FOSSiBOT F1800
#4 in Mid-sizeFull review
A budget 1kWh LiFePO4 station for camping and short outages, with fast wall charging and strong USB-C ports.
Amazon $399 FOSSiBOT $419$399
The FOSSiBOT F1800 and the Anker SOLIX C1000 are evenly matched, rated 4.4 and 4.3. The FOSSiBOT F1800 leads on value, portability and battery life. The Anker SOLIX C1000 wins on features and solar input. The FOSSiBOT F1800 costs $100.99 less ($399 vs $499.99).
Anker SOLIX C1000
#5 in Mid-sizeFull review
For campers and home users who want a fast-charging 1 kWh LiFePO4 station with the option to add a second battery, at a lower price than the Gen 2.
Amazon $499.99$499.99
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 F1800 for value ($0.39 per rated Wh vs $0.47 per rated Wh), portability (91 Wh per kg (24.8 lb (11.2 kg)) vs 82 Wh per kg (28.4 lb (12.9 kg))) and battery life (LiFePO4, 4,000 cycles, 5-year warranty vs LiFePO4, 3,000 cycles, 5-year warranty).
- Choose the Anker SOLIX C1000 for features (UPS (20 ms), expandable, 100 W USB-C, app vs UPS (10 ms), 140 W USB-C, app) and solar input (600 W max solar input vs 500 W max solar input).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every mid-size portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | FOSSiBOT F1800 | Anker SOLIX C1000 |
|---|---|---|
| Overall rating | 4.4/5 | 4.3/5 |
| Value 25% | 95 $0.39 per rated Wh | 84 $0.47 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 68 85% of rated capacity delivered (1 test) |
| Battery life 15% | 100 LiFePO4, 4,000 cycles, 5-year warranty | 91 LiFePO4, 3,000 cycles, 5-year warranty |
| AC output 15% | 82 1,800 W continuous AC | 82 1,800 W continuous AC |
| Charging speed 10% | 91 0-100% on AC in 1 h 8 min | 96 0-100% on AC in 58 min |
| Portability 10% | 84 91 Wh per kg (24.8 lb (11.2 kg)) | 67 82 Wh per kg (28.4 lb (12.9 kg)) |
| Solar input 5% | 40 500 W max solar input | 49 600 W max solar input |
| Features 5% | 75 UPS (10 ms), 140 W USB-C, app | 100 UPS (20 ms), expandable, 100 W USB-C, app |
Independent capacity tests
FOSSiBOT F1800
No independent test published yet.
Anker SOLIX C1000
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| OutdoorGearLab | 897 Wh | 85% | Full discharge through the AC outlets. |
Specifications
| FOSSiBOT F1800 | Anker SOLIX C1000 | |
|---|---|---|
| Battery | ||
| Rated capacity | 1,024 Wh | 1,056 Wh |
| Tested usable capacity | - | 897 Wh (85%) |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 4,000 to 80% | 3,000 to 80% |
| Expandable | No | Yes, up to 2,112 Wh |
| Output | ||
| AC output | 1,800 W (3,600 W surge) | 1,800 W (2,400 W surge) |
| AC outlets | 3 total | 6 total |
| 120V 15A outlets (NEMA 5-15R) | - | 5 |
| 120V 20A outlets (NEMA 5-20R) | 3 | 1 |
| AC waveform | Pure sine wave | - |
| USB-C ports | 2 (up to 140 W each) | 2 (up to 100 W each) |
| USB-A ports | 1 | 2 |
| 12 V car outlet | Yes | Yes |
| UPS / pass-through | Yes (10 ms switchover) | Yes (20 ms switchover) |
| Charging | ||
| AC charging | 1,200 W | 1,300 W |
| Full AC charge time | 1 h 8 min | 58 min (with UltraFast enabled in the app (manufacturer); OutdoorGearLab measured 65 min UltraFast and 88 min standard) |
| Max solar input | 500 W | 600 W |
| Solar input voltage | 12-60V, 15A | 11-60V |
| Car charging | 120 W | - |
| Build | ||
| Weight | 24.8 lb (11.2 kg) | 28.4 lb (12.9 kg) |
| Dimensions | 14.6 x 8.1 x 10.2 in | 14.8 x 8.07 x 10.5 in |
| App | FOSSiBOT app (Wi-Fi/Bluetooth) | Anker app |
| Warranty | 5 years | 5 years |