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 GXS2301i
- Generac #8251 GP2500i
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 GXS2301i | Generac #8251 GP2500i |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | No | No |
| Running watts | 1800 W | Winner: Winner: 2200 W |
| Starting watts | 2300 W | Winner: Winner: 2500 W |
| Noise (lower limit) | Winner: Winner: 62 dB | 0 dB |
| Weight | Winner: Winner: 37.4 lbs | 48 lbs |
| Run time @50% load | Not available | Winner: Winner: 4.5 h |
| Run time @25% load | 9 h | 8 h |
| Fuel tank | 0.9 gal | 1 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 19.9 x 10.7 x 17.4 | 19.7 x 11.4 x 17.9 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 5 | 12 |
| GFCI outlets | No | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | 3 % | Not available |
| Engine | ||
| Engine | 80 cc Senci OHV 4-stroke | 98 cc OHV 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 | 1800 W | 2200 W |
| Starting watts | 2300 W | 2500 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 | Not available | 4.5 h |
| Run time @25% load | 9 h | 8 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | EPA, ANSI/PGMA G300-2023 | EPA, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | Not available |
| UPC | 850016881595 | 696471003946 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 1800 | 2200 |
| Starting Watts (Gasoline) | 2300 | 2500 |
| Runtime @ 50% Load (Gasoline) | Not available | 4.5 |
| Runtime @ 25% Load (Gasoline) | 9 | 8 |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R) | 1x Duplex 120V 20A (5-20R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | 98 cc OHV 4-stroke |
| Engine Displacement | 80 | 98 |
| Engine Oil Type | Not available | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 9 | 8 |
| Runtime @ 50% Load (Gasoline) | Not available | 4.5 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | No | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Not available | Recoil |
| Included Accessories | Oil, funnel, and tool kit | Oil, funnel, tool kit, and battery charging cables |
| Warranty & identification | ||
| Commercial Warranty | 3 | 3 |
| Part Number | Not available | 82512 |
| Additional specs | ||
| Summary | The A-iPower GXS2301i is an 1800-watt gasoline inverter generator built for users who need portable power without sacrificing outlet variety. At 1800 running watts, it handles small appliances, power tools, and sensitive electronics like laptops and phones simultaneously. The 2300-watt peak gives it enough headroom to start larger devices like air compressors or small air conditioning units. This wattage class sits between emergency backup and job-site power, making it practical for camping, tailgating, outdoor events, and temporary outages where you need multiple device types powered at once.
Weighing just 37.4 pounds with a footprint of 19.9 x 10.7 x 17.4 inches, the GXS2301i moves easily into a car trunk or garage corner. The 0.9-gallon fuel tank runs for 9 hours at 25 percent load, meaning a full tank gets you through a camping weekend or workday without refueling. Because this unit includes both USB ports and standard household outlets, users avoid the need for multiple adapters or power strips. | The Generac GP2500i is a 2200-watt inverter generator built for portable backup power and recreational use. At 48 pounds, it moves easily between campsites, job sites, and emergency situations. The inverter technology means laptops, phones, and sensitive tools run safely because the power output stays stable. This unit runs on gasoline and delivers 2500 starting watts, so it can handle the initial surge when motors kick on. |
- Most PowerfulGenerac #8251 GP2500i2200W running
- QuietestA-iPower GXS2301i62 dB
- Longest RuntimeGenerac #8251 GP2500i4.5h at 50% load
Where to buy
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A-iPower GXS2301i
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Generac #8251 GP2500i
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