Question about LTC4013 and LTC4000

What is main difference between LTC4013 and LTC4000? (Both are same 60V Buck Charger . I think other specs are also similar)

LTC4013 is mainly made for Lead-acid batteries? and LTC4000 is for Li-Ion?

But in the datesheet LTC4013 also supports Li-Ion and other multi chemistry batteries.

I want to know difference between LTC4013 and LTC 4000? and what would you recommend if I use Li-Ion or LiFepo4 batteries not Lead acid.

(I am going to use 48V battery pack.)