Asking the right question about generator&battery charger

OK thanks folks...

I'll gather all the info that people have posted so that I can post a question that makes enough since to get a answer.

I do know that my converter is at end of TT, along with elec cord and batteries are at other end mounted on tongue.

I keep and run my generator next to the tongue (rear of pick up) when using it. So that distance alone is 30 feet.

Heading out today to do some shopping for RV stuff today for couple little things and will see what they want to generators.

Thanks again