EcoFlow DELTA 2 vs. Anker SOLIX C1000

A source-based comparison of two roughly 1 kWh, 1,800 W US portable power stations.

Published September 22, 2026 · Updated October 1, 2026

Specifications at a glance

Runtime with the same load

These calculated illustrations use a full starting charge, 10% stopping reserve, 100% assumed capacity factor, 85% AC efficiency, and 5 W inverter idle draw. They show the effect of nominal capacity under identical assumptions, not measured product efficiency.

Startup duration and connection requirements are separate checks. None of these estimates establishes motor-start compatibility or guaranteed operating time.

Which differences matter for your plan?

These US variants have similar nominal capacity and the same documented continuous AC rating. Under identical assumptions, the C1000’s slightly larger capacity produces a slightly longer runtime estimate. That arithmetic does not establish a meaningful real-world efficiency advantage; operating losses and your load profile can change the result.

The C1000 has the higher documented maximum solar watt input, while the DELTA 2 is lighter in the cited specifications. A higher solar limit helps only when the connected array and conditions can supply useful additional power within the station’s voltage and current limits. Compare the panel arrangement you intend to use before valuing the headline watt limit.

Continuous output does not settle startup

The DELTA 2 manual documents a surge magnitude without a supported duration. The cited C1000 support article describes SurgePad as a separate mode; it is not treated here as a conventional surge rating. Neither record resolves a motor-start requirement merely because its continuous output meets your running load.

For a refrigerator or other cycling appliance, obtain the appliance’s startup requirement and confirm station behavior separately. Also check outlet timeout settings when the appliance may draw very little between cycles.

A practical decision sequence

First compare your required nominal capacity with each model, using the same reserve and loss assumptions. Then check simultaneous running power, startup evidence, and every required connection. If both remain suitable, compare carrying weight, your solar arrangement, included cables, and current warranty terms directly with the manufacturer. Prices and availability are not tracked here.

Need a different pairing? Use the comparison builder for any two or three published catalog models.

Evidence used

The facts above are specification-based. The source access date records when the evidence was checked; it is not a claim that the product was physically tested on that date.

• Anker: Introduction to Anker SOLIX C1000 — accessed 2026-09-22
• EcoFlow: DELTA 2 User Manual — downloadable specifications (US/CA) — accessed 2026-10-01

Published by Portable Power Calculator. This is specification-based planning information, not a hands-on product test or electrical safety assurance.