EcoFlow DELTA 2 Max vs EcoFlow DELTA Pro 3
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 $2100 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA Pro 3 holds 100% more energy (4096Wh vs 2048Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA Pro 3 has 3200W more surge headroom (8000W vs 4800W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 2 Max is 63.0 lb lighter (50 lb vs 113 lb).
- EcoFlow DELTA Pro 3 is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
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
The most complete large unit here. 4096Wh, 4000W, 8000W surge and 2600W of solar — it does everything the F3800 does with less weight.
Best for: Whole-home backup buyers who want maximum solar recharge speed.
Where it falls short:
- $3,699 is a serious investment
- Overkill unless you're backing up a whole home
| Spec | EcoFlow DELTA 2 Max | EcoFlow DELTA Pro 3 |
|---|---|---|
| Price | $1599 | $3699 |
| Capacity | 2048 Wh | 4096 Wh |
| Continuous output | 2400 W | 4000 W |
| Surge output | 4800 W | 8000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 4,000 |
| Weight (lighter wins) | 50 lb | 113 lb |
| Max solar | 1000 W | 2600 W |
| Recharge time (faster wins) | 1h 30m | 1h 40m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 2 Max | EcoFlow DELTA Pro 3 |
|---|---|---|
| Refrigerator | 29.0 hrs | 58.0 hrs |
| Mini fridge | 55.3 hrs | 110.5 hrs |
| Chest freezer | 21.8 hrs | 43.5 hrs |
| CPAP machine | 43.5 hrs | 87.0 hrs |
| Sump pump | 2.2 hrs | 4.4 hrs |