Amazon.com: BILT HARD Generator 2500 Watt, Quiet Inverter Generator Portable 80cc 4 Stroke Engine, 120V AC Duplex Receptacle and 12V DC Output, Outdoor Generators for Home Backup Use and RV Ready :
Source 12V DC Portable Petrol Generator 12 Volt 950 small dc gasoline generator on m.alibaba.com
DC Generators – Polar Power
Amazon.com: SereneLife Portable Generator, 155Wh Power Station, Quiet Gas Free Power Inverter, CPAP Battery Pack, Charged by Solar Panel/Wall Outlet/Car with 110V AC Outlet,3 DC 12V,3 USB Port : Everything Else
Source Chinese Wholesale Charge battery gasoline LPG GAS 12V 24v 48v 72V DC generator on m.alibaba.com
4375 Watt Gas Powered Portable Generator with CO SECURE Technology, CARB
Yanmar Portable Diesel Generator - YDG5500W-6EI, 5500 Watt, 9.1 HP, 120-240 Volt, Tier IV Final
Champion Power Equipment 4500-Watt Remote Start Gasoline Powered Open Frame Inverter Generator with CO Shield 201054 - The Home Depot
V2 AutoGen - 12V DC Generator 120amp - 12v DC Generator For Sale - DC GENERATORS