hollhoek, welcome to our website and forum. A solar charger will keep the battery full but I would also recommend a battery disconnect to all other circuits to be sure they do not drain off any current during the storage. Good luck.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7