I want to put Lithium batteries in our camping trailer. I have a Victron 100/20 Smart Solar charger installed that works with solar panels.
It currently has deep cycle lead batteries that are charged via a 20A Hercules charger that gives a battery float charger float Voltage of 13.7 V (but not suitable for Lithium battery charging).
Question: Can I use this 13.7 V as feed for the existing Victron Smart solar charger, to charge the new lithium batteries in the caravan?
Or can I use a separate Orion-Tr Smart DC-DC Charger (https://www.victronenergy.com/dc-dc-converters/orion-tr-smart)?
This Orion-Tr Smart DC-DC Charger will at least charge the Lithium batteries from car DC feed, while driving.
You kind advice will be much appreciated!