Check the listing for details. NorthStar Quiet Armor Commercial-Grade Portable Generator, Honda GX390 OHV. Condition: New. Listed at 1099.99 USD. The NorthStar c8000s Commercial-Grade Portable Generator is the ultimate, high-powered, high-performance power solution for demanding jobsites. Powered by a Honda GX390 OHV engine, this ruggedly constructed generator is built for extreme durability and safety. A heavy-duty steel exoskeleton and premium components provide the reliability tough jobs require. Quiet Armor Technology delivers up to 20% less noise as measured (in dBA) against leading commercial-grade portable generators*. It comes with a built-in battery charger/maintainer for easy charging of onboard electric start battery. Carbon monoxide detection and automatic shutdown ensure safe operation. A cutting-edge multifunction LCD display allows for monitoring all generator functions in one convenient.