EcoFlow DELTA 3 Plus 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 $50 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Plus has 2100W more surge headroom (3600W vs 1500W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 3 Plus is 1.2 lb lighter (28.7 lb vs 29.9 lb).
- EcoFlow DELTA 3 Plus is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
EcoFlow DELTA 3 Plus
The DELTA 3 with a $100 premium for smart-home integration and faster UPS switching. Same battery, same surge.
Best for: Home-office setups where a desktop or NAS can't tolerate a power blip.
Where it falls short:
- $100 more for features many buyers never use
- Same 1024Wh as the cheaper DELTA 3
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 3 Plus | Anker 555 PowerHouse |
|---|---|---|
| Price | $749 | $699 |
| Capacity | 1024 Wh | 1024 Wh |
| Continuous output | 1800 W | 1000 W |
| Surge output | 3600 W | 1500 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,000 |
| Weight (lighter wins) | 28.7 lb | 29.9 lb |
| Max solar | 500 W | 200 W |
| Recharge time (faster wins) | 56 min | 2h 18m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Plus | Anker 555 PowerHouse |
|---|---|---|
| Refrigerator | 14.5 hrs | 14.5 hrs |
| Mini fridge | 27.6 hrs | 27.6 hrs |
| Chest freezer | 10.9 hrs | 10.9 hrs |
| CPAP machine | 21.8 hrs | 21.8 hrs |
| Sump pump | 1.1 hrs | ❌ |