Running trailer from tow vehicle inverter

Thank you, all. The purpose of using an inverter would be to boost the rv battery when it becomes low when dry camping, by running the tv and plugging the trailer into the inverter. I do not have a generator. I will be using a 1500w pure sine inverter. The converter in the rv has a smart charging system(Progreessive dynamics)- I know this would not be efficient, but it could extend camp time. I do have 2- 50 watt solar panels that keep the batteries up on the sunny days.