Anker SOLIX C1000 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 $300 less. Whether that gap is worth closing depends on what you need to run.
- Anker SOLIX C1000 holds 3% more energy (1056Wh vs 1024Wh), so it runs the same load proportionally longer.
- Anker SOLIX C1000 has 900W more surge headroom (2400W vs 1500W) — that decides whether a fridge, pump or AC compressor will actually start.
- Anker SOLIX C1000 is 1.5 lb lighter (28.44 lb vs 29.9 lb).
Neither of these will start a sump pump or well pump — both surge below the ~3,400W those motors need. If home backup with pumps is your use case, look at higher-surge models instead of either of these.
The default recommendation for most people. It clears the 1kWh bar, recharges in under an hour, and undercuts almost everything with comparable specs.
Best for: First-time buyers who want one unit for camping and short outages without overpaying.
Where it falls short:
- 2400W surge won't start a sump pump or well pump
- Only 1056Wh — a fridge-plus-devices outage tops out around a day
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 | Anker SOLIX C1000 | Anker 555 PowerHouse |
|---|---|---|
| Price | $999 | $699 |
| Capacity | 1056 Wh | 1024 Wh |
| Continuous output | 1800 W | 1000 W |
| Surge output | 2400 W | 1500 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 28.44 lb | 29.9 lb |
| Max solar | 600 W | 200 W |
| Recharge time (faster wins) | 58 min | 2h 18m |
Runtime head-to-head
| Appliance | Anker SOLIX C1000 | Anker 555 PowerHouse |
|---|---|---|
| Refrigerator | 15.0 hrs | 14.5 hrs |
| Mini fridge | 28.5 hrs | 27.6 hrs |
| Chest freezer | 11.2 hrs | 10.9 hrs |
| CPAP machine | 22.4 hrs | 21.8 hrs |
| Sump pump | ❌ | ❌ |