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| Specification | Firman W03661OF | Aceup Energy AI4500W |
|---|---|---|
| General | ||
| Product type | Generator | Not available |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | Yes | Yes |
| Running watts | Winner: Winner: 3650 W | 3600 W |
| Starting watts | Winner: Winner: 4500 W | Winner: Winner: 4500 W |
| Noise (lower limit) | Winner: Winner: 69 dB | Not available |
| Weight | Winner: Winner: 106 lbs | Not available |
| Run time @50% load | Not available | Not available |
| Run time @25% load | Winner: Winner: 25 h | 10 h |
| Fuel tank | 6 gal | 2.65 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 24.5 x 24.1 x 23 | Not available |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 12 | 12 |
| GFCI outlets | No | No |
| Covered outlets | Yes | No |
| Automatic Voltage Regulation | Yes | No |
| THD | 3 % | Not available |
| Engine | ||
| Engine | 208 cc OHV 4-stroke, cast iron sleeve. | 223cc 4-stroke OHV engine |
| Alternator | Not available | Not available |
| Starting system | Recoil | Not available |
| Warranty | ||
| Warranty | 3 years | 2 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3650 W | Not available |
| Starting watts | 4500 W | Not available |
| 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 | 25 h | 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 | Floating | Not available |
| UPC | 840876136614 | Not available |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3650 | Not available |
| Starting Watts (Gasoline) | 4500 | Not available |
| Runtime @ 25% Load (Gasoline) | 25 | 10 |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120V 50A (14-50R) | Two 120V AC 20A outlets and one 30A RV outlet |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | Not available |
| Engine Displacement | 208 | 223 |
| Cylinder Sleeve | Cast iron sleeve | Not available |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 25 | 10 |
| Controls & display | ||
| 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 | ||
| Included Accessories | Oil, funnel, tool kit, RV adapter, battery charging cables, and wheel kit | Car charger adapter (two 5V USB ports) |
| Warranty & identification | ||
| Residential Warranty | Not available | 2 |
| Commercial Warranty | 3 | Not available |
| Part Number | Not available | AI4500W |
| Additional specs | ||
| Summary | The Firman W03661OF is a 3650-watt inverter generator built around a 208cc OHV 4-stroke engine. This wattage class powers most household circuits simultaneously, including refrigerators, microwaves, and power tools, making it suitable for home backup and job site work. The gasoline fuel type and 6-gallon tank give users a familiar refueling experience without special infrastructure. Because this unit runs on standard fuel, users can source power anywhere gasoline is sold, a major advantage over propane or dual-fuel models. The inverter technology produces clean power at 3 percent THD, which means laptops, phones, and sensitive electronics charge safely without risk of voltage spikes. | The Aceup Energy AI4500W is a gasoline-powered inverter generator with a rated wattage of 3600 and a peak wattage of 4500. It features recoil start and EPA compliance. |