I’ve upgraded the battery system with the addition of 4x FullRiver 6v 225AH AGM batteries. I also added a 2000w PSW Inverter and connected it via the auto-transfer switch.
In the basement area I added LED lighting strips and connected them into the existing basement lights so as to re-use the switch.
Using a microcontroller board and some breakouts I created a battery monitor system that measures current flow through a shunt. The data is presented in a Web browser. An iOS app is in work.