FOSSiBOT F3600 Pro
#6 in Home backupFull review
A large home-backup station for buyers who want lots of capacity and solar input at a low price per watt-hour, and don’t need to move it often.
Amazon $1,139 FOSSiBOT $1,219$1,139
The FOSSiBOT F3600 Pro and the FOSSiBOT F7200 are evenly matched, rated 4.0 and 4.0. The FOSSiBOT F3600 Pro leads on value, portability and charging speed. The FOSSiBOT F7200 wins on AC output and solar input. The FOSSiBOT F3600 Pro costs $1,310 less ($1,139 vs $2,449).
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
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 F3600 Pro for value ($0.30 per rated Wh vs $0.47 per rated Wh), portability (91 Wh per kg (92.6 lb (42 kg)) vs 75 Wh per kg (154.3 lb (70 kg))) and charging speed (0-100% on AC in 3 h vs 0-100% on AC in 3 h 30 min).
- 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).
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 F3600 Pro | FOSSiBOT F7200 |
|---|---|---|
| Overall rating | 4.0/5 | 4.0/5 |
| Value 25% | 100 $0.30 per rated Wh | 74 $0.47 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, 6,500 cycles, 5-year warranty |
| AC output 15% | 37 3,600 W continuous AC | 100 7,200 W continuous AC |
| Charging speed 10% | 32 0-100% on AC in 3 h | 16 0-100% on AC in 3 h 30 min |
| Portability 10% | 84 91 Wh per kg (92.6 lb (42 kg)) | 54 75 Wh per kg (154.3 lb (70 kg)) |
| Solar input 5% | 44 2,000 W max solar input | 66 3,700 W max solar input |
| Features 5% | 100 UPS (10 ms), expandable, 100 W USB-C, app | 100 UPS (10 ms), expandable, 100 W USB-C, app |
Specifications
| FOSSiBOT F3600 Pro | FOSSiBOT F7200 | |
|---|---|---|
| Battery | ||
| Rated capacity | 3,840 Wh | 5,222 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 6,500 to 80% per product description and Amazon; US spec table says to 50% | 6,500 to 80% |
| Expandable | Yes, up to 11,520 Wh | Yes, up to 15,667 Wh |
| Output | ||
| AC output | 3,600 W (7,200 W surge) | 7,200 W (9,000 W surge) |
| AC outlets | 5 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 |
| AC waveform | Pure sine wave | - |
| USB-C ports | 4 (up to 100 W each) | 2 (up to 100 W each) |
| USB-A ports | 2 | 1 |
| 12 V car outlet | Yes | No |
| DC5521 ports | 2 | - |
| UPS / pass-through | Yes (10 ms switchover) | Yes (10 ms switchover) |
| Charging | ||
| AC charging | 1,500 W | 1,800 W |
| Full AC charge time | 3 h (Manufacturer: about 3 hours on AC; 1 h 50 min with AC + solar (3500W)) | 3 h 30 min (Manufacturer: about 3.5 hours at 120V; 3000W at 240V in about 2.2 hours) |
| Max solar input | 2,000 W | 3,700 W |
| Solar input voltage | 12-160V, 20A | 120-450V, 2500W (HV) + 12-55V, 1200W (LV) |
| Car charging | 120 W | 200 W |
| Build | ||
| Weight | 92.6 lb (42 kg) | 154.3 lb (70 kg) |
| Dimensions | 24.0 x 12.6 x 18.7 in | 26.4 x 17.7 x 16.1 in |
| App | FOSSiBOT app | FOSSiBOT app |
| Warranty | 5 years | 5 years |