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.
- A-iPower SC2500i
- Generac #7153 GP3300i
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 | A-iPower SC2500i | Generac #7153 GP3300i |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | No | No |
| Running watts | 2000 W | Winner: Winner: 2500 W |
| Starting watts | 2500 W | Winner: Winner: 3300 W |
| Noise (lower limit) | Winner: Winner: 52 dB | 0 dB |
| Weight | Winner: Winner: 49.9 lbs | 59.5 lbs |
| Run time @50% load | Winner: Winner: 6.5 h | 4.5 h |
| Run time @25% load | 9 h | 7 h |
| Fuel tank | 1.1 gal | 1.06 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 21.7 x 14 x 20.9 | 22.2 x 13.3 x 18.4 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 12 | 5 |
| GFCI outlets | No | No |
| Covered outlets | Yes | No |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | <3% % |
| Engine | ||
| Engine | 80 cc Yamaha OHV 4-stroke | Generac OHV 149 cc 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 2000 W | 2500 W |
| Starting watts | 2500 W | 3300 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 | 6.5 h | 4.5 h |
| Run time @25% load | 9 h | 7 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA, ANSI/PGMA G300-2023 | EPA, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Not available | Not available |
| UPC | 850016881755 | 696471104011 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 2000 | 2500 |
| Starting Watts (Gasoline) | 2500 | 3300 |
| Runtime @ 50% Load (Gasoline) | 6.5 | 4.5 |
| Runtime @ 25% Load (Gasoline) | 9 | 7 |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R) 1x 120V 30A (L5-30R) | 1x Duplex 120V 20A (5-20R) 1x 120V 30A (L5-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | Yamaha OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 80 | 149 |
| Engine Oil Type | Not available | 10W-30 / SAE 30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 9 | 7 |
| Runtime @ 50% Load (Gasoline) | 6.5 | 4.5 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Not available |
| Low Oil Protection | No | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Not available | Recoil |
| Included Accessories | Oil, funnel, tool kit, RV adapter, battery charging cables, and parallel cables | Not available |
| Warranty & identification | ||
| Commercial Warranty | 3 | Not available |
| Part Number | Not available | 71533 |
| Additional specs | ||
| Summary | The A-iPower SC2500i is a 2000-watt inverter generator built around a Yamaha 80cc OHV 4-stroke engine. This wattage class handles essential household appliances, small power tools, and recreational equipment simultaneously. Think refrigerator plus microwave plus laptop charging at the same time. The 2500-watt peak rating gives it headroom to start high-inrush devices like air compressors or small air conditioning units without stalling. At 49.9 pounds, this unit sits at the grab-and-go threshold where one person can carry it to a campsite, tailgate, or storage shelf without strain.
Inverter technology means the output is electronically regulated to stay within 3% voltage variance. This protection matters for laptops, phones, and televisions that can suffer permanent damage from dirty power. The SC2500i runs on standard gasoline, which is available everywhere and costs less per hour than propane alternatives. With a 1.1-gallon tank, the refueling cycle is predictable. At half load you get 6.5 hours before the pump runs dry. At quarter load, 9 hours. For weekend camping or a single-day job site, this eliminates the mid-use refueling hassle. | The Generac GP3300i is a 2,500-watt inverter generator built for users who need portable, clean power without the weight penalty. At 59.5 lbs, it moves easily between campsites, tailgates, and home backup scenarios. The 3,300-watt starting capacity handles motor-driven equipment, while sub-3% THD protects laptops and phones from voltage spikes. |
- Most PowerfulGenerac #7153 GP3300i2500W running
- QuietestA-iPower SC2500i52 dB
- Longest RuntimeA-iPower SC2500i6.5h at 50% load
Where to buy
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A-iPower SC2500i
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Generac #7153 GP3300i
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