Head to Head: Anker SOLIX C1000 vs EcoFlow DELTA 3
Two expandable 1,800W stations: which expansion path and charging setup fits you?
Published · Updated
Both are 1,800W LiFePO4 and expandable. The C1000 has slightly more capacity (1,056 vs 1,024Wh) and more solar input (600W vs 500W). The DELTA 3 has more surge (3,600W vs 2,400W), a faster published switchover and expands much further (5kWh vs 2,112Wh).
- Solar input: C1000.
- Surge, switchover and expansion ceiling: DELTA 3.
- Weight: within about 1 lb.
Specs side by side
Manufacturer figures, copied from the sources below; the usable row is our estimate.
| Spec | Anker SOLIX C1000 | EcoFlow DELTA 3 |
|---|---|---|
| Rated capacity | 1,056Wh | 1,024Wh |
| Estimated usable (AC) | ≈777Wh (estimate) | ≈754Wh (estimate) |
| Battery | LiFePO4, 3,000 cycles to 80%+ | LiFePO4, 4,000 cycles to 80%+ |
| AC output | 1,800W (surge 2,400W, SurgePad up to 2,400W) | 1,800W (surge 3,600W; X-Boost 2,200W) |
| Wall charging | Up to 1,300W, 0–100% in 58 min (HyperFlash) | Up to 1,500W, 0–100% in 56 min |
| Solar input | 600W max, 11–60V | 500W max, 11–60V |
| Weight | 28.4 lb (12.9 kg) | About 27.6 lb (12.5 kg) |
| Backup switchover | Under 20 ms (UPS mode) | <10 ms switchover |
| Expansion | Expandable to 2,112Wh with an expansion battery | Expandable up to 5kWh with EcoFlow extra batteries |
Where they differ
- Expansion ceiling: 2,112Wh vs up to 5kWh.
- Surge: 2,400W vs 3,600W.
- Solar: 600W vs 500W.
- Switchover: <20 ms vs <10 ms.
Who should buy which
Buy the C1000 if one expansion step is plenty and you want more solar input. Buy the DELTA 3 if you plan to grow toward multi-day backup or run motor loads.
FAQ
Where can I see the full specs?
See the Anker SOLIX C1000 Spec Check and the EcoFlow DELTA 3 Spec Check.
Where do I go next?
Try the power planner to put numbers to your own situation, or see the product picks on the deals page.
Terms used here
- LiFePO4 (LFP)
- Lithium iron phosphate battery chemistry.
Sources
This guide is informational and based on published specifications and general references, not hands-on testing. Check the manufacturer's current specs before you buy.