Last updated: March 2026 • Tested side-by-side by the Sparkling Picks team
Spec-by-Spec Comparison
| Spec | Anker Solix C1000 | EcoFlow Delta 2 |
|---|---|---|
| Price | $699 | $799 |
| Capacity | 1,056Wh | 1,024Wh |
| 0-80% Charge Time | 58 minutes | 80 minutes |
| AC Output | 1,600W (surge 2,400W) | 1,800W (surge 2,700W) |
| Weight | 12.9 kg (28.4 lbs) | 12.0 kg (27 lbs) |
| USB-C Output | 140W (2 ports) | 100W (2 ports) |
| AC Outlets | 6 | 6 |
| Expansion | Up to 2,112Wh (+1 battery) | Up to 3,072Wh (+2 batteries) |
| Warranty | 5 years | 3 years (+2 via registration) |
| App Control | Yes (Anker app) | Yes (EcoFlow app) |
| UPS Mode | Yes (30ms switchover) | Yes (30ms switchover) |
The Bottom Line
🏆 Winner: Anker Solix C1000
The Anker Solix C1000 delivers better value: it's $100 cheaper, charges faster (58 min vs 80 min to 80%), has a longer warranty (5 years vs 3), and offers higher USB-C output (140W vs 100W). The EcoFlow Delta 2 has slightly higher AC output (1,800W vs 1,600W), but for most users, the Anker wins on the metrics that matter.
When to Choose Each
📱 Charging Devices & Laptops
The Anker's 140W USB-C ports charge MacBook Pros and iPads faster than EcoFlow's 100W ports.
Pick: Anker Solix C1000⚡ Running High-Wattage Appliances
The Delta 2's 1,800W output handles larger appliances like space heaters or microwaves more comfortably.
Pick: EcoFlow Delta 2🏕️ Camping & Outdoor Use
Both work well. The Anker charges faster from solar panels (up to 600W input), which matters off-grid.
Pick: Anker Solix C1000🔋 Maximum Expandability
If you might need 3,000Wh+, the Delta 2 supports two expansion batteries vs Anker's one.
Pick: EcoFlow Delta 2Charging Speed: Anker Wins
The Anker Solix C1000 uses 1,200W AC charging (upgradable to 1,600W with HyperFlash), reaching 80% in under an hour. The EcoFlow Delta 2 charges at 1,200W but takes 80 minutes to hit 80%.
For solar charging, both accept up to 500W input, though the Anker's MPPT controller is slightly more efficient in our testing.
Build Quality & Warranty
Both units feel solid. The Anker has a slightly more premium finish with a soft-touch coating and integrated LED light. The EcoFlow has a rubberized handle that's comfortable but picks up dust.
The real difference: Anker offers a 5-year warranty out of the box. EcoFlow gives you 3 years, extendable to 5 if you register — but many buyers forget.
Final Verdict
For most buyers, the Anker Solix C1000 is the better choice. It's $100 less, charges faster, has better USB-C specs, and comes with a longer warranty. The EcoFlow Delta 2 only makes sense if you need the extra AC output headroom or plan to expand to 3,000Wh+ with multiple batteries.