I am planning to upgrade the old Lead Acid batteries on my power boat this year. The current configuration looks like this;
My plan is to replace the starter battery with a dual-purpose AGM battery and replace the house batteries with a pair of LiFePO4 batteries. My understanding is that I will need to install a DC-DC charger between the starter & house batteries to adjust for the higher charging voltage for the Lithium batteries, but I wanted to confirm this. It seems like the DC-DC charger should be installed next to, or in place of the battery combiner (between the starter and house batteries), is this correct? Thanks for any guidance.