EcoFlow RIVER 3 vs EcoFlow DELTA mini
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 costs $360 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA mini holds 260% more energy (882Wh vs 245Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA mini has 1500W more surge headroom (2100W vs 600W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 3 is 15.8 lb lighter (7.8 lb vs 23.6 lb).
- EcoFlow RIVER 3 uses LiFePO4 while the other uses NMC — roughly double the usable cycle life.
- EcoFlow RIVER 3 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 mini. 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.
A glorified power bank with AC outlets — and that's fine if that's what you need. 245Wh runs devices, not appliances.
Best for: Weekend campers charging phones, cameras and a laptop.
Where it falls short:
- 300W output rules out anything with a heating element
- No expansion path
A compact NMC unit with a surprisingly strong 1,400W output for its size — but the 800-cycle battery means it won't age like the LiFePO4 field.
Best for: Buyers who want strong output in a light unit and won’t cycle it daily.
Where it falls short:
- NMC — ~800 cycles
- 2-year warranty, 300W solar input
| Spec | EcoFlow RIVER 3 | EcoFlow DELTA mini |
|---|---|---|
| Price | $239 | $599 |
| Capacity | 245 Wh | 882 Wh |
| Continuous output | 300 W | 1400 W |
| Surge output | 600 W | 2100 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 3,000 | 800 |
| Weight (lighter wins) | 7.8 lb | 23.6 lb |
| Max solar | 110 W | 300 W |
| Recharge time (faster wins) | 1h | 1h 36m |
Runtime head-to-head
| Appliance | EcoFlow RIVER 3 | EcoFlow DELTA mini |
|---|---|---|
| Refrigerator | ❌ | 12.5 hrs |
| Mini fridge | 6.6 hrs | 23.8 hrs |
| Chest freezer | ❌ | 9.4 hrs |
| CPAP machine | 5.2 hrs | 18.7 hrs |
| Sump pump | ❌ | ❌ |