EcoFlow RIVER 2 Pro 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 RIVER 2 Pro costs $500 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA Max 2000 holds 163% more energy (2016Wh vs 768Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA Max 2000 has 1800W more surge headroom (3400W vs 1600W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 2 Pro is 31.0 lb lighter (17 lb vs 48 lb).
- EcoFlow RIVER 2 Pro uses LiFePO4 while the other uses NMC — roughly double the usable cycle life.
- EcoFlow RIVER 2 Pro is rated for 3,000 cycles vs 800 — meaningful if you cycle it daily.
If you plan to cycle the battery daily, think twice about the EcoFlow DELTA Max 2000. Its NMC cells are rated for 800 cycles against the LiFePO4 rival's longer life — over years of regular use that's the more expensive unit, whatever the sticker says.
The one you actually carry. At 17 lb it is light enough for one hand, yet unlike the true pocket units it has the 800W of output needed to run small appliances rather than just charge devices.
Best for: Backpackers, photographers and festival-goers who care about weight above all.
Where it falls short:
- 800W output limits you to electronics and small loads
- 220W solar input means slow off-grid top-ups
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 | EcoFlow RIVER 2 Pro | EcoFlow DELTA Max 2000 |
|---|---|---|
| Price | $599 | $1099 |
| Capacity | 768 Wh | 2016 Wh |
| Continuous output | 800 W | 2400 W |
| Surge output | 1600 W | 3400 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 3,000 | 800 |
| Weight (lighter wins) | 17 lb | 48 lb |
| Max solar | 220 W | 800 W |
| Recharge time (faster wins) | 1h 10m | 1h 48m |
Runtime head-to-head
| Appliance | EcoFlow RIVER 2 Pro | EcoFlow DELTA Max 2000 |
|---|---|---|
| Refrigerator | 10.9 hrs | 28.6 hrs |
| Mini fridge | 20.7 hrs | 54.4 hrs |
| Chest freezer | 8.2 hrs | 21.4 hrs |
| CPAP machine | 16.3 hrs | 42.8 hrs |
| Sump pump | ❌ | 2.1 hrs |