FOSSiBOT F7200
#7 in Home backupFull review
A 240V home-backup station for buyers who want to run a home circuit or well pump through outages at a lower price than the big-name brands.
Amazon $2,449 FOSSiBOT $2,899$2,449
The FOSSiBOT F7200 is the better portable power station overall, rated 4.0 to 3.9. The FOSSiBOT F7200 leads on AC output and solar input. The Growatt HELIOS 3600 wins on value, charging speed and portability. The Growatt HELIOS 3600 costs $1,250.02 less ($1,198.98 vs $2,449).
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.
Which should you buy?
- Choose the FOSSiBOT F7200 for AC output (7,200 W continuous AC vs 3,600 W continuous AC) and solar input (3,700 W max solar input vs 2,000 W max solar input).
- Choose the Growatt HELIOS 3600 for value ($0.33 per rated Wh vs $0.47 per rated Wh), charging speed (0-100% on AC in 3 h vs 0-100% on AC in 3 h 30 min) and portability (82 Wh per kg (99 lb (45 kg)) vs 75 Wh per kg (154.3 lb (70 kg))).
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 | FOSSiBOT F7200 | Growatt HELIOS 3600 |
|---|---|---|
| Overall rating | 4.0/5 | 3.9/5 |
| Value 25% | 74 $0.47 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, 6,500 cycles, 5-year warranty | 100 LiFePO4, 4,000 cycles, 5-year warranty |
| AC output 15% | 100 7,200 W continuous AC | 37 3,600 W continuous AC |
| Charging speed 10% | 16 0-100% on AC in 3 h 30 min | 32 0-100% on AC in 3 h |
| Portability 10% | 54 75 Wh per kg (154.3 lb (70 kg)) | 67 82 Wh per kg (99 lb (45 kg)) |
| Solar input 5% | 66 3,700 W max solar input | 46 2,000 W max solar input |
| Features 5% | 100 UPS (10 ms), expandable, 100 W USB-C, app | 100 UPS (20 ms), expandable, 100 W USB-C, app |
Specifications
| FOSSiBOT F7200 | Growatt HELIOS 3600 | |
|---|---|---|
| Battery | ||
| Rated capacity | 5,222 Wh | 3,686 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 6,500 to 80% | 4,000 4000+ cycles; end-of-life capacity not stated |
| Expandable | Yes, up to 15,667 Wh | Yes |
| Output | ||
| AC output | 7,200 W (9,000 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 |
| 120/240V 30A twist-lock (NEMA L14-30R) | 1 | - |
| 120/240V 50A outlet (NEMA 14-50R) | 1 | - |
| 240V 20A outlet (NEMA 6-20R) | - | 1 |
| USB-C ports | 2 (up to 100 W each) | 4 (up to 100 W each) |
| USB-A ports | 1 | 2 |
| 12 V car outlet | No | Yes |
| DC5521 ports | - | 2 |
| UPS / pass-through | Yes (10 ms switchover) | Yes (20 ms switchover) |
| Charging | ||
| AC charging | 1,800 W | 1,800 W |
| Full AC charge time | 3 h 30 min (Manufacturer: about 3.5 hours at 120V; 3000W at 240V in about 2.2 hours) | 3 h (About 3 h from 120V at 1800W, or 1.5 h from 240V at 3600W (manufacturer)) |
| Max solar input | 3,700 W | 2,000 W |
| Solar input voltage | 120-450V, 2500W (HV) + 12-55V, 1200W (LV) | 12-60V |
| Car charging | 200 W | - |
| Build | ||
| Weight | 154.3 lb (70 kg) | 99 lb (45 kg) |
| Dimensions | 26.4 x 17.7 x 16.1 in | 20.4 x 12.3 x 16.5 in |
| App | FOSSiBOT app | myGro app (Wi-Fi and Bluetooth) |
| Warranty | 5 years | 5 years |