I need owners manual for Ever start 750w 3.1a inverter/charger

No owners manual online but there are 2 videos and full specs.

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Turn your vehicle's battery into a backup power source with the EverStart 750W Slim Inverter. This handy mobile inverter easily attaches to your car's battery to provide ample power to electric tools, appliances, and more. The inverter features a compact design that can be easily stored in tight spaces when not in use. An excellent addition for any road safety kit, keep this inverter in your trunk to have on hand in case of emergencies. The inverter can also be used to power electronics on your next camping trip or tailgate party, anywhere your car takes you. Two universal USB ports make it easy to recharge Apple and Android-based mobile devices and accessories at the same time, while dual AC ports can be used to power or charge electronics at 750W with standard US plugs. An digital display indicates when the inverter is actively providing power to your devices. Recharge or power your devices on the go with the EverStart 750W Slim Inverter.

• Portable inverter converts your vehicle's battery into a backup power source for USB and AC-powered electronics
• Two universal USB ports work with iPhone, iPad, Samsung and other mobile devices and accessories
• Two AC ports power or charges small electronics such as a laptop, fan or light
• Multiple USB and AC ports make it easy to charge two devices at the same time
• Includes safety protection against overcharging, short-circuit and overheating
• Attached color-coded cables
• Replaceable fuses conveniently stored in end cap
• Digital display shows active power status
• USB ports share 3.1A power
• AC ports provide 750W output