BQ40Z60: SOC & SOH & Coulomb Counting

Part Number:BQ40Z60

hello ,

one of my customer is considering BQ40Z60 . 

can you help me or direct me on how to derive  :

1. Algorithm SOC & SOH.
2.  Coulomb Counting Merits & De-Merits.
3. Bq40Z60 How to read SOC and SOH 

Thanks 

Mandar