EcoFlow DELTA Pro vs Anker 555 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 555 PowerHouse costs $2500 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA Pro holds 252% more energy (3600Wh vs 1024Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA Pro has 5700W more surge headroom (7200W vs 1500W) — that decides whether a fridge, pump or AC compressor will actually start.
- Anker 555 PowerHouse is 69.1 lb lighter (29.9 lb vs 99 lb).
- EcoFlow DELTA Pro is rated for 3,500 cycles vs 3,000 — meaningful if you cycle it daily.
EcoFlow DELTA Pro
The previous-generation flagship, now mostly worth buying on discount. The Pro 3 beats it on nearly every axis.
Best for: Bargain hunters who find it steeply discounted against the Pro 3.
Where it falls short:
- 99 lb and 165-minute recharge — both beaten by the Pro 3
- Aging platform; expect it to be phased out
Anker 555 PowerHouse
A 1kWh unit whose 1,000W output and slow charging show its age — the newer, cheaper Anker C1000 beats it on nearly every axis.
Best for: Only worth it steeply discounted against the C1000.
Where it falls short:
- 1,500W surge is low
- 200W solar input and a slow 138-minute recharge
| Spec | EcoFlow DELTA Pro | Anker 555 PowerHouse |
|---|---|---|
| Price | $3199 | $699 |
| Capacity | 3600 Wh | 1024 Wh |
| Continuous output | 3600 W | 1000 W |
| Surge output | 7200 W | 1500 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,500 | 3,000 |
| Weight (lighter wins) | 99 lb | 29.9 lb |
| Max solar | 1600 W | 200 W |
| Recharge time (faster wins) | 2h 45m | 2h 18m |
Runtime head-to-head
| Appliance | EcoFlow DELTA Pro | Anker 555 PowerHouse |
|---|---|---|
| Refrigerator | 51.0 hrs | 14.5 hrs |
| Mini fridge | 97.1 hrs | 27.6 hrs |
| Chest freezer | 38.3 hrs | 10.9 hrs |
| CPAP machine | 76.5 hrs | 21.8 hrs |
| Sump pump | 3.8 hrs | ❌ |