I realize I may have partially hijacked another related thread - my apologies.
Here is a 'white paper' evaluation of LiFePO4 battery technology and the issues that surround converting from other battery types or adding the new batteries to existing systems. It is written by a member of the AYBC group that is developing the TE-13 (soon to be E-13) standard.
Mods I suggest making this a Sticky post as it will be relevant for a long time.
A long read but the most comprehensive analysis I've found of LiFePO4 issues as they relate to boating.
https://marinehowto.com/drop-in-life...3FUWr4PCfn5L9M