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| Specification | Yamaha EF5500DE | Aceup Energy AI4500 |
|---|---|---|
| General | ||
| Product type | Generator | Not available |
| Fuel | Gasoline | Not available |
| Inverter | No | Yes |
| Parallel capable | No | Yes |
| RV ready | No | No |
| Running watts | Winner: Winner: 4500 W | 3600 W |
| Starting watts | Winner: Winner: 5500 W | 4500 W |
| Noise (lower limit) | Winner: Winner: 74.1 dB | Not available |
| Weight | 238.1 lbs | Winner: Winner: 62.7 lbs |
| Run time @50% load | Winner: Winner: 13.5 h | Not available |
| Run time @25% load | Not available | 10 h |
| Fuel tank | 6.9 gal | 2.65 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 29.1 x 29 x 31.5 in | Not available |
| Electrical | ||
| Voltage (AC) | 120/240V 60 Hz | 120V |
| Voltage (DC) | Not available | 12V |
| GFCI outlets | Yes | No |
| Covered outlets | No | No |
| Automatic Voltage Regulation | Yes | No |
| THD | Not available | Not available |
| Engine | ||
| Engine | Yamaha MZ360 OHV 4-stroke | 223cc 4-stroke OHV engine |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Not available |
| Warranty | ||
| Warranty | 3 years | 2 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 4500 W | 3600 W |
| Starting watts | 5500 W | 4500 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 | 13.5 h | Not available |
| Run time @25% load | Not available | 10 h |
| 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 | true | Not available |
| UPC | 765053823098 | Not available |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 4500 | 3600 |
| Starting Watts (Gasoline) | 5500 | 4500 |
| Runtime @ 50% Load (Gasoline) | 13.5 | Not available |
| Runtime @ 25% Load (Gasoline) | Not available | 10 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) 1x 120V 30A (L5-30R)1x 120/240V 30A (L14-30R) | Two 20A outlets and one 30A Twist-Lock |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | 4-stroke OHV |
| Engine Displacement | 358 | 223 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | Not available | 10 |
| Runtime @ 50% Load (Gasoline) | 13.5 | Not available |
| Controls & display | ||
| Display Type | Data center | Intelligent gauge |
| Idle Control System | Not available | Economic mode to save fuel |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Not available |
| Low Oil Protection | Yes | No |
| Carbon Monoxide Monitoring | Yes | No |
| Included equipment | ||
| Starting Components | Not available | 5-in-1 knob: fuel on/shut-off, engine on/off, choke |
| Documentation | Data center | Not available |
| Included Accessories | Tool kit, battery, and wheel kit | Not available |
| Warranty & identification | ||
| Residential Warranty | Not available | 2 |
| Commercial Warranty | Not available | 2 |
| Part Number | EF55DEX | AI4500 |
| Additional specs | ||
| Summary | The Yamaha EF5500DE is a versatile dual 120/240 volt generator, ideal for emergency backup power for home, cottage, or business, as well as primary power on job sites. It features a 358cc OHV engine, electric start, and offers 5500 watts maximum AC output with outstanding fuel efficiency. | The Aceup Energy AI4500 is a 3,600-watt inverter generator built around a 223cc 4-stroke OHV engine. It produces 3,600 running watts and 4,500 peak watts, making it suitable for home backup of essentials, jobsite tools with moderate surge needs, and applications where clean power matters. As an inverter model, it delivers stable electricity to sensitive electronics like laptops, chargers, and networking gear while handling traditional household loads and motor starts. The 2.65-gallon fuel tank and 10-hour runtime at 25 percent load support overnight run windows for light to moderate demand. Parallel capability lets users connect two units later to increase total output without replacing the generator entirely. |