I have a 2017 sunseeker by forest river class C rv. I just bought 2 100mah renogy lithium iron phospate batteries to replace my flooded lead acid. I've been doing a lot of researching figuring out what I need to change. My stock inverter doesn't have a switch to flip for lithium batteries so I understand it will not charge these lithiums to their full capacity and I can be ok with that. I guess my bigger concern is charging from the alternator. I'm a little reluctant to hook the batteries up at this point so I measure right now about 13 volts coming from the converter and about 14.1 coming from the alternator. These lines are normally both connected to the battery so I was wondering if that's normal that both the house inverter and the alternator both have live connections to the battery at the same time. My bigger concern is that I've heard the alternator can be damaged without a dc to dc charger in between since having 200mah of lithium can draw too much current. So then do I just put this dc to dc charge in between the old alternator supply line and the battery since this will be supplying 14.6 to the battery while the house inverter is still pushing 13. Any help would be appreciated.