Compare Generators Side-by-Side
Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.
- Pulsar PG4000BiSRCO
- Ryobi RY904500
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 | Pulsar PG4000BiSRCO | Ryobi RY904500 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Dual-Fuel | Gasoline |
| Inverter | Yes | No |
| Parallel capable | Yes | No |
| RV ready | Yes | Yes |
| Running watts | 3200 W | Winner: Winner: 3600 W |
| Starting watts | 4000 W | Winner: Winner: 4500 W |
| Noise (lower limit) | Winner: Winner: 65 dB | 82 dB |
| Weight | Winner: Winner: 54 lbs | 115 lbs |
| Run time @50% load | 6 h | Winner: Winner: 10 h |
| Run time @25% load | Not available | Not available |
| Fuel tank | 1.6 gal | 4 gal |
| Fuel gauge | No | No |
| Approx. dimensions (L × W × H) | 21 x 11 x 19.5 | 24 x 26 x 20 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 12 | Not available |
| GFCI outlets | No | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | ≤3% % | Not available |
| Engine | ||
| Engine | 141 cc OHV 4-stroke. | 212 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric, Remote | Recoil |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3200 W | 3600 W |
| Starting watts | 4000 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 | 6 h | 10 h |
| Run time @25% load | Not available | Not available |
| Propane | Not available | Not available |
| Running watts | 2800 W | Not available |
| Starting watts | 3600 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 | 13.2 h | Not available |
| Run time @25% load | Not available | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | false |
| Compliance | EPA, ANSI/PGMA G300-2023 | EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating. | Not available |
| UPC | 814726028138 | 46396056023 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3200 | 3600 |
| Running Watts (Propane) | 2800 | Not available |
| Starting Watts (Gasoline) | 4000 | 4500 |
| Starting Watts (Propane) | 3600 | Not available |
| Runtime @ 50% Load (Gasoline) | 6 | 10 |
| Runtime @ 50% Load (Propane) | 13.2 | Not available |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R) | 2x Duplex 120V 20A (5-20R) 1x 120V 30A (TT-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke. | OHV 4-stroke |
| Engine Displacement | 141 | 212 |
| Engine Oil Type | 10W-30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 50% Load (Gasoline) | 6 | 10 |
| Runtime @ 50% Load (Propane) | 13.2 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection, CO monitoring | Low oil and overload protection |
| Low Oil Protection | Yes | No |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Recoil, Electric, Remote | Not available |
| Included Accessories | Oil, tool kit, key fob, propane hose, and battery | Oil and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | 3 | Not available |
| Additional specs | ||
| Summary | The Pulsar PG4000BiSRCO is a versatile dual fuel inverter generator designed for both gasoline and propane use, delivering up to 4000 peak watts and 3200 running watts. It features remote and electric start options, is RV-ready, and includes CO Sentry technology for safety. | The Ryobi RY904500 is a 3600-watt portable gasoline generator, delivering 4500 starting watts. It features a 212cc OHV engine, a 4-gallon fuel tank providing up to 10 hours of runtime at 50% load, and is RV-ready with a 120V 30A RV outlet. |
- Most PowerfulRyobi RY9045003600W running
- QuietestPulsar PG4000BiSRCO65 dB
- Longest RuntimeRyobi RY90450010h at 50% load
Where to buy
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Pulsar PG4000BiSRCO
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Ryobi RY904500
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