I have fitted a battery to my BatteryPlus35, but it’s not detected by my BMPRO battery monitor. What do I do?

Check the following:

1. The battery connections are tight and not loose or corroded.
2. The battery polarity is correct: red lead is positive, black lead is negative.
3. The dealership fitted in-line fuse with the caravan battery is fitted and not blown. The correct value is 40A.