Engine Type: 4-stroke, overhead valve (OHV), air-cooled gasoline engine. Small units use around 80cc engines, while large units use up to 460cc engines.Starting System: Standard manual recoil pull-start, though larger models (above 4,000W) often include an electric key start or push-button start.Fuel Tank Capacity: Holds anywhere from 4 liters to 30 liters of petrol.Runtime: Most modern models are designed to run for 8 to 13 hours at 50% load before needing a refill.3. Generator Types & Extra FeaturesStandard Portable Generators: Best for heavy power tools and basic home appliances. They are built inside an open steel roll cage and cost less, but they are loud (around 70 to 75 dB).Inverter Generators: Best for sensitive electronics like smartphones, laptops, and TVs. They produce "clean" power, run very quietly (around 50 to 60 dB),