question

OK, Victron has got the issue figured out. They have been very responsive and I greatly appreciate everyone's feedback. Hopefully this info will help others down the road.

Turns out that if I'm going to run the charger in power supply mode AND have it connected to the VE.Smart network, then the batteries must be connected to the system. Even though it's in power supply mode, it's looking for the battery voltage on the system, if the batteries are not connected it can't sense the battery voltage and starts running away.

I tested this theory, with the batteries disconnected and the power supply output set to 13.20V, the output would immediately start climbing to around 15.20V.

With the batteries connected to the system and sitting at 13.20V (70% SOC - where I typically keep them) and the power supply output set to 13.20V everything is stable and happy.

Most of our camping involves being connected to shore power. If we're going on a dry camping trip, I charge the batteries to 100% SOC prior to leaving the house.

So my two choices are either:

1. Remove the charger from the network, keep the batteries turned off while on shore power and run the power supply output wherever I choose, although 13.20V is actually a good voltage to supply the trailer.

2. Leave the charger connected to the network, leave the batteries connected and sitting at 13.20V (70% SOC), keep the charger in power supply mode with the output set to 13.20V.

I'm not sure which approach is the best, one one hand, my BattleBorn batteries have internal BMS which monitor high/low voltage and high/low temperature, so Volt Sense and Temperature Sense aren't really needed from the network to operate safely. But on the other hand, since I like keeping my LiFePO4 batteries resting at around 70% SOC and 13.20V is a good voltage to supply the trailer with, I don't see what harm it would cause just leaving the batteries connected to the system and the charger supply 13.20V to the trailing while remaining on the network.