Please refer to the LTC4015 datasheet. The LTC4015 is very similar to LTC4015, but with a wider operating area, so more variation in capacitance needed. For that reason, more detailed equations are included in the LTC4015 datasheet compared to the LTC4162 datasheet.
I would like to ask if there is any LTC4162-S lead acid charge evaluation DEMO board, I applied to the official website of China, they said there is no DEMO board.
Looks like there are 2 in stock at Mouser at the moment: