EcoFlow DELTA 3 Ultra Plus 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
Anker SOLIX F2600 costs $500 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Ultra Plus holds 20% more energy (3072Wh vs 2560Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra Plus has 4400W more surge headroom (7200W vs 2800W) — that decides whether a fridge, pump or AC compressor will actually start.
- Anker SOLIX F2600 is 23.8 lb lighter (61.7 lb vs 85.5 lb).
The Ultra's solar problem solved: same everything, but 1600W of PV input instead of 800W. That doubles your off-grid refill speed for $200.
Best for: Off-grid cabins and van builds that actually recharge from panels.
Where it falls short:
- $1999 approaches DELTA Pro 3 pricing
- 85.5 lb
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 Ultra Plus | Anker SOLIX F2600 |
|---|---|---|
| Price | $1999 | $1499 |
| Capacity | 3072 Wh | 2560 Wh |
| Continuous output | 3600 W | 2400 W |
| Surge output | 7200 W | 2800 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 4,000 |
| Weight (lighter wins) | 85.5 lb | 61.7 lb |
| Max solar | 1600 W | 1000 W |
| Recharge time (faster wins) | 1h 30m | 1h 30m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra Plus | Anker SOLIX F2600 |
|---|---|---|
| Refrigerator | 43.5 hrs | 36.3 hrs |
| Mini fridge | 82.9 hrs | 69.1 hrs |
| Chest freezer | 32.6 hrs | 27.2 hrs |
| CPAP machine | 65.3 hrs | 54.4 hrs |
| Sump pump | 3.3 hrs | ❌ |