Is off grid solar setup limited by battery charging current?
Supplementary:
With lead acid, for more than terrible cycle life, depth of discharge should be limited.
For really long life even with deep discharge rated cells a DOD (depth of discharge) of only 30% may be used (30 Ah available per 100 AH of capacity). More than 50% DOD is getting marginal and beyond say 70% DOD is very hard on LA cells.
LiFePO4 cells are usually rated at charge currents of C/2 or C and may be at several C (5C 10C not unknown) - this varies with manufacturer and should be readily available in data sheets. If the information is not readily available the product is suspect.
LiFePO4 almost always have far longer cycle life than LA under the same conditions. LiFePO4 is often quoted at around 2000 cycles under deep discharge use BUT this varies with manufacturer and I have seen substantially varying claims for the same cells from different suppliers.
While LiFePO4 is often said to be OK at 100% DOD I have seen warranties which require &lt;= 70% DOD and say that at 80% DOD supplier remedial action is needed (!).
Overall LiFePO4 (compared to LA) provide lower whole of life cost per total Wh supplied.