AGM main battery to lithium accessory batteries?

[Tyler]

I have a Group 31 AGM battery powering my truck.

I have a regular 12v battery as the accessory battery in my camper. It is wired to my alternator as well.

But I have 2 lithium batteries that I want to replace the 12v accessory battery with. Can I just connect them and go? Or is this going to be a problem with the main battery being AGM?

I didn’t think there would be a problem until someone I know asked me what my plan is to go from AGM into lithium. And then I was like… uhhh

 

[Tyler]

To be clear, the camper’s system is connected to the main battery. In between the main battery and accessory batteries is all of the stuff you would expect for a solar powered camper:

Charging relay, bus bar, fuses, kill switch, solar controller, inverter, battery monitor, etc.

 

[Tyler]

@Mr. Nobody — I think you know a lot about this stuff? My mind + electrical = does not compute.

 

[StormRnr]

The lithium batteries mush have charge controllers built in or they wouldn't work with the standard systems.

 

[Tyler]

The lithium batteries mush have charge controllers built in or they wouldn't work with the standard systems.

I ordered their charge controllers when I ordered the batteries so I think I should be good then.

 

[Tyler]

This is pretty much what I have waiting to be installed.