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| Specification | Yamaha EF4500iSE | Aceup Energy AI4000s |
|---|---|---|
| General | ||
| Product type | Generator | Not available |
| Fuel | Gasoline | Not available |
| Inverter | Yes | Yes |
| Parallel capable | No | Yes |
| RV ready | No | No |
| Running watts | Winner: Winner: 4000 W | 3200 W |
| Starting watts | Winner: Winner: 4500 W | 4000 W |
| Noise (lower limit) | 58 dB | Winner: Winner: 55 dB |
| Weight | Winner: Winner: 209 lbs | Not available |
| Run time @50% load | Not available | Winner: Winner: 8 h |
| Run time @25% load | 15.2 h | Not available |
| Fuel tank | 4.5 gal | 1.32 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 30.7 x 24.3 x 27.2 | Not available |
| Electrical | ||
| Voltage (AC) | 120 | 120V |
| Voltage (DC) | Not available | 12V |
| GFCI outlets | No | No |
| Covered outlets | No | No |
| Automatic Voltage Regulation | Yes | No |
| THD | 3 % | Not available |
| Engine | ||
| Engine | Yamaha MZ360 OHV 4-stroke | 4-stroke OHV engine |
| Alternator | Not available | Not available |
| Starting system | Electric | Not available |
| Warranty | ||
| Warranty | 3 years | 2 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 4000 W | 3200 W |
| Starting watts | 4500 W | 4000 W |
| Running amps (120V) | Not available | Not available |
| Running amps (240V) | Not available | Not available |
| Peak amps (120V) | Not available | Not available |
| Peak amps (240V) | Not available | Not available |
| Run time @50% load | Not available | Not available |
| Run time @25% load | 15.2 h | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA | EPA compliant |
| Security | Not available | Not available |
| Spark arrestor | Yes | No |
| Neutral | Floating | Not available |
| UPC | 765053833196 | Not available |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 4000 | 3200 |
| Starting Watts (Gasoline) | 4500 | 4000 |
| Runtime @ 25% Load (Gasoline) | 15.2 | Not available |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R)1x 120V 30A (L5-30R) | One 20A outlet, one L5-30R Twist-Lock receptacle |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | 4-stroke OHV engine |
| Engine Displacement | 357 | 149 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 15.2 | Not available |
| Controls & display | ||
| Display Type | Not available | Intelligent gauge |
| Idle Control System | Not available | Economic mode to save fuel |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection, CO monitoring | Not available |
| Low Oil Protection | Yes | No |
| Carbon Monoxide Monitoring | Yes | No |
| Included equipment | ||
| Starting Components | Not available | Recoil start |
| Included Accessories | Battery | Oil funnel * 2; A bottle of Oil; Spark plug wrench |
| Warranty & identification | ||
| Residential Warranty | Not available | 2 |
| Commercial Warranty | Not available | 2 |
| Part Number | EF45ISEZ | AI4000s |
| Additional specs | ||
| Summary | The Yamaha EF4500iSE is a 4500-watt inverter generator designed for maximum efficiency and minimal noise, suitable for emergency backup, recreational use, and DIY projects. | The Aceup Energy AI4000s is a 3200-watt rated generator that operates on fuel and features inverter technology, making it suitable for various power needs. |