Switching Charging 12 and 24 volt batteries either/on

DIY
, , , ,
1

I found a few topic to similar themes, but no one fits to my setup..

My RV is using a 24 Volt battery system, powered by a 24V alternator, in the living space i use a 12V system
The connection between the 2 systems is a Orion-Tr Smart 24/12-20A DCDC Charger.
Additionally i use a SmartSolar MPPT 100/20 (connected to 2+15W 18V Panels (serial connected → 36V)
Backup is a Blue Smart IP65 Charger 12/15, but all this is only capable of loading the 12V System.

My question is now what happens if it is necessary to charge my 24 V System?
My idea is to add a switch (Zero position) into the Solar Charger battery line.
So it would be possible (in case of I need it needed) to switch of the 12V battery from the unit and switch on the 24V battery.
I know it is manual and it only allow to load either/or but for the worst case it should work.
At the campsite I normally have 230V, so there is no actual need for the Solar array…

My question is only the configuration… there is no “auto setting for battery voltage” in the app.
is it really necessary to switch the voltage also manually or the MPPT will change correctly because of the connected battery voltage.

2

The controller is programmed by its search mode when it is connected for the first time. You can reprogram the voltage afterwards, but you should still check it.

The manual explains how to reactivate the search mode (for shipping a preprogrammed controller to remote construction sites or for servicing).

3

If you are manually switching, then you are manually reprogramming and you can save two battery profiles on the victron connect app to make it easier to do so

4

Thanks for the Input, i will try it out