I have 4 lithium weize batteries in series to make 2 24 volt batteries. I live in Michigan so I have them in an old fishing cooler that I insulated and placed one rv heater. Rover solar controllers 40 amp. Transfer switch. I current am hooked to the house and run a full size refrigerator and full size freezer 24/7. Have a load center in the shed and load center in the house. I have a 1500 watt ground array made up of Renogy and Hqst 100 watt solar panels. Looking for suggestions to improve or upgrade my system. Tried to follow Will Prowse 24 volt system to charge a Tesla . Don’t know whether to get more solar panels or more batteries. Although you can always need more of them. I also thought about getting an all in one 48 volt system but I have built this from a 12 volt system and like to use what I already own.