Compare Generators Side-by-Side

Generator

Generator

5000 W

202 lbs

20 h

120/240

120/240

223 cc OHV 4-stroke, cast iron sleeve

420 cc OHV 4-stroke

Recoil

Recoil, Electric

3 years

2 years

5000 W

8125 W

20 h

3600 W

Digital Data Center

CARB, EPA, ANSI/PGMA G300-2023

CARB, EPA

850016881311

815683020067

4000

6500

5000

8125

4000

5000

12

11

60

60

OHV 4-stroke, cast iron sleeve

OHV 4-stroke

cast iron sleeve

20

Low oil and overload protection

Low oil and overload protection

Folding handle and wheels

Oil, funnel, tool kit, propane hose, RV adapter, and wheel kit

Oil, funnel, tool kit, battery, and wheel kit

3

The A-iPower GXS5000D is a 4,000-watt dual-fuel portable generator built around a 223cc OHV 4-stroke engine with cast iron sleeves. On gasoline, it delivers 5,000 starting watts and 4,000 running watts. On propane, output drops to 4,500 starting watts and 3,600 running watts. This power level handles mid-range job site demands: circular saws, air compressors, multiple power tools running simultaneously, or a household refrigerator plus several circuits during an outage. The dual-fuel design means users can switch between gasoline and propane based on availability, storage preference, or runtime needs. Compliance with CARB and EPA standards confirms emissions control without sacrificing performance. The 6.3-gallon fuel tank stretches runtime significantly at light loads. On gasoline at 25 percent load, users get 20 hours of operation before refueling. This extended runtime makes the GXS5000D practical for all-day job sites or overnight emergency backup without constant attention. Propane runtime at the same load reaches 11 hours, a meaningful difference for users who prioritize fuel storage or longer shelf life.

The Cat RP6500 E is a 6500-watt gasoline generator built for residential backup and light commercial work. Its 8125-watt peak capacity means it can start large tools and appliances that draw high inrush current, then sustain 6500 watts of continuous power for multiple devices simultaneously. A 7.9-gallon fuel tank delivers 12 hours of runtime at 50% load, which translates to roughly one full workday or overnight backup without refueling. The gasoline engine is straightforward to maintain and refuel anywhere, making this unit practical for job sites, outdoor events, and emergency home power.