Briggs & Stratton Q6500 QuietPower vs WEN 56380i Inverter
The Briggs & Stratton Q6500 QuietPower is the more powerful unit: 5,000 running watts against 3,400 — about 32% more capacity for the Briggs & Stratton Q6500 QuietPower. The WEN 56380i Inverter is the quieter of the two (57 dBA vs 66 dBA — though manufacturers measure noise at different loads and distances).
| Briggs & Stratton Q6500 QuietPower | WEN 56380i Inverter | |
|---|---|---|
| Type | inverter | inverter |
| Fuel | gasoline | gasoline |
| Running watts (gas / LP for standby) | 5000 W | 3400 W |
| Starting watts (gas) | 6500 W | 3800 W |
| Noise level | 66 dBA | 57 dBA |
| Runtime at 50% load (gas) | — | 8.5 h |
| Runtime at 25% load (gas) | 14 h | — |
| Fuel tank | — | 2.2 gal |
| Output voltage | — | 120V |
| Outlets | — | 2x 5-20R, TT-30R, 12V DC, 2x USB |
| Start type | recoil | electric |
| CO safety shutoff | Yes | — |
| Parallel capable | — | Yes |
| Engine displacement | 306 cc | 212 cc |
| Weight | 139 lb | 99.2 lb |
| Warranty | 2 yr | 2 yr |
Frequently asked questions
Which is more powerful, the Briggs & Stratton Q6500 QuietPower or the WEN 56380i Inverter?
The Briggs & Stratton Q6500 QuietPower, at 5,000 running watts on its best fuel versus 3,400 W. Remember that dual-fuel and natural-gas ratings are lower than gasoline ratings — the comparison table shows the published per-fuel figures.
Where do these specifications come from?
Every record on BackupAtlas is hand-curated from manufacturer documentation and spec sheets, and each generator page links to its source document.