Champion 4500W Dual Fuel Inverter
#7 in Mid-sizeFull review
A quiet dual-fuel inverter for 30 A RVs and outage backup of a fridge, freezer and a few circuits. Propane lets you store it ready to run.
Amazon $988.62$988.62
The Champion 4500W Dual Fuel Inverter is the better inverter generator overall, rated 3.7 to 3.6. The Champion 4500W Dual Fuel Inverter leads on fuel options and starting. The Ryobi RYi4022X wins on run time. The Ryobi RYi4022X costs $99.62 less ($889 vs $988.62).
Ryobi RYi4022X
#8 in Mid-sizeFull review
A simple open-frame inverter for RVs and outage backup with certified low-CO safety. Enclosed rivals are quieter for similar money.
Ryobi $889$889
Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Champion 4500W Dual Fuel Inverter for fuel options (gasoline or propane vs gasoline only) and starting (push-button electric start vs pull start only).
- Choose the Ryobi RYi4022X for run time (15.8 hours on a tank at 25% load (scaled from 50%) vs 14 hours on a tank at 25% load).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every mid-size inverter generator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Champion 4500W Dual Fuel Inverter | Ryobi RYi4022X |
|---|---|---|
| Overall rating | 3.7/5 | 3.6/5 |
| Value 30% | 67 $0.28 per running watt | 72 $0.26 per running watt |
| Quiet 20% | 31 61 dBA at light load, maker rating | 50 noise level not published (neutral score used) |
| Run time 15% | 67 14 hours on a tank at 25% load | 82 15.8 hours on a tank at 25% load (scaled from 50%) |
| Fuel options 10% | 70 gasoline or propane | 0 gasoline only |
| CO safety 10% | 100 shuts off when carbon monoxide builds up | 100 shuts off when carbon monoxide builds up |
| Warranty 10% | 50 3-year warranty | 50 3-year warranty |
| Starting 5% | 80 push-button electric start | 0 pull start only |
Specifications
| Champion 4500W Dual Fuel Inverter | Ryobi RYi4022X | |
|---|---|---|
| Output | ||
| Gasoline | 3,500 W running, 4,500 W starting | 3,400 W running, 4,000 W starting |
| Propane | 3,150 W running, 4,500 W starting | - |
| Outlets | 2 × 120 V, TT-30 (RV) | 4 × 120 V, TT-30 (RV) |
| Parallel capable | Yes | - |
| Total harmonic distortion | under 3% | - |
| Price per watt | $0.28 | $0.26 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline |
| Tank | 2.2 gal | 3.2 gal |
| Run time (gasoline) | 14 hr at 25% load | 12 hr at 50% load |
| Run time (propane, 20 lb tank) | 21 hr | - |
| Engine | 212 cc | 212 cc |
| Noise and safety | ||
| Rated noise (light load) | 61 dBA | - |
| CO shutoff | Yes | Yes |
| Build | ||
| Starting | Electric and recoil | Recoil (pull) |
| App | No | - |
| Wheels | Yes | Yes |
| Dimensions | 23.2 x 17.7 x 20.1 in | - |
| Weight | 99.2 lb | 85 lb |
| Warranty | 3 years | 3 years |