EcoFlow DELTA 3 Ultra Plus vs Anker 757 PowerHouse
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
Anker 757 PowerHouse costs $1000 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Ultra Plus holds 150% more energy (3072Wh vs 1229Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra Plus has 4800W more surge headroom (7200W vs 2400W) — that decides whether a fridge, pump or AC compressor will actually start.
- Anker 757 PowerHouse is 41.6 lb lighter (43.9 lb vs 85.5 lb).
- EcoFlow DELTA 3 Ultra Plus is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
EcoFlow DELTA 3 Ultra Plus
The Ultra's solar problem solved: same everything, but 1600W of PV input instead of 800W. That doubles your off-grid refill speed for $200.
Best for: Off-grid cabins and van builds that actually recharge from panels.
Where it falls short:
- $1999 approaches DELTA Pro 3 pricing
- 85.5 lb
Anker 757 PowerHouse
Anker's older flagship, now a discount play. Solid and durable, but heavy for its capacity and outclassed on charge speed by the newer C-series.
Best for: Buyers who find it discounted below the newer Anker C1000.
Where it falls short:
- 43.9 lb for 1.2kWh is heavy
- 300W solar input is low
- Outclassed by the newer C1000
| Spec | EcoFlow DELTA 3 Ultra Plus | Anker 757 PowerHouse |
|---|---|---|
| Price | $1999 | $999 |
| Capacity | 3072 Wh | 1229 Wh |
| Continuous output | 3600 W | 1500 W |
| Surge output | 7200 W | 2400 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,000 |
| Weight (lighter wins) | 85.5 lb | 43.9 lb |
| Max solar | 1600 W | 300 W |
| Recharge time (faster wins) | 1h 30m | 1h 30m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra Plus | Anker 757 PowerHouse |
|---|---|---|
| Refrigerator | 43.5 hrs | 17.4 hrs |
| Mini fridge | 82.9 hrs | 33.2 hrs |
| Chest freezer | 32.6 hrs | 13.1 hrs |
| CPAP machine | 65.3 hrs | 26.1 hrs |
| Sump pump | 3.3 hrs | ❌ |