EcoFlow DELTA Pro 3 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 $2800 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA Pro 3 holds 100% more energy (4096Wh vs 2048Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA Pro 3 has 3200W more surge headroom (8000W vs 4800W) — that decides whether a fridge, pump or AC compressor will actually start.
- Fossibot F2400 is 64.5 lb lighter (48.5 lb vs 113 lb).
- EcoFlow DELTA Pro 3 is rated for 4,000 cycles vs 3,500 — meaningful if you cycle it daily.
The EcoFlow DELTA Pro 3 is poor value on paper: 1.11 Wh per dollar versus 2.28 for the Fossibot F2400. Only worth it if you specifically need its higher output or 240V capability — otherwise you're paying a large premium per watt-hour.
The most complete large unit here. 4096Wh, 4000W, 8000W surge and 2600W of solar — it does everything the F3800 does with less weight.
Best for: Whole-home backup buyers who want maximum solar recharge speed.
Where it falls short:
- $3,699 is a serious investment
- Overkill unless you're backing up a whole home
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 | EcoFlow DELTA Pro 3 | Fossibot F2400 |
|---|---|---|
| Price | $3699 | $899 |
| Capacity | 4096 Wh | 2048 Wh |
| Continuous output | 4000 W | 2200 W |
| Surge output | 8000 W | 4800 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,500 |
| Weight (lighter wins) | 113 lb | 48.5 lb |
| Max solar | 2600 W | 500 W |
| Recharge time (faster wins) | 1h 40m | 1h 30m |
Runtime head-to-head
| Appliance | EcoFlow DELTA Pro 3 | Fossibot F2400 |
|---|---|---|
| Refrigerator | 58.0 hrs | 29.0 hrs |
| Mini fridge | 110.5 hrs | 55.3 hrs |
| Chest freezer | 43.5 hrs | 21.8 hrs |
| CPAP machine | 87.0 hrs | 43.5 hrs |
| Sump pump | 4.4 hrs | 2.2 hrs |