Quick answer
EcoFlow (Delta 2), Anker SOLIX (C1000), and Bluetti (AC180) are the three most-compared 1kWh-class power stations on the market, and each wins on a different axis. EcoFlow has the biggest ceiling: the Delta 2 expands to 3,040Wh with an add-on battery and its X-Boost mode pushes 2,700W of surge output, per EcoFlow’s own spec sheet. Anker SOLIX is the fastest to a genuinely full battery — about 58 minutes for a true 0-100% recharge, per Anker’s published specs, versus EcoFlow’s faster-looking 50-minute figure that only covers the first 80%. Bluetti wins on raw value and total expansion headroom: the AC180 packs more base capacity (1,152Wh) than either rival and scales to 4,224Wh with add-on batteries, per Bluetti’s own specs page, though as of September 2026 it’s temporarily out of stock direct from Bluetti. All three now carry a 5-year warranty, so buy based on which single advantage — expansion ceiling, charging speed, or price-per-watt-hour — matters most for how you’ll actually use it.
Three brands, three different bets on what a 1kWh power station should prioritize. Rather than picking winners in isolation, here’s the full head-to-head using each brand’s flagship 1kWh-class unit: the EcoFlow Delta 2, the Anker SOLIX C1000, and the Bluetti AC180.
Head to head
| Spec | EcoFlow Delta 2 | Anker SOLIX C1000 | Bluetti AC180 |
|---|---|---|---|
| Capacity | 1,024Wh LiFePO4 | 1,056Wh LiFePO4 | 1,152Wh LiFePO4 |
| AC output | 1,800W (2,700W X-Boost) | 1,800W (2,400W surge) | 1,800W (2,700W lift) |
| Wall recharge to full | ~50 min to 80% | ~58 min to 100% | ~1.5 hr |
| Max solar input | ~500W | 600W max (11-60V MPPT) | ~500W |
| Expandable | Yes, to 3,040Wh | Yes, to 2,112Wh | Yes, to 4,224Wh (B80/B230/B300) |
| Cycle life | 3,000+ to 80% | ~3,000 to 80% | 3,500+ to 80% |
| Warranty | 5 years | 5 years | 5 years |
| Price | $349-429 street (down from $699 list) | $799 list, $399-479 street | $449-499 (temp. out of stock direct, see note below) |
Where EcoFlow wins
EcoFlow’s edge is headroom. The Delta 2 expands to 3,040Wh with an add-on battery — the biggest ceiling of the three — and its X-Boost mode pushes 2,700W of surge output, ahead of the SOLIX C1000’s 2,400W and tied with the AC180’s 2,700W lift. If there’s any chance you’ll grow into home backup later instead of buying a second unit, the Delta 2’s expansion path is the most proven of the three — EcoFlow’s modular battery system has been on the market longest. Street pricing has also dropped the furthest, now commonly $349-429 versus its original $699 list.
EcoFlow Delta 2
- Expands to 3,040Wh with an add-on battery — the biggest ceiling of the three.
- X-Boost mode delivers 2,700W of surge output.
- Street price has dropped furthest from list, now $349-429.
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Where Anker SOLIX wins
Anker’s edge is a faster path to a genuinely full battery and the most polished experience getting there. The SOLIX C1000’s roughly 58-minute recharge figure covers a true 0-100% charge, while the Delta 2’s faster-sounding 50-minute number only reaches 80% before the last stretch slows down, and the AC180 needs roughly 1.5 hours either way. Anker also accepts the highest-rated solar input on paper (600W max, 11-60V MPPT per Anker’s own spec sheet), and its companion app is consistently rated as cleaner and more reliable than either rival’s across review coverage.
Anker SOLIX C1000
- ~58-minute recharge covers a genuine 0-100% charge, the fastest of the three.
- 600W max solar input, the highest rated of the three.
- Consistently rated app and interface across the SOLIX lineup.
Where Bluetti wins
Bluetti’s edge is watt-hours per dollar and total expansion headroom. The AC180 starts with more base capacity than either rival (1,152Wh) at a lower typical price, and scales furthest of the three — to 4,224Wh with add-on B80/B230/B300 batteries, per Bluetti’s own specs page — versus the Delta 2’s 3,040Wh ceiling and the C1000’s 2,112Wh. It also carries the longest-rated cycle life (3,500+ to 80% capacity, versus roughly 3,000 for the other two). The tradeoff is recharge speed: at roughly 1.5 hours to full, it’s noticeably slower than either rival. One caveat as of September 2026: Bluetti’s own site lists the AC180 as temporarily out of stock direct, with restock previously expected late November — third-party retailers may still carry units, and the newer Elite 100 V2 (1,024Wh, 1,000W solar input, 4,000+ cycles) is a close in-stock alternative in the meantime, per our full Bluetti AC180 review.
Bluetti AC180 (temporarily out of stock — see Elite 100 V2)
- Most capacity-per-dollar of the three, when in stock.
- Scales furthest of the three, to 4,224Wh with add-on batteries.
- Longest-rated cycle life (3,500+ to 80%), but the slowest recharge.
The verdict
Buy EcoFlow (Delta 2) if you want the most proven expansion path into home backup and the biggest surge headroom for resistive loads. Buy Anker SOLIX (C1000) if charging speed and app polish matter most — it’s the only one of the three that reaches a genuine full charge in under an hour. Buy Bluetti (AC180) if price-per-watt-hour and long-term expansion ceiling are the priority, and you can either catch it in stock or accept the Elite 100 V2 as a close substitute. All three use long-life LiFePO4 cells and now carry 5-year warranties, so the decision really comes down to which single tradeoff — ceiling, speed, or value — fits how you’ll use it.
For the two-way breakdowns behind this comparison, see EcoFlow vs Anker SOLIX, Anker SOLIX vs Bluetti, and EcoFlow vs Bluetti. Want the full picture on any one brand first? Read our full EcoFlow lineup guide, full Anker SOLIX lineup guide, or full Bluetti lineup guide — or dig into the individual units in our EcoFlow Delta 2 review, Anker SOLIX C1000 review, and Bluetti AC180 review.