Verdict: The Champion 3500 W Dual Fuel Generator provides longer runtime (12 hrs at 50 % load per Consumer Reports) and lower operating cost, but it is heavier (115 lb) and noisier (68 dB per CNET). The EcoFlow Delta Pro 2 delivers 3.6 kWh of clean energy, can recharge up to 1.6 kW of solar (per EcoFlow) and runs silently, though its high purchase price and limited high‑load runtime are drawbacks. For home backup where fuel is available, Champion wins on cost; for silent, emission‑free off‑grid use, EcoFlow leads.
Winner: EcoFlow Delta Pro 2
Champion 3500 Watt Dual Fuel Generator: 7/10
EcoFlow Delta Pro 2: 8/10
| Champion 3500 Watt Dual Fuel Generator | EcoFlow Delta Pro 2 | |
|---|---|---|
| Rated Power | 3500 W | — |
| Fuel Type | Gasoline/Propane | — |
| Runtime @50% Load | 12 hrs (per Consumer Reports) | — |
| Noise Level | 68 dB(A) (per CNET) | — |
| Battery Capacity | — | 3,600 Wh |
| AC Output | — | 3600 W (surge 7200 W) |
Our pick: EcoFlow Delta Pro 2.
View full comparison on GoodPickr
Affiliate disclosure: GoodPickr may earn a commission from qualifying purchases made through partner links on this page. Verdicts are editorially independent and never influenced by affiliate relationships.
GoodPickr · Data-backed product comparisons · Built by Golden Consulting Partners