Ahhh thanks for the many replies fellas!
I did not consider the tow vehilcle charge conn.
Bought new deep cycle battery and solar charger along with solar controller. This camper is used and parked at the hunting lease year 'round. We do not visit there during the summer but once every two months or so. We have shore power there but shut it off during absences to keep power bill down.
The trailer has an emergency separation cable connected to a box but the cable is broken. The trailer is not used for towing very much and once I get it back there and parked/setup I imagine it will stay there a long while.
I own a '05 KZ toy hauler that stays at the house in the event we go "camping" some where.
I towed the old girl home for some major upgrades. I replaced the roof a/c as it no longer worked. Re-applied the rubber coating paint over the metal roof due to thin spots showing thru. Replaced both vents due to cracking and leaking. Replaced the bath fan bc all the orig blades were missing. Rebuilt the missing bench from scratch bc wanted to restore orig design kitchen table/bed. The Orig owner tore it out and was using a chinchy fold out card table that was junk.
Pressure washed years of green mold and black gunk off the outside. Discovered a lions head design on the front shade that was so black you couldnt see it.
Repacking and checking the wheel bearings is next.