Yamaha EF4500iSE
A gas inverter generator rated at 4,000 running and 4,500 starting watts, with a 4.5-gallon tank and up to 15.2 hours of runtime at 25% load. Yamaha rates it at 58 dB(A).
- Running watts
- 4,000 W
- Starting / surge watts
- 4,500 W
- Fuel
- gasoline
- Best for
- RV trips and home backup for a fridge, lights and electronics, with clean power.
- Not for
- Whole-home backup or 240V appliances. Carrying by hand: it weighs 209 lb.
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Specifications
| Running watts | 4,000 W |
|---|---|
| Starting / surge watts | 4,500 W |
| Fuel | gasoline |
| Inverter (clean power) | Yes |
| Runtime at 25% load | 15.2 h |
|---|---|
| Fuel tank | 4.5 gal |
| Noise | 58 dB(A) |
|---|---|
| Weight | 209 lb |
| Length | 30.7 in |
| Width | 24.3 in |
| Height | 27.2 in |
| Standard warranty | 3 years |
|---|
Checked 30 October 2026. Sources: yamahamotorsports.com.