Buddy, Because you shop mppt controller, 100ah batteries (48v) and reliable 3000w inverter from Renogy, I found there is a good video on Renogy to solve the overload worry about the batteries that you have:
https://www.renogy.com/learning-center/troubleshooting_maintenance/troubleshooting-video...
Hey Buddy, I saw you got 4 Renogy lithium 100ah, is it a agm battery? I am also a newbie for this,the first time to choose this type of battery, is it to choose agm or GEL battery? Then what's the difference?:)