Maintenance is in my mind more than the theft portion. But if I need a battery I will integrate one into the system. If I buy a 12V lithium 100ah battery I would assume it would store enough power to run the system for a portion of the night before my disconnect shuts it down at whatever voltage reading I set it at, Would that be right? What voltage is safe to disconnect it at and keep the longevity of the battery? And would I need to buy a solar controller or will the components I have work with a battery as well.

I haven't done a ton of research on a battery system.