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 3.9. The FOSSiBOT F2400 leads on value, AC output and battery life. The BLUETTI FridgePower wins on solar input and portability. The FOSSiBOT F2400 costs $320 less ($579 vs $899).
BLUETTI FridgePower
#21 in LargeFull review
For homeowners who want a set-and-forget battery backup that hides beside or behind the refrigerator. It is a poor fit for camping or job sites, where its weight, shape and two outlets work against it.
Amazon $1,699 BLUETTI $899$899
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 value ($0.28 per rated Wh vs $0.45 per rated Wh), AC output (2,400 W continuous AC vs 1,800 W continuous AC) and battery life (LiFePO4, 4,000 cycles, 5-year warranty vs LiFePO4, 4,000 cycles).
- Choose the BLUETTI FridgePower for solar input (1,000 W max solar input vs 500 W max solar input) and portability (102 Wh per kg (43.4 lb (19.7 kg)) vs 93 Wh per kg (48.5 lb (22 kg))).
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 | BLUETTI FridgePower |
|---|---|---|
| Overall rating | 4.2/5 | 3.9/5 |
| Value 25% | 100 $0.28 per rated Wh | 78 $0.45 per rated Wh |
| Tested capacity 15% | 64 84% of rated capacity delivered (2 tests) | 71 86% of rated capacity delivered (1 test) |
| Battery life 15% | 100 LiFePO4, 4,000 cycles, 5-year warranty | 85 LiFePO4, 4,000 cycles |
| AC output 15% | 54 2,400 W continuous AC | 21 1,800 W continuous AC |
| Charging speed 10% | 63 0-100% on AC in 2 h | 71 0-100% on AC in 1 h 45 min |
| Portability 10% | 87 93 Wh per kg (48.5 lb (22 kg)) | 100 102 Wh per kg (43.4 lb (19.7 kg)) |
| Solar input 5% | 11 500 W max solar input | 41 1,000 W max solar input |
| Features 5% | 75 UPS (8 ms), 100 W USB-C, app | 80 UPS (10 ms), expandable, 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. |
BLUETTI FridgePower
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| APH Networks | 1,727 Wh | 85.7% | Constant 1,016 W electric heater load from full to shutoff (1 h 42 min). Measured AC charge 0-80% in 1 h 46 min in Standard mode. |
Specifications
| FOSSiBOT F2400 | BLUETTI FridgePower | |
|---|---|---|
| Battery | ||
| Rated capacity | 2,048 Wh | 2,016 Wh |
| Tested usable capacity | 1,720 Wh (84%) | 1,727 Wh (86%) |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 4,000 to 80%; US spec says 4000+, FOSSiBOT's global spec table says 3500 | 4,000 BLUETTI rates it for over 4,000 cycles; APH Networks reports the claim as 80% capacity after 4,000 cycles |
| Expandable | No | Yes, up to 8,064 Wh |
| Output | ||
| AC output | 2,400 W (4,800 W surge) | 1,800 W (3,600 W surge) |
| Boost mode (resistive loads) | - | 3,000 W |
| AC outlets | 6 total | 2 |
| 120V 20A outlets (NEMA 5-20R) | 6 | - |
| AC waveform | Pure sine wave | - |
| USB-C ports | 4 (up to 100 W each) | 0 |
| USB-A ports | 2 | 0 |
| 12 V car outlet | Yes | No |
| DC5521 ports | 2 | 0 |
| UPS / pass-through | Yes (8 ms switchover) | Yes (10 ms switchover) |
| Charging | ||
| AC charging | 1,100 W | 1,440 W |
| Full AC charge time | 2 h (Manufacturer: about 2 hours on AC; 1.5 hours with AC + solar (1600W)) | 1 h 45 min (0-80% in 60 min, full in 105 min, as reported by APH Networks; BLUETTI's own pages read did not state a time. APH measured 0-80% in 1 h 46 min in Standard mode.) |
| Max solar input | 500 W | 1,000 W |
| Solar input voltage | - | 12-60V, 20 A max (XT60) |
| Car charging | 100 W | - |
| Build | ||
| Weight | 48.5 lb (22 kg) | 43.4 lb (19.7 kg) |
| Dimensions | 15.2 x 11.2 x 12.6 in | 22.83 x 13.78 x 3.07 in |
| App | FOSSiBOT app | BLUETTI app (Wi-Fi + Bluetooth; Alexa and Google Home) |
| Warranty | 5 years | - |
| Released | 2022-11 | 2026-06 |