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Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.
- Genmax GM3500Xi
- Predator 72899
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
| Specification | Genmax GM3500Xi | Predator 72899 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | Yes |
| Parallel capable | Yes | No |
| RV ready | No | No |
| Running watts | Winner: Winner: 3200 W | 3000 W |
| Starting watts | Winner: Winner: 3500 W | Winner: Winner: 3500 W |
| Noise (lower limit) | 66 dB | Winner: Winner: 56 dB |
| Weight | Winner: Winner: 57.3 lbs | 102 lbs |
| Run time @50% load | Winner: Winner: 8.5 h | Not available |
| Run time @25% load | 13.5 h | 11 h |
| Fuel tank | 2.24 gal | Not available |
| Fuel gauge | No | No |
| Approx. dimensions (L × W × H) | 18.9 x 13.6 x 17.7 | 22.75 x 17.3 x 20 |
| Electrical | ||
| Voltage (AC) | 120V 60 Hz | 120V |
| Voltage (DC) | 5 | Not available |
| GFCI outlets | No | No |
| Covered outlets | Yes | No |
| Automatic Voltage Regulation | Yes | No |
| THD | ≤3% % | Not available |
| Engine | ||
| Engine | Dinking OHV 4-stroke | Not available |
| Alternator | Not available | Not available |
| Starting system | Recoil | Not available |
| Warranty | ||
| Warranty | 1 years | Not available |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3200 W | Not available |
| Starting watts | 3500 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 | 8.5 h | Not available |
| Run time @25% load | Not available | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | Not available |
| Compliance | EPA, ANSI/PGMA G300-2023 | Not available |
| Security | Not available | Not available |
| Spark arrestor | Yes | No |
| Neutral | Not available | Not available |
| UPC | 713424639045 | Not available |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3200 | Not available |
| Starting Watts (Gasoline) | 3500 | Not available |
| Runtime @ 50% Load (Gasoline) | 8.5 | Not available |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R) | Not available |
| Electrical & power | ||
| Frequency | 60 | Not available |
| Engine & construction | ||
| Engine Type | Dinking OHV 4-stroke | Not available |
| Engine Displacement | 145 | 212 |
| Engine Oil Type | SAE 10W/30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 50% Load (Gasoline) | 8.5 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection, CO monitoring | Not available |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | No |
| Included equipment | ||
| Included Accessories | Funnel and tool kit | Not available |
| Additional specs | ||
| Summary | The Genmax GM3500Xi is a 3,200-watt inverter generator built for homeowners, campers, and job site work. Its 3,500-watt peak output handles essential appliances and power tools, while the inverter technology keeps sensitive electronics safe. At 57.3 pounds, it moves easily between locations. | The Predator 72899 is a 3500 Watt Super Quiet Inverter Generator designed for efficient and quiet operation, suitable for various applications including RVs. |
- Most PowerfulGenmax GM3500Xi3200W running
- QuietestPredator 7289956 dB
- Longest RuntimeGenmax GM3500Xi8.5h at 50% load
Where to buy
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Genmax GM3500Xi
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Predator 72899
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