That nugget above had made the rounds more than once: OIVEY not again....
I Run a Big Lead Bank (what I started with) and a Big LFP Bank.
Solar Charge Controller & Inverter/Charger have TWO Charging Profiles, one for FLA & one for LFP, as the charging profiles are different and Lead does need regular Equalizing etc which does not apply to LFP ever.
I use one of these BlueSea 9001E switches between my banks
350 Amps continuous rating for inboard gasoline or diesel engines.
www.bluesea.com
While you can do 12V,24V etc with both chemistries the Voltage Curves are different, Close but NOT identical as LFP has a very long flat curve while Lead does not. Side X Side they will be fighting each other and as the lead drops, the LFP will try to back feed it wasting a very significant amount of juice in the process. The way the batteries take the charge is also very different as LFP is 99% Efficient where lead is 85% at best (when healthy).
There has been MUCH FUD but mostly a lot of Misunderstanding when it comes to the chemistries, sadly even old Wives Tales get dragged into it.
BEWARE ! Many Terms used like DOD vs SOC etc have Chemistry Specific Contexts and NOT ALL ARE INTERCHANGEABLE as such. This gets EVERYONE coming from Lead with a History of using it.
This is a great source of miscommunication and confusion. IE, Peukerts Laws are irrelevant to Lithium Batteries.
Hope it helps, Good Luck.
Look at the 1st Link in my signature to see "About my System" with diagrams, pics & links for products used.
Steve