Anker SOLIX F3800 vs EcoFlow DELTA 2 Max
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 2 Max costs $2400 less. Whether that gap is worth closing depends on what you need to run.
- Anker SOLIX F3800 holds 88% more energy (3840Wh vs 2048Wh), so it runs the same load proportionally longer.
- Anker SOLIX F3800 has 4200W more surge headroom (9000W vs 4800W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 2 Max is 82.3 lb lighter (50 lb vs 132.3 lb).
- Anker SOLIX F3800 is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
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 surge sleeper. At 4800W it starts loads that stations twice its price can't — and most spec sheets bury that number behind the X-Boost figure.
Best for: Home backup where something with a compressor — fridge, freezer, window AC — has to start reliably.
Where it falls short:
- 50 lb is heavy for its capacity
- Marketing leads with the 3400W X-Boost number, which understates it
| Spec | Anker SOLIX F3800 | EcoFlow DELTA 2 Max |
|---|---|---|
| Price | $3999 | $1599 |
| Capacity | 3840 Wh | 2048 Wh |
| Continuous output | 6000 W | 2400 W |
| Surge output | 9000 W | 4800 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,000 |
| Weight (lighter wins) | 132.3 lb | 50 lb |
| Max solar | 2400 W | 1000 W |
| Recharge time (faster wins) | 1h 30m | 1h 30m |
Runtime head-to-head
| Appliance | Anker SOLIX F3800 | EcoFlow DELTA 2 Max |
|---|---|---|
| Refrigerator | 54.4 hrs | 29.0 hrs |
| Mini fridge | 103.6 hrs | 55.3 hrs |
| Chest freezer | 40.8 hrs | 21.8 hrs |
| CPAP machine | 81.6 hrs | 43.5 hrs |
| Sump pump | 4.1 hrs | 2.2 hrs |