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ERAYAK 4500W Dual-Fuel Portable Inverter Generator

- 3500 W rated gas, 3150 W propane
- 54 lb, 19.9 x 16.9 x 20.3 in
- 58 dBA at 23 ft, quarter load
Our take
A 58 dBA reading at 23 feet at quarter load is quoted, a figure measured at light draw rather than full power, which is how most makers publish it.
Why it made the shortlist
Top numbers on this shortlist for both fuels belong to the ERAYAK 4500W. Gasoline output is stated at 4500 peak and 3500 rated watts, and propane at 4050 peak and 3150 rated watts, so even on the cleaner-storing fuel it still has headroom for a 30 amp trailer. A pure sine wave output with total harmonic distortion listed between 0.2 and 1.2 percent protects laptops and CPAP machines.
Where it separates itself from the WEN 3600W is the automatic fuel changeover, which keeps the generator running when one fuel supply ends instead of shutting the camp down at midnight. The weight sits at 54 pounds inside a footprint of roughly 20 by 17 by 20 inches, which is compact for 3500 running watts and easy to slide into a truck bed or an RV bay.
A built-in CO sensor and parallel readiness round out the package. Buyers who want one unit to handle a 30 amp RV, a tailgate and home backup should start here.
What works
- Highest propane output on this list
- Switches fuels automatically mid-run
- Pure sine wave, low distortion
- Built-in CO sensor and parallel ready






