EcoFlow RIVER 3 Plus vs EcoFlow DELTA 3 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 RIVER 3 Plus costs $770 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Max holds 616% more energy (2048Wh vs 286Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Max has 3600W more surge headroom (4800W vs 1200W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 3 Plus is 45.2 lb lighter (9.9 lb vs 55.1 lb).
- EcoFlow DELTA 3 Max is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
EcoFlow RIVER 3 Plus
Doubles the River 3's output for $90 more, and adds an expansion battery port. The better buy of the two unless weight is everything.
Best for: Campers who want one unit that covers devices plus the occasional small appliance.
Where it falls short:
- 286Wh alone is a single evening of real use
- 220W solar input is modest
EcoFlow DELTA 3 Max
The value leader in the 2kWh class. Same 4800W surge as the DELTA 2 Max at $500 less, with 1000 more cycles.
Best for: Home backup buyers who want compressor-starting surge without paying flagship prices.
Where it falls short:
- 55 lb is a two-hand lift
- Only marginally lighter than heavier rivals
| Spec | EcoFlow RIVER 3 Plus | EcoFlow DELTA 3 Max |
|---|---|---|
| Price | $329 | $1099 |
| Capacity | 286 Wh | 2048 Wh |
| Continuous output | 600 W | 2400 W |
| Surge output | 1200 W | 4800 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 4,000 |
| Weight (lighter wins) | 9.9 lb | 55.1 lb |
| Max solar | 220 W | 1000 W |
| Recharge time (faster wins) | 1h | 1h 22m |
Runtime head-to-head
| Appliance | EcoFlow RIVER 3 Plus | EcoFlow DELTA 3 Max |
|---|---|---|
| Refrigerator | 4.1 hrs | 29.0 hrs |
| Mini fridge | 7.7 hrs | 55.3 hrs |
| Chest freezer | 3.0 hrs | 21.8 hrs |
| CPAP machine | 6.1 hrs | 43.5 hrs |
| Sump pump | ❌ | 2.2 hrs |