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 is the better portable power station overall, rated 4.0 to 3.6. The FOSSiBOT F3600 Pro leads on value, portability and battery life. The Anker SOLIX F3800 Plus wins on AC output and solar input. The FOSSiBOT F3600 Pro costs $1,460.99 less ($1,139 vs $2,599.99).
Anker SOLIX F3800 Plus
#26 in Home backupFull review
For homeowners planning a solar-backed, expandable 240V backup system rather than a portable unit.
Anker $2,599.99$2,599.99
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 $0.68 per rated Wh), portability (91 Wh per kg (92.6 lb (42 kg)) vs 62 Wh per kg (136.7 lb (62 kg))) and battery life (LiFePO4, 6,500 cycles, 5-year warranty vs LiFePO4, 3,000 cycles, 5-year warranty).
- Choose the Anker SOLIX F3800 Plus for AC output (6,000 W continuous AC vs 3,600 W continuous AC) and solar input (3,200 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 | Anker SOLIX F3800 Plus |
|---|---|---|
| Overall rating | 4.0/5 | 3.6/5 |
| Value 25% | 100 $0.30 per rated Wh | 42 $0.68 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 | 91 LiFePO4, 3,000 cycles, 5-year warranty |
| AC output 15% | 37 3,600 W continuous AC | 83 6,000 W continuous AC |
| Charging speed 10% | 32 0-100% on AC in 3 h | 50 full AC charge time not published (neutral score used) |
| Portability 10% | 84 91 Wh per kg (92.6 lb (42 kg)) | 31 62 Wh per kg (136.7 lb (62 kg)) |
| Solar input 5% | 44 2,000 W max solar input | 80 3,200 W max solar input |
| Features 5% | 100 UPS (10 ms), expandable, 100 W USB-C, app | 80 UPS (20 ms), expandable, 100 W USB-C |
Specifications
| FOSSiBOT F3600 Pro | Anker SOLIX F3800 Plus | |
|---|---|---|
| Battery | ||
| Rated capacity | 3,840 Wh | 3,840 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 6,500 to 80% per product description and Amazon; US spec table says to 50% | 3,000 |
| Expandable | Yes, up to 11,520 Wh | Yes, up to 53,800 Wh |
| Output | ||
| AC output | 3,600 W (7,200 W surge) | 6,000 W |
| AC outlets | 5 total | 8 total |
| 120V 20A outlets (NEMA 5-20R) | 4 | 6 |
| RV 30A outlet (TT-30R) | 1 | 1 |
| 120/240V 30A twist-lock (NEMA L14-30R) | - | 1 |
| AC waveform | Pure sine wave | - |
| USB-C ports | 4 (up to 100 W each) | - |
| USB-A ports | 2 | - |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 2 | - |
| UPS / pass-through | Yes (10 ms switchover) | Yes (20 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)) | - |
| Max solar input | 2,000 W | 3,200 W |
| Solar input voltage | 12-160V, 20A | 11-165V, 2 inputs at 1600W each |
| Car charging | 120 W | - |
| Build | ||
| Weight | 92.6 lb (42 kg) | 136.7 lb (62 kg) |
| Dimensions | 24.0 x 12.6 x 18.7 in | 27.6 x 15.3 x 15.6 in |
| App | FOSSiBOT app | - |
| Warranty | 5 years | 5 years |