Home Power Facts Anker SOLIX C1000 vs EcoFlow DELTA 3 Classic
The Anker SOLIX C1000 delivers more usable capacity than the EcoFlow DELTA 3 Classic (about 897 Wh vs 819 Wh). A typical refrigerator runs about 13.5 h on the Anker SOLIX C1000 and 12.3 h on the EcoFlow DELTA 3 Classic.
Specs verified 2026-10-18. Every value below links to its source.
Where they differ
- Anker SOLIX C1000: more usable capacity (897 Wh vs 819 Wh, EcoFlow DELTA 3 Classic).
- EcoFlow DELTA 3 Classic: higher surge rating (3,600 W vs 2,400 W, Anker SOLIX C1000).
- EcoFlow DELTA 3 Classic: lighter (26.7 lb vs 28.44 lb, Anker SOLIX C1000).
- EcoFlow DELTA 3 Classic: lower list price (599 USD vs 599.99 USD, Anker SOLIX C1000).
- Anker SOLIX C1000: lower price per usable Wh ($0.67 vs $0.73, EcoFlow DELTA 3 Classic), the fairest value measure across sizes.
- EcoFlow DELTA 3 Classic: faster AC charging (1,400 W vs 1,300 W, Anker SOLIX C1000).
- Anker SOLIX C1000: more solar input (600 W vs 500 W, EcoFlow DELTA 3 Classic).
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Specs side by side
| Spec | Anker SOLIX C1000 | EcoFlow DELTA 3 Classic |
|---|---|---|
| Rated capacity | 1,056 Wh[source]Tech Specs 'Capacity: 1056Wh'. This is the original C1000 (A1761), not the C1000X (separate page, /products/a1761111) or the C1000 Gen 2 (1,024 Wh). The US page shows the unit as 'Sold Out' on 2026-10-18. | 1,024 Wh[source]1024Wh 51.2V 20Ah. Not the same product as the DELTA 3 / DELTA 3 Plus / DELTA 3 Max. |
| Usable capacity (measured) | 897 Wh[source]OutdoorGearLab (US unit, AC output) measured 897 Wh, about 85% of rated. ComputerBase (EU 230 V unit) measured 993 Wh at 500 W and 954 Wh at 2,000 W; the lower figure is used. | Not publishedno independent test found. thesolarlab.com reports about 83% inverter efficiency but does not publish a measured Wh figure. |
| AC continuous output | 1,800 W[source]'AC Continuous Output: 1800W Pure Sine Wave'. | 1,800 W[source]'120V~60Hz 1800W total'. |
| AC surge output | 2,400 W[source]'AC Surge Output: 2400W' (SurgePad, for heat-generating devices). | 3,600 W[source]'3600W surge output'. X-Boost (resistive loads up to 2600 W) is a separate feature. Some retailer listings give X-Boost as 2400 W; the official page says 2600 W. |
| 240 V output | No[source]Official spec data 'AC Output Voltage: 120V'; no 240 V output. | No[source]AC Output: '120V~60Hz 1800W total'; no 240V output listed. |
| Battery chemistry | LiFePO4[source]'LiFePO4 (Lithium Iron Phosphate)'. | LiFePO4[source]'LFP(LiFePO4)'. |
| Cycle life | 3,000 cycles to 80% capacity[source]'Battery Life Cycles: 3,000 (80% Capacity)'. | Not publishedOfficial page gives no cycle count, only an estimated ~10-year lifespan from internal simulation. Retailer cycle figures (3000 or 4000) conflict and were not used. |
| AC charging | 1,300 W[source]'AC Input Recharge: 1,300W Max'; full charge in 58 min (UltraFast). | 1,400 W[source]'AC Input (Charge Only) 100-120V~15A 50/60Hz 1400W Max'. |
| Max solar input | 600 W[source]'600W Max, 11-60V MPPT'. | 500 W[source] |
| Expandable | Yes[source]'Increase the capacity of C1000 with an extra 1,056Wh' via the BP1000 expansion battery (1 max). | Not publishedOfficial page does not state expandability. An independent review (thesolarlab.com) lists it as non-expandable. |
| UPS / EPS switchover | 20 ms[source]Tech Specs 'UPS Switch Time: <20ms'. | 10 ms[source] |
| Weight | 28.44 lb[source]'Net Weight: 28.44 lb / 12.9 kg'. | 26.7 lb[source]Official net weight '12.1kg+0.3kg', converted to lb (12.1 kg = 26.7 lb). |
| Warranty | 5 years[source]'Warranty: 5-Year Warranty'. | 5 years[source]3-year standard + 2-year extension only after EcoFlow app registration. |
| List price | $599.99[source]Seen 2026-10-18: unit 'Sold Out', so the page shows no price; the store's product data lists the standalone variant at $599.99 with no compare-at price. No sale price shown. | $599[source]Regular price $599; sale price $499 (pre-order) shown on 2026-10-18. |
| Usable capacity used for runtimes | 897 Wh | 819 Wh (est. 80%) |
Runtime on one charge
| Appliance | Anker SOLIX C1000 | EcoFlow DELTA 3 Classic |
|---|---|---|
| Refrigerator | 13.5 h | 12.3 h |
| Chest freezer | 36.5 h | 33.3 h |
| CPAP (no humidifier) | 19.9 h | 18.2 h |
| CPAP with heated humidifier | 10 h | 9.1 h |
| Sump pump (1/3 hp) | 1.4 h | 1.3 h |
| Sump pump (1/2 hp) | 1 h | 0.9 h |
| Gas furnace blower (1/2 hp) | 1.6 h | 1.5 h |
| Window AC (5,000 BTU) | 2.6 h | 2.4 h |
| Microwave | 1 h | 0.9 h |
| Coffee maker | 0.7 h | 0.7 h |
| Laptop charger | 15 h | 13.7 h |
| Phone charger | 44.9 h | 41 h |
| Wi-Fi router / modem | 2.5 days | 2.3 days |
| TV (LED, 32-55 inch) | 13.2 h | 12 h |
| LED light bulb (each) | 4.2 days | 3.8 days |
| Space heater | 0.6 h | 0.5 h |
| Oxygen concentrator (home, 5 L/min) | 2.6 h | 2.3 h |
| Starlink (Standard kit) | 10.2 h | 9.3 h |
| Desktop PC + monitor | 10 h | 9.1 h |
| Electric blanket (queen) | 3.5 h | 3.2 h |
| Box fan (20 inch) | 10.8 h | 9.9 h |
| Dehumidifier (35-50 pint) | 1.8 h | 1.7 h |
| Portable air conditioner (8,000-10,000 BTU) | 0.7 h | 0.7 h |
| Electric kettle | 0.6 h | 0.5 h |
| Portable induction cooktop (single burner) | 0.5 h | 0.5 h |
| Air fryer | 0.6 h | 0.5 h |
| Mini fridge (compact, ~3 cu ft) | 35.9 h | 32.8 h |
| Garage door opener | 1.2 h | 1.1 h |
Runtime = usable capacity ÷ average draw, the same formula for both models (no idle draw added to either), after checking continuous output and startup surge. Usable capacity is an independent test's measured figure, or 80% of rated where none exists. See the methodology.