EcoFlow RIVER 3 vs Ampace Andes 1500
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 $760 less. Whether that gap is worth closing depends on what you need to run.
- Ampace Andes 1500 holds 497% more energy (1462Wh vs 245Wh), so it runs the same load proportionally longer.
- Ampace Andes 1500 has 3000W more surge headroom (3600W vs 600W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 3 is 29.0 lb lighter (7.8 lb vs 36.8 lb).
EcoFlow RIVER 3
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
Ampace Andes 1500
Backed by an Amperex/CATL cell pedigree, the Andes 1500 stands out on charge speed — 0-80% in well under an hour — and a light 36.8 lb for 1.5kWh.
Best for: Buyers who prize fast charging and low weight at 1.5kWh.
Where it falls short:
- Newer brand with a thinner track record
- Not expandable
| Spec | EcoFlow RIVER 3 | Ampace Andes 1500 |
|---|---|---|
| Price | $239 | $999 |
| Capacity | 245 Wh | 1462 Wh |
| Continuous output | 300 W | 2000 W |
| Surge output | 600 W | 3600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 7.8 lb | 36.8 lb |
| Max solar | 110 W | 1000 W |
| Recharge time (faster wins) | 1h | 55 min |
Runtime head-to-head
| Appliance | EcoFlow RIVER 3 | Ampace Andes 1500 |
|---|---|---|
| Refrigerator | ❌ | 20.7 hrs |
| Mini fridge | 6.6 hrs | 39.5 hrs |
| Chest freezer | ❌ | 15.5 hrs |
| CPAP machine | 5.2 hrs | 31.1 hrs |
| Sump pump | ❌ | 1.6 hrs |