Same 1024 Wh, two different bets. Anker went lighter, sealed and higher-watt. EcoFlow kept the expansion port and doubled solar input.
Anker SOLIX C1000 Gen 2
- Capacity1024 Wh
- AC output2000 W
- Weight24.9 lb
- Cycles4,000
EcoFlow DELTA 3 Plus
- Capacity1024 Wh
- AC output1800 W
- Weight27.6 lb
- Cycles4000
Main differences
Full manufacturer wording
| Spec | Anker SOLIX C1000 Gen 2 | EcoFlow DELTA 3 Plus |
|---|---|---|
| Capacity | 1,024 Wh | 1024 Wh |
| AC output | 2,000 W AC continuous, 3,000 W peak (Anker SOLIX US) | 1800 W AC (surge 3600 W); X-Boost up to 2200 W (EcoFlow US) |
| Weight | 24.9 lb (Anker SOLIX US) | Approx. 12.5 kg (27.6 lb) |
| Chemistry | LFP (LiFePO4) | LFP (LiFePO4) |
| Cycle life (mfr.) | 4,000 cycles to 80%+ capacity (Anker SOLIX US) | 4000 cycles to 80%+ capacity |
| Max solar input | 600 W max (XT60i; 11–28 V 8.2 A / 29–60 V 14.5 A) | 1000 W max (2× 500 W, 11–60 V) |
| Expandable | No — Anker states C1000 Gen 2 is not expandable | Yes — up to 5 kWh with listed DELTA extra batteries (XT150 cable) |
| Charge temp. | 32–104°F (0–40°C) | See manual (not tabulated on the US PDP we fetched) |
| Discharge temp. | −4–104°F (−20–40°C) | See manual (not tabulated on the US PDP we fetched) |
| Warranty (mfr. copy) | See current Anker SOLIX terms (not restated in the PDP spec block) | 5 years (EcoFlow US) |
Expandable vs sealed
Anker says plainly that C1000 Gen 2 has no expansion feature and points buyers who need it to the original C1000. EcoFlow sells DELTA 3 Plus into the DELTA extra-battery family (DELTA 3, DELTA 2, DELTA 2 Max and DELTA Pro 3 extra batteries via an XT150 cable), up to 5 kWh. If a second night of runtime might matter later, that decides it.
Inverter
C1000 Gen 2: 2000 W continuous, 3000 W peak. DELTA 3 Plus: 1800 W continuous, 3600 W surge, and X-Boost up to 2200 W for resistive loads like kettles. Anker wins true continuous watts; EcoFlow lists the higher surge.
Recharging
Anker claims 49 min to full at 1600 W with UltraFast enabled in the app (1200 W standard, and it slows below 68°F cell temperature). EcoFlow claims 56 min at 1500 W. Solar is where they split: 600 W on the Anker versus 1000 W (2× 500 W) on the EcoFlow, which also lists an 800 W car-charging path.
Weight and size
C1000 Gen 2 lists 24.9 lb and 15.12 × 8.19 × 9.61 in. DELTA 3 Plus lists 27.6 lb and about 16 × 8.0 × 11 in. Both claim a sub-10 ms UPS switchover, so either can sit behind a router or CPAP.
Anker SOLIX C1000 Gen 2 — official storeAmazon search
EcoFlow DELTA 3 Plus — official storeAmazon search
Sources
Anker SOLIX US C1000 Gen 2 PDP and spec block. EcoFlow US DELTA 3 Plus PDP spec block. Checked 28 October 2026.