I have 2 solar panels on my fifth wheel. It came with lead acid batteries. I am considering replacing them with lithium. I store the RV in a shed with no heat or electricity. I can easily remove the batteries in the fall and store them in our heated basement. We usually go south in February and can have temps zero or below when traveling. The rv would be plugged into the pickup, solar or shore power when traveling. Would the cold temperatures harm the batteries in frigid weather if they were constantly powered by solar, 12 volt ot 110 volt AC ? Thanks