EcoFlow DELTA 3 Ultra 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
Ampace Andes 1500 costs $800 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Ultra holds 110% more energy (3072Wh vs 1462Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra has 3600W more surge headroom (7200W vs 3600W) — that decides whether a fridge, pump or AC compressor will actually start.
- Ampace Andes 1500 is 47.0 lb lighter (36.8 lb vs 83.8 lb).
- EcoFlow DELTA 3 Ultra is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
EcoFlow DELTA 3 Ultra
3kWh with 7200W surge at $1799 — this is whole-home territory at a mid-range price. The catch is the 800W solar input.
Best for: Grid-tied home backup where you recharge from the wall, not the sun.
Where it falls short:
- 800W solar input is low for 3kWh — slow off-grid refills
- 83.8 lb
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 DELTA 3 Ultra | Ampace Andes 1500 |
|---|---|---|
| Price | $1799 | $999 |
| Capacity | 3072 Wh | 1462 Wh |
| Continuous output | 3600 W | 2000 W |
| Surge output | 7200 W | 3600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,000 |
| Weight (lighter wins) | 83.8 lb | 36.8 lb |
| Max solar | 800 W | 1000 W |
| Recharge time (faster wins) | 1h 30m | 55 min |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra | Ampace Andes 1500 |
|---|---|---|
| Refrigerator | 43.5 hrs | 20.7 hrs |
| Mini fridge | 82.9 hrs | 39.5 hrs |
| Chest freezer | 32.6 hrs | 15.5 hrs |
| CPAP machine | 65.3 hrs | 31.1 hrs |
| Sump pump | 3.3 hrs | 1.6 hrs |