The Victron Battery Protect is a uni-directional device.
It can only deal with the current in one direction, so either current to a load, or current from a charger, but not both currents at the same time.
In addition to this, current only can only flow from the Battery terminal to the load terminal. In case of use with a load, the battery connects to the Battery terminal, and in case of use with a charger, the charger connects to the Battery terminal.