EcoFlow DELTA 3 vs Anker SOLIX F2600
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 $850 less. Whether that gap is worth closing depends on what you need to run.
- Anker SOLIX F2600 holds 150% more energy (2560Wh vs 1024Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 has 800W more surge headroom (3600W vs 2800W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 3 is 33.0 lb lighter (28.7 lb vs 61.7 lb).
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
Anker SOLIX F2600
An odd spec sheet: 2560Wh of capacity but only 2800W surge — the lowest surge-to-capacity ratio here. Capacity without starting power.
Best for: Long-duration backup of steady loads (lights, electronics, CPAP) rather than motor-driven appliances.
Where it falls short:
- 2800W surge is barely above its 2400W continuous — it will struggle with pumps
- 61.7 lb
| Spec | EcoFlow DELTA 3 | Anker SOLIX F2600 |
|---|---|---|
| Price | $649 | $1499 |
| Capacity | 1024 Wh | 2560 Wh |
| Continuous output | 1800 W | 2400 W |
| Surge output | 3600 W | 2800 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 4,000 |
| Weight (lighter wins) | 28.7 lb | 61.7 lb |
| Max solar | 500 W | 1000 W |
| Recharge time (faster wins) | 56 min | 1h 30m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 | Anker SOLIX F2600 |
|---|---|---|
| Refrigerator | 14.5 hrs | 36.3 hrs |
| Mini fridge | 27.6 hrs | 69.1 hrs |
| Chest freezer | 10.9 hrs | 27.2 hrs |
| CPAP machine | 21.8 hrs | 54.4 hrs |
| Sump pump | 1.1 hrs | ❌ |