Quick answer
EcoFlow (Delta 2) and Anker SOLIX (C1000) are the two most feature-packed 1kWh-class power stations on the market, and they’re priced almost identically at around $699. The EcoFlow Delta 2 wins on ceiling: it expands to 3,040Wh with an add-on battery (versus the SOLIX C1000’s 2,112Wh) and its X-Boost mode pushes 2,700W of surge output against Anker’s 2,400W. The Anker SOLIX C1000 wins on charging convenience and polish — Anker publishes its roughly 58-minute recharge figure as a true 0-100% charge, while EcoFlow’s faster-looking 50-minute number only covers the first 80%. Both brands now back their units with a 5-year warranty, so long-term coverage is a wash.
EcoFlow and Anker SOLIX sit at the top of the mainstream power-station market, both leaning on the same LiFePO4 chemistry and near-identical price tags. The difference comes down to whether you value maximum expansion headroom or a faster, simpler path to a full battery. Here’s the head-to-head, using their popular 1kWh units: the EcoFlow Delta 2 against the Anker SOLIX C1000.
Head to head
| Spec | EcoFlow Delta 2 | Anker SOLIX C1000 |
|---|---|---|
| Capacity | 1,024Wh LiFePO4 | 1,056Wh LiFePO4 |
| AC output | 1,800W (2,700W X-Boost) | 1,800W (2,400W surge) |
| Wall recharge | ~50 min to 80% | ~58 min to 100% |
| Max solar input | ~500W | Not published |
| Expandable | Yes, to 3,040Wh | Yes, to 2,112Wh |
| Warranty | 5 years | 5 years |
| Price | ~$699 | ~$699 |
Where EcoFlow wins
EcoFlow’s advantage is headroom. The Delta 2 expands to 3,040Wh with an add-on battery — nearly 50% more total capacity than the SOLIX C1000 tops out at — which matters if there’s any chance you’ll grow into home backup later instead of buying a second unit. Its X-Boost mode also pushes 2,700W of surge output, 300W ahead of Anker’s rating, giving it more margin for resistive loads like space heaters or hair dryers that a smaller inverter would reject.
EcoFlow Delta 2
- Expands to 3,040Wh with an add-on battery — the bigger long-term ceiling.
- X-Boost mode delivers 2,700W of surge output, ahead of the C1000's 2,400W.
- ~500W max solar input for off-grid recharging.
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Where Anker SOLIX wins
Anker’s advantage is a faster path to a genuinely full battery and a more polished experience getting there. The SOLIX C1000’s roughly 58-minute recharge figure covers the entire 0-100% charge, while the Delta 2’s faster-sounding 50-minute number only gets you to 80% before the last stretch slows down — so the real gap between the two is smaller than the headline numbers suggest, and can even favor Anker depending on how you use the unit. Anker’s companion app is also consistently rated as cleaner and more reliable than EcoFlow’s across the brand’s lineup.
Anker SOLIX C1000
- ~58-minute recharge covers a genuine 0-100% charge, not just 80%.
- Consistently rated app and interface across Anker's SOLIX lineup.
- Slightly more base capacity out of the box (1,056Wh vs. 1,024Wh).
The verdict
Buy EcoFlow (Delta 2) if there’s any chance you’ll want more capacity down the line — its 3,040Wh expansion ceiling and stronger X-Boost surge rating make it the better long-term bet, and it’s our overall best portable power station pick for a reason. Buy Anker SOLIX (C1000) if you want the simplest path to a genuinely full battery and the most polished app experience, with slightly more capacity out of the box. Both use long-life LiFePO4 cells and both now carry 5-year warranties, so you’re choosing between expansion headroom and everyday convenience. Cross-shopping the value brands too? See how Anker SOLIX stacks up against Bluetti in Anker SOLIX vs Bluetti, or how EcoFlow compares to Bluetti directly in EcoFlow vs Bluetti.