as was said, all RV's come with converters that also recharge the battery, along with converting 110v AC to 12v DC.
suggest you post any questions specific to your popup, in the Tent Camper/Popup section here at FRF. also do some reading there to gather some info on yours.
lots of helpful FR popup owners there.
Dan-Retired California Firefighter/EMT
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package