The state of charge calculation in a BMPRO power management systems uses a learning algorithm to provide accurate data. It can take 3 charge and discharge cycles after either the initial installation or after a reset of the power management system for correct information to be available.
If the PXShunt500 is not transmitting data properly, causing the state of charge to be incorrect, ensure you have all loads being powered on through the XShunt500, and check if the LED status light on the PXGateway is flashing green every 5 seconds.