I have a Victron SmartSolar MPPT 100V 30 amp charge controller running at 12 volts hooked to two 4S LifePo4 battery banks wired in parallel. When I take the voltage at the point where the two LifePo4 batteries are tied together for the parallel connection, the voltage is 14.1. If I then take a voltage reading on the battery input connectors on the charge controller, it's shows 14.5. Any ideas why this is happening?