The majority of regulators have particular charging profiles for various kinds of automotive batteries that are used these days commonly.
Connecting a solar panel to a caravan battery.
This is why you can t connect your solar panel directly to your battery.
To power a dual battery system you ll need to connect the panels in parallel.
Connecting two solar panels in parallel.
When the battery is full the charge controller will stop delivering energy to the battery.
If both panels are rated at the same maximum voltage then you ll get maximum output.
In the functional diagram below you will see the diode symbol in the line from the dc external input.
This process allows both regulators to detect the battery voltage type charge conditions etc without the pressure of applying the charge.
Reconnect both regulators to the battery on their own no solar panels connected.
The same thickness wire can connect the regulator to the first battery.
Charge your 12v battery from a solar panel and have your backup powered.
Always connect your solar panels via a regulator.
Connect the negatives to the negatives and positives to the positives.
The instructions that come with the solar regulator will identify the wire thickness required depending on your distances but rv applications normally use 6mm square uv stabillised wire connecting your solar panels to a solar regulator.
For using portable solar its more effective to connect directly to the caravan camper battery through a quality mppt solar charge controller.
The only efficient option for adding solar charging to yout battery in a jayco van is to connect it directly to the battery.
The charge controller also senses if the battery is full.
Have a anderson plug setup for this purpose.
Then connect the regulator to the 12 volt battery.
If you have a shunt for battery condition monitoring then connect the anderson through this to monitor the additional solar charge.
Wiring the battery to the charge controller.
Leave for 15 minutes.