I've been looking around and I thought my situation would be fairly straight forward but I'm guessing not having found very little. I'm in the process of building a completely off-grid system with (2) EG4 6500W inverters a 120/240 split phase setup connected to a 48V battery bank. I have a portable pure sine wave inverter generator that I wanted to connect to the AC Input of both inverters to charge the battery bank when it reaches a certain voltage and then turn off when it reaches a certain level. My generator has an ATS port and it can AutoStart, auto-choke and auto shut-off. Is there an All-In-One unit I can plug and play that will monitor the battery bank voltage (48V System) to turn on and off my generator connecting to its ATS port? I don't need it to monitor anything else beside the battery bank voltage levels. I want it to be completely automated. If there's an easier/better solution I'm all for it. Thank you.