FOSSiBOT F2400
#6 in LargeFull review
A low-cost 2kWh station for home backup and RV use when price per watt-hour matters more than charging speed.
Amazon $579 FOSSiBOT $609$579
The FOSSiBOT F2400 is the better portable power station overall, rated 4.2 to 4.0. The FOSSiBOT F2400 leads on portability. The ALLPOWERS R2500 V2 wins on solar input and charging speed. The FOSSiBOT F2400 costs $61 less ($579 vs $640).
ALLPOWERS R2500 V2
#15 in LargeFull review
A budget 2 kWh LiFePO4 station for home backup and RV use, for buyers who put price first and can lift a 64 lb box.
Amazon $640$640
Prices were last checked October 24, 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 F2400 for portability (93 Wh per kg (48.5 lb (22 kg)) vs 66 Wh per kg (63.9 lb (29 kg))).
- Choose the ALLPOWERS R2500 V2 for solar input (1,000 W max solar input vs 500 W max solar input) and charging speed (0-100% on AC in 1 h 30 min vs 0-100% on AC in 2 h).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every large portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | FOSSiBOT F2400 | ALLPOWERS R2500 V2 |
|---|---|---|
| Overall rating | 4.2/5 | 4.0/5 |
| Value 25% | 100 $0.28 per rated Wh | 95 $0.33 per rated Wh |
| Tested capacity 15% | 64 84% of rated capacity delivered (2 tests) | 50 not yet independently tested (neutral score used) |
| Battery life 15% | 100 LiFePO4, 4,000 cycles, 5-year warranty | 96 LiFePO4, 3,500 cycles, 5-year warranty |
| AC output 15% | 54 2,400 W continuous AC | 58 2,500 W continuous AC |
| Charging speed 10% | 63 0-100% on AC in 2 h | 79 0-100% on AC in 1 h 30 min |
| Portability 10% | 87 93 Wh per kg (48.5 lb (22 kg)) | 39 66 Wh per kg (63.9 lb (29 kg)) |
| Solar input 5% | 11 500 W max solar input | 44 1,000 W max solar input |
| Features 5% | 75 UPS (8 ms), 100 W USB-C, app | 75 UPS (15 ms), 100 W USB-C, app |
Independent capacity tests
FOSSiBOT F2400
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| techtest.org | 1,781 Wh | 87% | European 230V model, AC outlets at a 1,200W load (from the review’s capacity chart). Other AC runs: 1,717 Wh at 2,000W and 1,512 Wh at 100W. Full AC recharge took about 2 h 45 min at the 1,100W setting. |
| nextpit | 1,659 Wh | 81% | Full discharge of the European 230V model (load not stated); 2,127 Wh from the wall to recharge, about 78% round trip. |
ALLPOWERS R2500 V2
No independent test published yet.
Specifications
| FOSSiBOT F2400 | ALLPOWERS R2500 V2 | |
|---|---|---|
| Battery | ||
| Rated capacity | 2,048 Wh | 1,920 Wh |
| Tested usable capacity | 1,720 Wh (84%) | - |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 4,000 to 80%; US spec says 4000+, FOSSiBOT's global spec table says 3500 | 3,500 to 80% (Amazon listing) |
| Expandable | No | No |
| Output | ||
| AC output | 2,400 W (4,800 W surge) | 2,500 W (4,000 W surge) |
| AC outlets | 6 total | 5 total |
| 120V 20A outlets (NEMA 5-20R) | 6 | 4 |
| RV 30A outlet (TT-30R) | - | 1 |
| AC waveform | Pure sine wave | Pure sine wave |
| USB-C ports | 4 (up to 100 W each) | 2 (up to 100 W each) |
| USB-A ports | 2 | 4 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 2 | 2 |
| UPS / pass-through | Yes (8 ms switchover) | Yes (15 ms switchover) |
| Charging | ||
| AC charging | 1,100 W | 1,500 W |
| Full AC charge time | 2 h (Manufacturer: about 2 hours on AC; 1.5 hours with AC + solar (1600W)) | 1 h 30 min (about 1.5 h; manufacturer says about 97 minutes in its own test) |
| Max solar input | 500 W | 1,000 W |
| Solar input voltage | - | 12-150V, 20A |
| Car charging | 100 W | - |
| Build | ||
| Weight | 48.5 lb (22 kg) | 63.9 lb (29 kg) |
| Dimensions | 15.2 x 11.2 x 12.6 in | 17.95 x 14.17 x 13.62 in |
| App | FOSSiBOT app | ALLPOWERS app (Wi-Fi/Bluetooth) |
| Warranty | 5 years | 5 years |
| Released | 2022-11 | 2026-10 |