Anker SOLIX F3800 vs EcoFlow DELTA Max 2000
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 Max 2000 costs $2900 less. Whether that gap is worth closing depends on what you need to run.
- Anker SOLIX F3800 holds 90% more energy (3840Wh vs 2016Wh), so it runs the same load proportionally longer.
- Anker SOLIX F3800 has 5600W more surge headroom (9000W vs 3400W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA Max 2000 is 84.3 lb lighter (48 lb vs 132.3 lb).
- Anker SOLIX F3800 uses LiFePO4 while the other uses NMC — roughly double the usable cycle life.
- Anker SOLIX F3800 is rated for 4,000 cycles vs 800 — meaningful if you cycle it daily.
The Anker SOLIX F3800 is poor value on paper: 0.96 Wh per dollar versus 1.83 for the EcoFlow DELTA Max 2000. Only worth it if you specifically need its higher output or 240V capability — otherwise you're paying a large premium per watt-hour.
This is where portable power stops being portable and starts replacing a standby generator. The 240V split-phase output is the headline feature.
Best for: Whole-home backup where you need 240V loads and can't run a gas generator.
Where it falls short:
- 132 lb — this is a wheeled appliance, not something you carry
- $3,999 puts it against real standby generators
The previous-generation 2kWh EcoFlow. Still capable and expandable, but its NMC cells and 800-cycle rating are a real step below the LiFePO4 DELTA 3 that replaced it.
Best for: Only at a steep discount against the DELTA 3 Max.
Where it falls short:
- NMC — roughly 800 cycles vs 4,000 for the DELTA 3 Max
- 2-year warranty
| Spec | Anker SOLIX F3800 | EcoFlow DELTA Max 2000 |
|---|---|---|
| Price | $3999 | $1099 |
| Capacity | 3840 Wh | 2016 Wh |
| Continuous output | 6000 W | 2400 W |
| Surge output | 9000 W | 3400 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 4,000 | 800 |
| Weight (lighter wins) | 132.3 lb | 48 lb |
| Max solar | 2400 W | 800 W |
| Recharge time (faster wins) | 1h 30m | 1h 48m |
Runtime head-to-head
| Appliance | Anker SOLIX F3800 | EcoFlow DELTA Max 2000 |
|---|---|---|
| Refrigerator | 54.4 hrs | 28.6 hrs |
| Mini fridge | 103.6 hrs | 54.4 hrs |
| Chest freezer | 40.8 hrs | 21.4 hrs |
| CPAP machine | 81.6 hrs | 42.8 hrs |
| Sump pump | 4.1 hrs | 2.1 hrs |