Allpowers R4000 vs Fossibot F2400
Side-by-side on the specs that decide it — surge, capacity, runtime and price.
Both models' specs verified against manufacturer listings · Last updated
The short answer
Fossibot F2400 costs $1400 less. Whether that gap is worth closing depends on what you need to run.
- Allpowers R4000 holds 69% more energy (3456Wh vs 2048Wh), so it runs the same load proportionally longer.
- Allpowers R4000 has 1200W more surge headroom (6000W vs 4800W) — that decides whether a fridge, pump or AC compressor will actually start.
- Fossibot F2400 is 57.5 lb lighter (48.5 lb vs 106 lb).
Allpowers R4000
A large expandable unit that undercuts the EcoFlow Delta Pro 3 on price while matching its 4,000W output — the trade is a less established support network.
Best for: Whole-home backup buyers prioritising price per watt over brand.
Where it falls short:
- 106 lb
- Brand support and resale trail the big names
Fossibot F2400
A value-brand 2kWh that undercuts the majors sharply while matching them on the specs that matter — 2,400W output and a strong 4,800W surge.
Best for: Bargain hunters who want high surge and 2kWh for the least money.
Where it falls short:
- 500W solar input is low for 2kWh
- Support network trails the majors
| Spec | Allpowers R4000 | Fossibot F2400 |
|---|---|---|
| Price | $2299 | $899 |
| Capacity | 3456 Wh | 2048 Wh |
| Continuous output | 4000 W | 2200 W |
| Surge output | 6000 W | 4800 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,500 | 3,500 |
| Weight (lighter wins) | 106 lb | 48.5 lb |
| Max solar | 2000 W | 500 W |
| Recharge time (faster wins) | 1h 30m | 1h 30m |
Runtime head-to-head
| Appliance | Allpowers R4000 | Fossibot F2400 |
|---|---|---|
| Refrigerator | 49.0 hrs | 29.0 hrs |
| Mini fridge | 93.3 hrs | 55.3 hrs |
| Chest freezer | 36.7 hrs | 21.8 hrs |
| CPAP machine | 73.4 hrs | 43.5 hrs |
| Sump pump | 3.7 hrs | 2.2 hrs |