Lithium battery upgrade.

Originally Posted by Rick Scorey

I know a lot has been written on topic of lithium battery upgrades. I am looking for specifics if anyone has them. I’m trying to keep this as simple as possible.

I have a 2023 25’ Globetrotter with the factory 300 watt solar panels. I plan to upgrade to 2 – 100AH lithium batteries, brand yet to be determined. I want to keep the batteries in the current front mounted battery box and everything as generic as possible. I am doing this mainly to extend the 12 volt refrigerator run time.

I am planning to use the current converter and solar charger system making only configuration changes to the solar system (I understand the converter will auto detect the lithium batteries). I want to add a Victron shunt and a Victron DC to DC charger.

My questions are as follows:
1) Can anyone provide the model numbers for the Shunt and DC to DC charger?
2) For the install of the Shunt, it looks like I need to do some re-wiring in the box. Currently, the left side of the trailer goes to the left positive terminal on the battery and the right side of the trailer goes to the right terminal on the battery. The grounds on the opposite corresponding negative terminals. I assume I have to put both sides together to the new shunt for the positive. Is this correct?
3) What is the best way to hook up the DC to DC charger? Where does the center lug of the 7 pin trailer to car connection terminate in the camper?
4) Will the modification fit inside the current battery box or do I need smaller batteries?

Thanks in advance,

Rick