3600 |
|---|---|---|
| Overall rating | 4.0/5 | 3.9/5 |
| Value 25% | 63 $0.54 per rated Wh | 96 $0.33 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 | 100 LiFePO4, 4,000 cycles, 5-year warranty |
| AC output 15% | 100 3,840 W continuous AC | 37 3,600 W continuous AC |
| Charging speed 10% | 50 full AC charge time not published (neutral score used) | 32 0-100% on AC in 3 h |
| Portability 10% | 50 73 Wh per kg (83.8 lb (38 kg)) | 67 82 Wh per kg (99 lb (45 kg)) |
| Solar input 5% | 84 2,400 W max solar input | 46 2,000 W max solar input |
| Features 5% | 80 UPS (0 ms), expandable, app | 100 UPS (20 ms), expandable, 100 W USB-C, app |
Specifications
| BLUETTI Apex 300 | Growatt HELIOS 3600 | |
|---|---|---|
| Battery | ||
| Rated capacity | 2,764.8 Wh | 3,686 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 6,000 to 80% | 4,000 4000+ cycles; end-of-life capacity not stated |
| Expandable | Yes, up to 19,353.6 Wh | Yes |
| Output | ||
| AC output | 3,840 W (7,680 W surge) | 3,600 W |
| Boost mode (resistive loads) | - | 4,500 W |
| AC outlets | 6 total | 6 total |
| 120V 20A outlets (NEMA 5-20R) | 4 | 4 |
| RV 30A outlet (TT-30R) | 1 | 1 |
| 120/240V 50A outlet (NEMA 14-50R) | 1 | - |
| 240V 20A outlet (NEMA 6-20R) | - | 1 |
| USB-C ports | 0 | 4 (up to 100 W each) |
| USB-A ports | 0 | 2 |
| 12 V car outlet | No | Yes |
| DC5521 ports | 0 | 2 |
| UPS / pass-through | Yes (0 ms switchover) | Yes (20 ms switchover) |
| Charging | ||
| AC charging | 1,800 W | 1,800 W |
| Full AC charge time | - | 3 h (About 3 h from 120V at 1800W, or 1.5 h from 240V at 3600W (manufacturer)) |
| Max solar input | 2,400 W | 2,000 W |
| Solar input voltage | 2 inputs, 12-60V, 20A each | 12-60V |
| Build | ||
| Weight | 83.8 lb (38 kg) | 99 lb (45 kg) |
| Dimensions | 20.67 x 12.87 x 12.6 in | 20.4 x 12.3 x 16.5 in |
| App | Wi-Fi + Bluetooth | myGro app (Wi-Fi and Bluetooth) |
| Warranty | 5 years | 5 years |