Can I Change SOC% Calibration

Our SOC% Sensor includes a ShuntMon2 board and a Shunt.  The two parts are combined together to form the SOC% Sensor.  It is calibrated using standard stable references in a ten point calibration.  

When you initially setup the system you have to put in an initial guess as to the state of charge, when it top balances (bypass complete) or is full or empty it improves the initial estimate that you put in and gradually gets better. 

Have a look at Understanding the WatchMon - Hardware configuration - Shunt SoC% settings

In particular the Metrics dialog allows you to update the current guess or override and tell the system that the current point is full or empty.