EcoFlow DELTA 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
EcoFlow DELTA 3 costs $250 less. Whether that gap is worth closing depends on what you need to run.
- Fossibot F2400 holds 100% more energy (2048Wh vs 1024Wh), so it runs the same load proportionally longer.
- Fossibot F2400 has 1200W more surge headroom (4800W vs 3600W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 3 is 19.8 lb lighter (28.7 lb vs 48.5 lb).
- EcoFlow DELTA 3 is rated for 4,000 cycles vs 3,500 — meaningful if you cycle it daily.
EcoFlow DELTA 3
The 1kWh class got a serious upgrade here. 3600W surge at $649 beats the older DELTA 2 on every axis that matters.
Best for: Anyone about to buy a DELTA 2 — this is the same money for materially better specs.
Where it falls short:
- Still only 1024Wh
- Solar input unchanged at 500W
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 | EcoFlow DELTA 3 | Fossibot F2400 |
|---|---|---|
| Price | $649 | $899 |
| Capacity | 1024 Wh | 2048 Wh |
| Continuous output | 1800 W | 2200 W |
| Surge output | 3600 W | 4800 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,500 |
| Weight (lighter wins) | 28.7 lb | 48.5 lb |
| Max solar | 500 W | 500 W |
| Recharge time (faster wins) | 56 min | 1h 30m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 | Fossibot F2400 |
|---|---|---|
| Refrigerator | 14.5 hrs | 29.0 hrs |
| Mini fridge | 27.6 hrs | 55.3 hrs |
| Chest freezer | 10.9 hrs | 21.8 hrs |
| CPAP machine | 21.8 hrs | 43.5 hrs |
| Sump pump | 1.1 hrs | 2.2 hrs |