Remember this is phase 1. I minimized the battery connections and added components for battery voltage and current monitoring. This is largely "temporary" as the next phase will move the AC and DC distribution panels to a new location. That big thing to the left of the buss bar unit is a shunt to measure the current in and out of the battery. The connection from the shunt goes to a Blue Sea Systems digital multimeter that will alarm for high and low voltage limits. The meter displays battery voltage and +/-amperage. (discharging or charging)